Extra 40 Amps Charging into RV Battery Bank from Truck Alternator (Renogy 40A DC-DC Charger)

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UPDATE - Max Off-Grid Charging Amps Test (Solar + Generator + Alternator) - • Max Off-Grid Charging ...
Wireless On/Off Switch Install - www.loveyourrv...
Shop the Renogy Website Via the LYRV Affiliate Link - renogy.sjv.io/KedOJ9
Renogy 40A DC-DC Charger on Amazon - amzn.to/2I5WgJP
I test how much amperage I can pour into my 315AH Lion Energy lithium battery bank at if I combine my 30 amp solar controller with a 60 amp Intelipower charge converter and my new 40 amp Renogy DC-DC charger. The battery bank was at a 50% state of charge during the test and all chargers were set to 14.4V.
In this informal test, it came out to right around 100 amps with all charging at the same time and around 85 amps with the generator and DC-DC charger from the truck alternator combined. All and all not bad.
See the previous video where I tested out using a Bogart SC2030 solar charge controller as a DC-DC charger via a temporary cobbled together setup - www.loveyourrv...
Disclaimer: Working with electricity can be dangerous. The following is for entertainment purposes only and should not be taken as instructional. If you decide to do the same, then research and beware of the risks involved. I don’t advise it without advanced knowledge of electricity. I accept no liability. You have been warned! - Ray
My Amazon Parts/Tool List:
Renogy 40A DC-DC Charger - amzn.to/2I5WgJP
60 Amp Switchable Breaker - amzn.to/2I60std
50 Amp Switchable Breaker - amzn.to/2I7LQJS
Battery Terminal Fuse Holder - amzn.to/2TaGCmL (if not already on battery)
60 Amp Terminal Fuse - amzn.to/2uGMZ7T
4 GA Cable - amzn.to/399C7P2
20 FT 100% Copper Booster Cables - amzn.to/2uGYhZX
Anderson Type Connectors - amzn.to/2PCM2Vz
4 GA Lugs and Heat Shrink - amzn.to/2TadEDt
Hydraulic Crimper - amzn.to/2Ta7yTx
Bernzomatic Torch - amzn.to/2Idb3SR
Vamplier Electrician Scissors - amzn.to/2uD6b6q
Uni-T Clamp-on Amp Meter - amzn.to/2vrxwcf
Related Links:
Lion Energy Lithium Battery Review Videos - www.loveyourrv...
Making Custom Cables - www.loveyourrv...
My RV Mod Videos - www.loveyourrv...
Boondocking Videos - www.loveyourrv...
Bogart Trimetric WiFi Monitor Demo - www.loveyourrv...
VIAIR 12V Trolling Motor Plug Install - www.loveyourrv...
My Ram Truck Videos - www.loveyourrv...
Uni-T Clamp Meter - www.loveyourrv...
Visit the Love Your RV! Amazon Pages to shop a selection of my favorite RVing products, parts, and accessories
Amazon USA - www.amazon.com...
Amazon Canada - www.amazon.ca/...
LoveYourRV is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.com
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Опубликовано:

5 окт 2024

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Комментарии : 531

@LoveYourRV 2 года назад

*UPDATE* - Max Off-Grid Charging Amps Test (Solar + Generator + Alternator) - ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-Nt3CG5qeF5o.html Wireless On/Off Switch Install - www.loveyourrv.com/12-volt-wireless-switch-mod-for-my-40a-dc-dc-charger/ Shop the Renogy Website Via the LYRV Affiliate Link - renogy.sjv.io/KedOJ9 Renogy 40A DC-DC Charger on Amazon - amzn.to/2I5WgJP

@robertmeyer4744 3 года назад

great system. a outher tip i used on a install was a voltage controlled relay tp turn on DC/DC charger trigger wire. set around 13.8V That way if alternator fails or engine stop no draw from start battery. newer trucks and cars use the computer to off set the voltage regulator using temp/time load etc. and is set for a start battery for long life. my ford came with 2 battery's and 2 alternators.

@GaryBoyd02 4 года назад

After carefully reviewing your sophisticated drawing I have come a fairly concrete observation. You need bigger TIRES! LOL All your problems would be solved!

@emersonkk33 4 года назад

LOL. I was thinking the same thing!

@jon.landry47 4 года назад

Those tires remind me of the “Kilroy was here” cartoon from WWII. And, no, I’m not that old.

@kharicoen7962 3 года назад

not sure if you guys gives a shit but if you're stoned like me during the covid times then you can watch all the new movies on instaflixxer. Been watching with my girlfriend these days =)

@maddoxdrew3810 3 года назад

@Khari Coen yup, have been using Instaflixxer for since november myself =)

@mattinthehat22 3 года назад

Never seen a pickup with a 1:1 ring&pinion setup rofl

@The3800Bird 4 года назад

This was exactly the video I was looking for. We recently took a trip in our travel trailer and I noticed the truck would not charge my 2 AGM's while driving even though it would show an increase in voltage through the 7-way. After some research I found I needed a DC to DC charger to get the amps needed to charge my house batteries, and your video simplified the installation for me. The connection between the truck and trailer is where I was stumped. Anderson connectors, why didn't I think of that? LOL Thank you!

@LoveYourRV 4 года назад

You're welcome, you should see a big improvement on charging, cheers, Ray

@LostOnLandAgain 4 года назад

That's the charger I use. It not only charges my batteries while I drive but I can also charge my e bike or other electronics while I drive and when I land everything is fully charged. LOVE IT. I almost never use my solar panels now.

@fisherguy Год назад

The trailer we just bought has 3-100Ah Lithiums, 600 watts of solar and has the same Renogy DC-Dc charger so this video will be helpful wiring up my 06 Ram. Last time I wired solar etc was over 10 years ago and I used a Trimetric. (Think I'll use Victron in thhis new one) I noticed Bogart has a phone app now? That's pretty handy to be able to sit in the cab of your truck and monitor your RV batteries. Hope the Victron has that range. Also it's pretty cool you answer practically every comment, even when they ask the same questions over and over. 😉

@wingnutbert9685 3 года назад

Whilst some may give you stick about the drawing, it's content is perfectly to the point and is stylistically representative of my level of ability to understand this stuff!!! Bravo!

@gbthecamper458 4 года назад

At the end of the day I did run a full negative from the battery to the Andersen connector. I had the wire and said “what the heck”. Thanks for the feedback.

@kendclife7913 4 года назад

I have learned a lot from you over the years. I use this DC to DC smart charger in my Class B. I used to have the EcoTrek system, but I had it totally removed, and I use Renogy lithium's with this Renogy smart charger.

@LoveYourRV 4 года назад

Cool, thanks for the feedback. I've had good luck with the Renogy panels over the years. Price was pretty good for the charger compared to others on the market. Cheers, Ray

@HSkyler 4 года назад

This makes a lot of sense and would be a great addition to a solar setup. I'll refer the Renogy Charger to the solar pros who will be installing and/or upgrading my RV system. Thank you!

@LoveYourRV 4 года назад

You're welcome, just make sure you're alternator can handle the extra load. Cheers! Ray

@HSkyler 4 года назад

@@LoveYourRV Thanks for the advice. If you have a few minutes check out Loloho's new video on a solar set-up. It includes the Renogy Charger. Very helpful information - for me to give to the solar experts! I'm not a DIY person when it comes to electricity. I just like to get a grasp of what I'm paying for. :-)

@fishhuntadventure 4 года назад

HSkyler Paying experts.... get references from people doing what you’re wanting to do. I worked for trailer place for a while. Behind the scenes proof of what I’ve always said: paying someone to install something so it works (even if the install “looks” good) is entirely different than getting it done well or properly. I can’t believe stuff I’ve seen people willing to pay for over the years! They just don’t know. They trusted an expert.

@hoofheartedicemelted296 2 года назад

Charge while you drive? Makes a lot of sense sir. Thank you for your help. Have a great week.

@billhackley3540 2 года назад

watched 4 dc to dc videos before this one. WOW everything i needed to know right here, filled my amazon cart as well thank you

@LoveYourRV 2 года назад

You're welcome. :)

@billhackley3540 2 года назад

@@LoveYourRV one thing took a few rewinds to catch you mention grounding at the (pickup) frame. is that still working out, worried about issues down the road

@LoveYourRV 2 года назад

@@billhackley3540 No problem so far. It saved me the cost and hassle of a run of wire on the negative return. My trailer manufacturer uses frame 12V battery grounds for the same reason and I've had it for over ten years with no issues. Every few years I clean and retighten them. The truck manufacturer obviously also has the frame connected to the batteries or else my frame return wouldn't work. I think the big concern would be the type of vehicle and its construction. Some these days have very little metal in the frames or are not completely connected, but my pickup truck uses large steel beams running the length of the truck.

@billhackley3540 2 года назад

@@LoveYourRV thank you i'll do the same, have spent a fair amount on lithium and low frequency inverter charger, have a fair amount in amazon still you've been very helpful. just got started in march with no experience

@trolling4dollars816 4 года назад

Much better choice in connectors. Very good upgrade!

@jameshamm7911 4 года назад

What a smokin' mod (well, actually I hope not 'cause smoke would be bad, lol)!

@97fdexp 3 месяца назад

Very helpful video, I am getting ready to instal 20a Renogy just like this.

@autopeep24 Год назад

Wow , good presentation Ray.

@singler3360 10 месяцев назад

Thanks so much for this comprehensive video and list of components. It's very much appreciated.

@LoveYourRV 10 месяцев назад

Glad it was helpful!

@DavidSmith-vo3nd 4 года назад

Thank you Ray That's a nice clean install!

@justintyme1449 2 года назад

Thank You, you answered an important question for me…. I just received this DC to DC charger that I ordered, but then this week saw a video of a new version that has dual input for alternator and solar……so I was unsure how to couple this unit with solar, but you showed that you can couple them at the battery bank…..I was worried about reverse current shorting out the solar panels when the alternator or generator current started……thanks for easing my mind

@Ivansgarage 4 года назад

Hi Ray, seeing your drawing of the truck and trailer all I could think about was that theme song to the Flint Stones.... Lol

@michaeldoherty2289 3 года назад

Very helpful video. I am installing a 60A Renogy DC DC charger in my 2019 Ram 3500 Cummins. I decided to use 1 AWG wire and ran a both wires from the truck battery to the trailer rather than using the chassis ground. More money but I felt better about it. I have a 240AH LiFePo4 battery that I built with prismatic cells and the battery manufacturer stated the 60A was a better choice. The Renogy charger is a great product at a very fair price. Costs more for the wiring, Anderson plugs, and breakers than the Renogy unit but all in all well worth it.

@LoveYourRV 3 года назад

60A is a good choice for the lithium batteries , just have to make sure that your Ram alternator can handle the extra load. On the input side of the charger it may be drawing around 70 amps. Cheers, Ray

@michaeldoherty2289 3 года назад

@@LoveYourRV No worries Ray. My truck was set up at the factory for pilot car or snow plowing and has twin 220A alternators! I felt it was a shame to waste all that power! I really liked your video. It help me out a lot in my decison making.

@LoveYourRV 3 года назад

Awesome!

@michaeldoherty2289 3 года назад

@@LoveYourRV I have a similar setup to yours with 400W of solar on the roof. We have never run out of power in the summer months often boondocking for weeks with no issues. I wanted to be able to run the refrigerator on 120V when on the road, and the solar alone didn't allow that. Now with the DC DC charger we will be able to do that easily with no power issues at all. Inverter or inverter/charger install is next. Working on how to fish the wires 3/4 of the length of the trailer in the closed frame to accomlish that in the next few weeks.

@matt9c1 3 года назад

Good job with the project. I would suggest enclosing all your wiring in split loom to protect it from rubbing.

@LoveYourRV 3 года назад

Thanks, I chose cable with a double jacket that has an extra-thick outer layer but may add some loom in certain areas. Cheers, Ray

@raystanton238 Год назад

Thanks for this very well done video. I really liked the parts where you showed the actual amperage on your meter and amperage on the other info display. I used the same dc to dc charger, 4awg cable and anderson connectors but I was able to run the feed from the Anderson inside the 5th wheel overhang to the dc to dc charger mounted inside that front compartment. I also used a chassis ground like you did and when the lithiums were low on power, the amp meter showed 39.7 amps. FYI, I have the same truck and same clampon meter. That meter is a mini but the amp jaws can still open just enough to go on a 4/0 cable!

@rvtravelusa350 Год назад

Great video Ray, love all the info you share and hope to update my trailer soon.

@keithhansen3963 Год назад

Yet another extremely well-presented tutorial. Thank you

@tomgreen4094 Год назад

Definitely go with a DC to DC charger, solar isn't dependable enough these days. Great video proving this, the charger was putting out 4times the amps as the solar.

@jussikankinen9409 9 месяцев назад

Too much screen time

@asshole993 3 года назад

Love the production of your video. I have a Pilgrim 5th. wheel and a dodge ram diesel on the hook. I built a very similar system with same type of parts about 2 years ago. Wish I had seen your video, before racking my brains out to make this system. I still do not have a solar system, because I find that in northern Alberta we do not get enough sun to make a huge difference and warrant the input cost. But, I do have a installed generator for extended dry camping. Now, I am building a large out-put Lifepo4 battery bank, Great video, keep up the great informative work. Good health and rving. Dave

@LoveYourRV 3 года назад

Thanks! I recently added a wireless on-off mod to my setup www.loveyourrv.com/12-volt-wireless-switch-mod-for-my-40a-dc-dc-charger/ Cheers, Ray

@sergeikondratjuk4539 4 года назад

I was going to do same thing with my semi Instead paying 5000 “EPU” Finally found right video

@williamfry6087 2 года назад

you are super good Ray, thanks. William in Montana.

@Spridle60 4 года назад

Great video! This is a huge deal for me. I have owned a fifth wheel and a travel trailer with 4 different trucks and none of them could charge batteries reliability going down the road. The battery positive in the 7 pin connector hardly does anything for the battery's in a trailer. Now I know why and how to fix it.

@superflycatchermtb 4 года назад

I'm with you...i ran a camper on my Ford Superduty for 5 years and could never figure why it wouldn't top up the batteries after 4-6 hours of driving. with 14ga wire running nearly 30 feet I wasn't getting more than a couple amps per hour through the 7 pin.

@Abeaness 3 года назад

I took Physics in HS (way too MANY moons ago) so forgive me for asking what might be a stupid question for those that are more electrically inclined - but - if the DC TO DC charger “BOOSTS” the charging capability, why do you need to run a separate and larger wiring setup for the entire route?

@Roy-ij1wq 2 года назад

@@Abeaness Think of how much water flows in a small creek when the sun is shining. Then think about what happens when it storms and there is more water than the creek can hold. You end up with a flash flood. Its the same thing with electricity where amps is like the water current flowing in the creek. Only with electricity the byproduct of excessive current is resistance that causes heat to build and wires to melt. Another thing to consider is that a fully discharged lithium battery will eat current like a hog eats corn and can fry your alternator along with the wiring. Lithium batteries are suppose to have a built in battery management system to regulate current but not all BMS systems are created equal. The DC to DC charger regulates the amount of current and protects your alternator provided that the alternator is designed to handle the extra load.

@808pathfinder 6 месяцев назад

this is one of the best videos to watch ,808 approved 👍

@radiok2ua 3 года назад

Really excellent, comprehensive video. Thanks! I picked up some tips on terminal fuses and breakers in this--much appreciated.

@sgtevmckay 4 года назад

thanks again...looking forward to long term report.

@ZeroMilesTravels 9 месяцев назад

❤Thanks for detailed info, links for purchase, and beautiful video

@brentmcmahon8188 11 месяцев назад

I put a off on switch that lights up when on. If you forget to shut it off , the lithium batteries will drain your start fry and that’s why I carry a Norco jump box when I have my camper on my dullay .

@PDX53 4 года назад

Hi Ray - I did basically the same with an isolator & breaker from Hellroaring Technologies. Per their recommendation I ran 8 ga wire & have an Anderson Connector mounted next to my 7 pin connector under the bumper. The other half of the connector is wired thru a marine fuse (saw them on your rig) running to my single 200aH AGM battery & it'll charge from 50% to 100% in about 2 hrs of driving.

@gazjaz2010 4 года назад

yea ... thats the old school more expensive less effective way to go about it. as he mentioned, lithium batteries require a bit more finesse regarding voltage when charging.

@TheBuddy1939 4 года назад

That mod is fantastic. Okay, on your daily brainstorming which I presume might come to you at night in a revelation *lol* how about figuring a way to evaporate water into your fresh water hold tank. Great job Ray love it.

@marysuetells9173 4 года назад

Use a dehumidifyer. It works!

@rhondaanderson2764 3 года назад

...condense water... 😏

@bornfreefreedom4900 3 года назад

Great stuff. You doing good. Wishing you and all forever safe travels. 🌟🙏🚐🌎

@aross3699 4 года назад

Thanks Ray, you didn't say much about cost. I suspect you have as much money into wire as the cost of charger. That's OK as you do electrical installation correctly. Good Job.

@LoveYourRV 4 года назад

Yes cable is a big cost as good copper wire is pricey that's why I tried to keep the gauge to 4GA, I have a parts and tools list in the description.

@jmrichsonsr 4 года назад

👍👍👍 Timely video. I just ordered this same charger a week ago and waiting for it to arrive. As usual for you, this an excellent and very thorough video. Thank you for sharing👍👍👍. Happy trsils‼️

@darrylm3627 3 года назад

Great Tips, Good Stuff 👍 Thanks!

@loveu2222 4 года назад

love it, this dc to dc charger sava us a lot of generator runing time..

@pmwilliams123 4 года назад

For just a little more dollars, I have a Abso DMT-1250 combination DC-DC charger, which handles 50 amps on a 12 or 24v alternator, and also includes a separate input for up to 500 watts of solar panels, optimized by an MPPT solar charge profile that can be adapted to AGM, Lithium, and even has a programmable profile for future battery custom profiles or if you want to limit the draw on your alternator. This solar port can also be used to wire in an AC to DC converter that will then be plugged into shore power. This Renogy is good if you don't want the extra flexibility.

@LoveYourRV 4 года назад

Good deal for all in one, I saw Renogy had something similar amzn.to/38lh0ba but I have a solar system setup already with a 30 amp solar controller, so I can output up to 70 amps when combined, also have a 60 amp charge converter on-board for shore power, sort of like having the systems separate in case one fails. Cheers, Ray

@meldeer6253 3 года назад

thank you im going to try it your wiring diagram all so solved my problem of how and wair to mount it thanks again

@vittorioviarengo Год назад

Thank you!! Great explanation!

@twoadventurersontour Год назад

Thank you for a great video, good info. We like and understood your truck drawing 😊

@vickishort9128 3 года назад

I recently purchased a lithium battery 170 amp hour from Big Battery. Comes with an Anderson connect rather than having the terminals exposed which I like, and it also has a shut off switch to turn the battery off from sending out any current. And for the price for 170 amp hours it’s like 900 bucks which is less than the Battle Born for one of theirs and has a 10 year warranty as well

@LoveYourRV 4 года назад

*UPDATE* Max Off-Grid Charging Amps Test (Solar + Generator + Alternator) - ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-Nt3CG5qeF5o.html I test how much amperage I can pour into my 315AH Lion Energy lithium battery bank at if I combine my 30 amp solar controller with a 60 amp Intelipower charge converter and my new 40 amp Renogy DC-DC charger. The battery bank was at a 50% state of charge during the test and all chargers were set to 14.4V. In this informal test, it came out to right around 100 amps with all charging at the same time and around 85 amps with the generator and DC-DC charger from the truck alternator combined. All and all not bad. See the previous video where I tested out using a Bogart SC2030 solar charge controller as a DC-DC charger via a temporary cobbled together setup - www.loveyourrv.com/alternator-charging-mod-12-vdc-truck-bed-high-amp-power-port/

@ScubaSteveCanada 4 года назад

Hi Ray, in my Class B, I can charge my LiFePO4 batteries up 60A via the alternator, even at idle!! Comes in very handy during inclement weather (normally use solar). The BMS splits the 60A to 30A per battery. Current slowly tapers off as they charge up to 100%. Much better than running my noisy Onan generator. Between solar and engine idling, I haven't used my generator (boondocking since November 1).

@LoveYourRV 4 года назад

Joe, the whole point of the DC-DC charger is to isolate and properly charge the house batteries. The Renogy has a setting to use it with lithium type. As far as it goes the Renogy is one of the most affordable out there. Yes, spending a bit extra on diesel but saving it on the portable generator gas. Which is more efficient I don't know that would be an interesting test, but I know its a pain to haul out the portable genny, especially if the weather sucks. ;)

@fredthompson2501 4 года назад

Hi Ray any time you have 12v at the truck side of your charger it should be on. Run your trigger to the + side of the truck. Your ground for the rig side should go to the battery bank to get max amps to the battery bank. I am a retired car audio fabricator\installer 20 years.

@joecool509 4 года назад

Make a jumper cable with the Anderson connector and it is great for backing up to someone and giving them a junp

@LoveYourRV 4 года назад

Good tip, but I carry a better solution for jumping starting :) - www.loveyourrv.com/noco-gb150-battery-booster-review/

@rjl7765 4 года назад

@@LoveYourRV I just viewed the video in the link here. And a bit confused ? You say your Cummins is a 7.3? Did you mean it is 6.7? BTW good informative video as usual. cheers

@LoveYourRV 4 года назад

@@rjl7765 That was an older video from 2017 when I had an old 1994 7.3L Ford F350 - www.loveyourrv.com/big-baby-blue-1994-ford-f350-truck/ now I have a 2018 6.7L Cummins in a Ram 3500. Cheers, Ray

@Roy-ij1wq 2 года назад

You also asked when you would use the current limiting feature. I have the 60 amp model and use it in hot weather and/or when I am using multiple accessories to take strain off of alternator. I also use it when my batteries are charged and I only want to run the refrigerator on AC

@Roy-ij1wq 2 года назад

I should also note that you can install an on/off/on toggle switch in your fifth wheel where one switch sends power to D+ and LC, and the other switch only sends power to D+. I ran two wires from my coach to the tow vehicle and have the toggle switch on my dashboard so I can control it when driving. When the DC charger is pulling 60 amps it is causing the engine to use about 5hp to run it which makes a slight difference in fuel economy.

@LoveYourRV 2 года назад

My 6.7 Cummins diesel doesn't seem to even notice the charger. I also have an optional oversized 220 amp alternator and bare-bones model truck as far as options, so there is not much chance of overheating normally. I have installed a wireless fob switch though, to have the ability to turn off the charger remotely if I want to. Usually, when I'm pulling steep grades, I turn it off. www.loveyourrv.com/12-volt-wireless-switch-mod-for-my-40a-dc-dc-charger/

@Roy-ij1wq 2 года назад

@@LoveYourRV Very cool. I pull power from my running lights to power my backup camera. Can you configure the switch to power the running lights from the house batteries when you are parked? If so I could use my backup camera as a security camera when parked.

@LoveYourRV 2 года назад

You could get a female 7-pin plug receptacle Example: amzn.to/3JRKRw8 and then wire in the wireless switch board so it can switch the running lights and 12V battery charge pin on and off www.ajtnt.com/portals/ajstruckandtrailer/7-Way-RV-Style-Trailer-Plug-Wiring-Diagram-2.png Then when you want to use it just plug it into the male end on the trailer. :) Personally, I just wedge a blade fuse in there to do it manually.

@nightfall22 4 года назад

So awesome! Just subbed. Great info to be had in this video and also I was asking about Anderson connections to the truck bed and low and behold I just saw yours! 2 birds with one stone. I’m here to stay.

@crankshaft007 Год назад

Thanks for the video, I believe the gauge wire is based on distance and measured by voltage drop between the two ends of the cable. Saying the cable isn’t hot is a very poor measurement of what is going on. Beyond a horrendous undersized cable or bad terminal Other then that some amazing detail on installation

@LoveYourRV Год назад

If the cable is undersized the DC-DC charger will keep trying to pull more amperage through it to output the 40 amps to the batteries so knowing that the cable isn't getting too warm is a quick and easy way to know that the cable size is adequate for the amperage passing through it. Too warm and you know there is a problem. Too much voltage drop means to much resistance which translates into too much heat.

@mattinthehat22 3 года назад

I really like the idea of the breaker up front and the quick disconnect between truck & trailer. Nice install. Ima go this way instead of the all-in-one from renogy bc I'm pretty sure my panels will be in series with too much voltage

@Roy-ij1wq 2 года назад

Some users have experienced problems with the breakers overheating and tripping when they are mounted in the engine compartment. This is why I went with a fuse block and on/off switch.

@AlcoholFreeRV 4 года назад

Thanks for the video Ray, I have been considering the same add to our RV; we dont have solar but also dont like to run the fridge on propane while in transit. Would be great to get to camp with full batteries!

@bigjim11566 4 года назад

All this is nice, long as people are aware, alternators arent designed to charge batteries, they maintain a charge an power everything while driving, so placing more load on it can drastically shorten life span of alternator

@LoveYourRV 4 года назад

Very true, that's why its a good idea to get the higher output alternator option or even go with dual alternators.

@bigjim11566 4 года назад

@@LoveYourRV i know on semi when over road i had microwave, tv, etc soon as got home i put charger on it an had good luck, do same with class C on engine batt, have solar on coach batt

@crazyman3157 4 года назад

Thank you for another great video Ray. I always learn something from your videos. 👍🏻

@brentmcmahon8188 Год назад

They make a large trolling motor plug hood for 60 amps that’s what I did and the bigger one is super nice and I have a Bigfoot truck camper and mounted the plug inside front side of bed. They say if you use too big of wire that the lithium’s will draw a ton of amps and burn or wear out prematurely, that’s what I ran 6 ga and so far so good no warm or hot wires.

@LoveYourRV Год назад

The DC-DC charger will regulate the max current flow into the batteries. Doesn't matter how big the wires are the max output is 40 amps of the charger in this video. And actually a larger wire on the input side of the charger will lead to less current draw as there will be less voltage drop so it will draw less amperage to make the same wattage transfer.

@bertone6996 2 года назад

Very nice information.on my my 22 Dutchman 94 fifth wheel i did different charging sistem easy and cheap. I will make a video soon i got some time to spare..Just subscribed cheers from an Italian in Canada.

@KRich408 2 года назад

I've been wondering how to safely charge Solar batteries through the 7Way connection? I haven't gotten a Solar system yet I knew letting the Alternator in my Diesel Ram 2500 charge the batteries could damage them! Now when I pull the trigger I have to figure out how to wire this thing into the trucks system in a way I can remove it and restore it to factory if/when I Upgrade to a 1 Ton truck. I plan on buying a Hybrid system that can use shore power or generator and Solar simultaneously. Now I can use my truck to add a source of safe power, the Diesel can pump out a lot of amps since it has too keep two huge batteries charged. 😀

@LoveYourRV 2 года назад

The 7 way cable in safe but usually has poor charging abilities. Due to the long length and small wire diameter the charging amperage is generally quite low. It's like trying to get good water flow through a straw versus a water hose.

@rd4660 4 года назад

I have a dc to dc charger in my truck that will put 60 AHs of power into my 540 AH AGM battery storage. My trigger switch is on the dash. The charging profile of my batteries allows only two hours of bulk charging, so while underway on cloudy days I charge two hours, then let the solar panels top the bank off. I find in the summer I don’t need to use the dc to dc charging, but it sure helps in the winter! Of course your lithiums will take all the juice you can send em, so you can use the dc to dc charger to fill those babies up!! Nice mod.

@windygorge1 3 года назад

you are a stud. so knowledgeable

@jpontheroad 4 года назад

very well done, exactly the setup I'm looking for, you just earned a subscriber

@apocolypse11 4 года назад

Charging limit is for battery size. A 40 amp charger will work perfect with 400ah battery. Or it could be used to limit the amp going to the battery an run other accessories.

@LoveYourRV 4 года назад

Also, depends on the battery type. My old golf cart lead acid batteries recommended a charge rate of 15 amps, so I used to charge the 4 of them (combined 464ah) I had at near 60 amps. But my new lithium batteries are much different. Each 105ah battery has a max 100 amps charge rate and a 45 amp recommended rate. They can take a much higher rate of amps. So the 40A DC-DC charger would work well with just one. How do you limit the amps going to the battery? Cheers, Ray

@charlesking227 2 года назад

Love your videos. I was watching you connect your DC to DC charger and you used jumper cable wire. Most all jumper cable wire is copper coated aluminum wire. Do you think that aluminum wire will hold up under hours at a time of 40amp usage? Thx

@LoveYourRV 2 года назад

I don't know. I used 100% copper ones I found at a truck stop and they have work fine. But a person doesn't have to used jumper cables I did because it made it nice since the two cables were attached together. I linked to some 100% copper ones found on Amazon amzn.to/39hUVAr TOPDC Copper 4 Gauge 20 Feet Jumper Cables Well-constructed with solidly built heavy-duty clamps, and made of high quality raw material. All these small details make TOPDC jumper cables remain flexible even in extreme weathers like -40℉/-40℃. 100% copper wires make it extremely flexible. It comes with safety gloves, this makes you ultra-safe. Also, this includes a durable carry bag which makes it convenient to store and keep your trunk clean and tidy. 100% copper wire 300 Amp jumper cables. Remain flexible at -40℉/-40℃ to 167℉/75℃ Comes with safety gloves Strong spring make the clamp hold up terminal well

@stuartbaxter9437 4 года назад

Hi Ray! Safe travels!!

@timaz1066 2 года назад

Thanks for the video

@kurtmcmichael2045 4 года назад

Great video Ray!

@AKRichardM 4 года назад

Pretty cool device!

@BearCat459 3 года назад

I personally would put some wire loom cover it what ever it's called and put the wires that are outside in it. To help with weather and stuff.

@LoveYourRV 3 года назад

Good tip. I decided for the wire that runs under the truck I used stuff that is double jacketed. A tough inner wire covering plus a softer thick outer jacket for protection. I'll add some loom over that. Cheers, Ray

@NigelM18 4 года назад

I love the idea of just tagging onto the SCC output. So if you were in a motorhome I assume you would have just used the keyed ignition on lead for your trigger? This is so the dc dc charger doesn't drain your starting battery after your engines off.

@LoveYourRV 4 года назад

You can use any 12V trigger source you desire. What ever works best for you. Cheers, Ray

@joecool509 4 года назад

Some laws prohibit propane use while traveling so running your fridge off the car is a great idea.

@brentmcmahon8188 11 месяцев назад

You need the big trolling motor plug works perfect for me wires are cool no heat .

@LoveYourRV 11 месяцев назад

These connectors work pretty good too amzn.to/3FTU71G I used one when I built my truck box power station ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-ztIYUGFQorE.html Cheers, Ray

@Monstufpud 10 месяцев назад

the limiter is good for if you are just idling

@michaelcunningham1364 4 года назад

Well done!

@brentmcmahon8188 2 года назад

They have a higher amp trolling motor that is up to 60 and it’s just bigger for like 36 volt trolling motor that’s what I have and trigger wire goes to a switch so I can let every thing to warm up before I turn Renorgy 40 .

@douglundy5755 Год назад

Just found this on sale for 129 and couldnt pass up, to add a lithium battery on the boat which needs a little more stable power source when the lead gets low.

@GeneratorReviews 4 года назад

Awesome job on the video.

@patriotcrusader1 4 года назад

I See your summer project became the Spring project LOL I sure like how you connected the signal wire if we ever cross paths I’ll show you how I did mine kinda on the expensive side of things using the power wire in the tow lite plug

@LoveYourRV 4 года назад

Yeah, so much easier to get parts off Amazon USA then CA. :) and cheaper! so went for it.

@boulderwy3387 4 года назад

I just wired mine to the 12V wire coming from the 7 Pin RV plug. That output is switched on my truck and is only hot when key is on. So didn't require anything special.

@mw8846 3 года назад

@@boulderwy3387 Would you please provide details about where you connected to your 7 pin for the trigger? TIA!

@jimk5145 3 года назад

Video: "I have nothing to do with Renergy." Video comments: "Shop Renergy using my affiliate link."

@LoveYourRV 3 года назад

True at the time I recorded the video. Joined the affiliate program months later and added the link which I labeled as an affiliate link.

@michaelcooley3733 2 года назад

Why add a switchable breaker between the battery and the charger when you can simply disconnect the wiring harness if you want to isolate the charger? Seems a bit overkill since you actively protected the charger and the wire with a 60 amp terminal fuse. Thanks

@LoveYourRV 2 года назад

I wanted the ability to be able to switch power on and off to the outlet by the tailgate for powering other items if I want and I also didn't want the whole cable live all the time. Only when I'm using the rear outlet. Maybe overkill but that's the way I wanted to do it. Cheers, Ray

@RiDankulous 3 года назад

Thanks for the video and it's very interesting! That oscilloscope is fascinating. I"m no electrician or even too mechanically inclined but I'd prefer that type of device over having to connect wires to do a test. :) Just a thought from a novice armchair fan! =D I heard there's a way some DC-DC charges can do the reverse also. Not sure how that would get done though, but it would allow the starter battery to be charged from leisure battery bank. Of course, it's not for every application.

@LoveYourRV 3 года назад

I'm pretty sure this one doesn't support the feature. Not a big deal though I carry a booster box and could easily jump start the truck then take it for a little drive to recharge the starter batteries. Cheers, Ray

@RiDankulous 3 года назад

@@LoveYourRV Very nice, thanks.

@garyswitzer6867 3 года назад

Nice learning experience video. I often wondered what to do once I convert the RV from flooded lead acid to Li battery when traveling. That's a goal for next year. By the way, I have the same TM-2030 & SC-2030 units and the Renogy 200 Watt folding suitcase Solar panels. I connect those together with the same 4 gauge weld wire on Anderson connectors to the SC-2030. I don't boondock as much, nor longer than 3 days, so if I do get the DC-DC unit, it would just be the 20 amp and I would connect into that same Anderson connection point. Because portable solar isn't deployed during travel and the Bogart set would be matched to Li by then. Combined with the existing trailer connector output I should have ~ 25 amps max; good since I only have the 170 amp alternator and only 2 batteries max. In time, you may want to change that DC's output 40 amp circuit breaker. As you know and similar to the AC circuit breakers, they will handle full rated load but the 80% load is what code requires so you have a built in safety zone of 20%. So as for these DC breakers , I would recommend the same. Only load it to 80% , but it will trip over it's rated capacity. You never want to continue loading a circuit breaker to its full rated capacity as this would be asking for intermittent breaker trips and you might not know it. So a 50 amp breaker's 80% load would match nicely to your 40 amp loads. Happy Camping!

@rick-oj2pd 2 года назад

Ray, I'm wondering about the talk I hear about the Lifepo4 batteries hurting the alt. or killing the tow vehicle batteries. Can you shed any light on that?

@LoveYourRV 2 года назад

This is my understanding. LiFePO4 can charge at a very high amperage because the cells have very low internal resistance, most 100AH LiFePO4 BMS's are set for max charging usually up to 100A, so if say you have 3 in parallel that can draw up to 300 amps! way higher than many stock alternators can output without overheating and maybe failing. So they usually need some kind of regulation/isolation device in between the coach and starter batteries. This is mostly a motorhome, van, and truck camper concern though. And I would say most higher-end motorhomes will already have some kind of regulation for alternator charging as a bank of say 6 AGM batteries can draw a pretty hefty charge current as well. Motorhome people need to investigate how their system is wired when they install lithium. On trailers, it's generally not a big concern. The tow cable charge wire is usually so long and thin gauged that it will self-regulate because of a significant voltage drop due to high resistance in the wire run. Usually, it's a trickle charge at best, not really much different than the old lead-acid batteries. Tow cables wiring usually is fused quite low (for example 20-30 amps) the fuse would blow well before you could hurt the alternator. Often there is a relay in the circuit that shuts the charge off when the ignition is off. Things vary between models and manufacturers. But even without a relay and a direct connection, it's more likely that your trailer lithium bank would actually charge the tow vehicle batteries when sitting at rest than the reverse. :) Lithium batteries usually sit at a much higher voltage around 13.2V and need to be above that to charge at all. Lead-acid sit and charges at much lower voltages. So current would flow from the trailer lithium to the lead-acid truck batteries. But like I say often there is isolation via a relay or diode to prevent that. Cheers, Ray

@rick-oj2pd 2 года назад

@@LoveYourRV THANK YOU VERY MUCH FOR THE EXPLANATION ! YOU ARE A WEALTH OF INFORMATION. I HOPE WE MEET ON THE TRAIL SOMEDAY.

@Roy-ij1wq 2 года назад

I noticed that you have a PD9200c smart charger. This model doesn’t have a charge profile for lithium batteries. There is another model for lithium.

@LoveYourRV 2 года назад

Yes, I have a model PD9260C but I also have the manual Charge Wizard pendant. So what I do when I need to use it to charge my lithium bank is press and hold the button for a second or two until the LED stays solid. It is then in a manual boost mode and outputs 14.4VDC which is perfect for charging my lithium batteries. I think if I remember right the manual boost mode last about 4 hours or I can turn it off by pressing the button again. Cheers, Ray

@Roy-ij1wq 2 года назад

@@LoveYourRV I'm not familiar with manual override feature you describe but am a big fan of Progressive Dynamics products because they are high quality and affordable. The Progressive Dynamics PD9100 series are the converters that are designed specifically for lithium batteries and come in several sizes. I also needed to upgrade my power distribution center and considered the new PD line of combination power centers that include a converter that can be configured for lithium batteries. However, the combined power centers do not work well if you also have a separate inverter because there is only one AC busbar. This creates a loop where the converter is trying to charge the batteries while the inverter is using the batteries to power the busbar. This is why I went with a separate PD60 series DC Distribution Panel and a PD55 Series AC Distribution Panel when I installed my PD1600 series inverter. The PD55 has two busbars so you can install the shore main breaker, the converter breaker and the inverter input breaker on one bus, and the inverter output breaker and everything else on the other busbar. When the PD1600 built in transfer switch detects that shore power is no longer present, the busbar with the shore main and the converter breakers is automatically disconnected.

@LoveYourRV 2 года назад

My OEM power center has a breaker just for the OEM converter. So, I flip it off when I go off-grid to avoid the charging loop. I also have a transfer switch that can do that automatically but never bothered to hook the converter up. The PD converter is a second converter I dedicated for off-grid charging, and it's installed right next to my battery bank to avoid any voltage drop or wire losses. I also wired in a dedicated receptacle for it at the front of the fifth wheel to plug in the generator cord. I initially bought it for faster lead acid charging of a 4 golf cart battery bank by utilizing the boost mode. Since it works well for lithium, there was no need to spend money on a Li charger.

@Roy-ij1wq 2 года назад

@@LoveYourRV My OEM panel also had a separate breaker for the converter and you can simply turn off the breaker to avoid the loop. But I was doing a total replacement of my 43 year old panel and contacted Progressive Dynamics tech support for their recommendation. They recommended that I either install a separate panel for the main and converter breaker or use the configuration I went with. Their logic is that if something is not automatic someone will make a mistake. Like you, I trust myself to not forget to turn off the converter breaker. But I have a 49 year old absent minded son that uses the trailer from time to time and I don't trust him to remember.

@ScotWalt858 4 года назад

Nicely done!

@redwood1957 10 месяцев назад

Where those wires go into the box you said you were going to silicone. I would purchase a cgb fitting instead. Thank you

@LoveYourRV 10 месяцев назад

Thanks for the tip. It's been like that for 3 years now, and there are no leaks. The entrance point is tucked up pretty high and far back under the fifth wheel overhang, so not much water even gets to it. Cheers, Ray

@pvf1799 2 года назад

In your video you show a buss bar with a clear plastic cover. Can you tell me where you purchased that particular buss bar from please?

@LoveYourRV 2 года назад

It's a Blue Sea Systems 5503 ANL fuse block with insulated cover www.bluesea.com/products/5503/ANL_Fuse_Block_with_Insulating_Cover_-_35_to_750A Got it from Northern Arizona Wind and Sun www.solar-electric.com/blue-sea-systems-5503-fuse-block.html I also use it as a holder for my inverter protection fuse. Cheers, Ray

@brentmcmahon8188 Год назад

Iam thinking about a second alternator that would be an easy way to pump up the volume!

@LoveYourRV Год назад

I thought about a dual system when I factory ordered our Ram. They had a 440 amp package option. But figured the extra stuff under the hood wasn't worth it for me. 220 amp option is enough for my needs.

@audiophilephile 4 года назад

Nice presentation, I've been wondering what this dc to dc stuff was all about. My new truck came with a 400W max 120V outlet adjacent to the tailgate. I've toyed with the idea of using a 120V input charger in the bed or near the battery plugged into this outlet. I have a NOCO 7.5 amp charger that I carry to charge the truck battery from the LFP in the RV via the inverter (I've used that just once when I left the truck's internet on too long a year or two ago). But, it could also be used to charge to charge the LFP from the truck's 120V bed outlet (with ignition on). A larger unit with 20 amp or a bit more could also be used (need to assure less than 400W at the input).

@fredthompson2501 4 года назад

Mr Clark that not good idea. You would be losing to much power going from dc to a.c. to dc again. 400 watts inverter could be a modified sine wave not good for running chargers etc.

@fishhuntadventure 4 года назад

Fred Thompson That’s right! It’s too easy and inexpensive these days to do things like this cleanly and without extra stuff to do to make everything work (or worry about rain.)

@garyswitzer6867 3 года назад

Yeah, what everyone else said, way too much energy efficiency loss. But a better option in my opinion is to use a DC-DC x 20 amp unit and for the 12 volts, tie into the back 12 volt wires to that inverter. They should be thick enough for the 20 amp unit.

@brianpetersen3262 3 года назад

Hi Ray, question for you. Did you happen to install a diode on the 12v charging circuit coming from the truck, the one through the 7way? I am wiring in a 60A model and am concerned with a back feed scenario.

@LoveYourRV 3 года назад

No, I didn't bother. I've been running solar panel charging for years with the tow cable hooked up and no issues. The solar charge controller puts out a similar 14.4V output as the DC-DC charger and the alternator does. The only scenario I can see being a problem is if the trailer batteries were very low in voltage basically dead and the truck was hooked up and not running, say overnighting somewhere. Could draw down the truck batteries. But I've never run into that situation myself. It's also possible the truck has a relay so the charge line is only active when it's running. Or one could unplug the tow cable. Cheers, Ray

@brianpetersen3262 3 года назад

@@LoveYourRV Thank you for the reply, keep up the great work, I enjoy your content! Travel safe...

@thomasmolnar1569 2 года назад

@@brianpetersen3262 If you do install a diode, (it was my concern also, having a sneak path or a circulating current) I plan to install a Schottky diode in series with the trailer plug, it has a lower PIV (.3v vs .7v) therefore less losses across the diode.

@brentmcmahon8188 2 года назад

It runs my 12 volt AC unit on truck camper that’s why 6 gauge wire it’s so short wires .

@commonsense2469 Год назад

Hi Ray, great video as usual! One question for you, do I need to disconnect the 12V line in the 7 pin plug to prevent the drawn on the alternator?

@LoveYourRV Год назад

Thanks. :) That can vary depending on your vehicle wiring. For my Ram I left it the way it was, it puts out such low amperage anyway. I did a demo video showing that here www.loveyourrv.com/7-pin-tow-cable-charging-tests-using-lithium-rv-batteries/ Cheers, Ray

@brentmcmahon8188 11 месяцев назад

I think my Renorgy 40 amp dc to dc charger for my Bigfoot truck campe with 2 Battleborn lithium batteries

@evaquiles46 4 года назад

Great video! Very informative!

@jimknibbs7152 3 года назад

Thank you for taking the time to answer all these questions. Most of mine were answered as I read them all. I have one I didn't see though. I want to install this in an extra plastic battery box next to the one my single battery is located. What do you think of that. I would like to do this as my trailer is small and I don't see a good spot to locate it inside and have to drill a hole through wall or floor of trailer. Thank you for making such an informative video on this subject.

@LoveYourRV 3 года назад

You are welcome! The only thing to be wary of if you put it inside a box is ventilation. When the DC-DC charger is working hard it gets hot, it has a fan inside and a metal case for cooling. So depends on the size of the box and the temps you travel in and if it has some openings for airflow. If the box is too small and sealed up tight the charger could overheat or have a reduced life span due to the electronics always running hot. Cheer's Ray

@garyswitzer6867 3 года назад

@@LoveYourRV Well there's a nice way to keep the Li batteries "warm" if traveling in really cold weather when charging is needed! Locate that DC-DC into your batt. box; you have opening cutouts enough I bet or add one more up high. Then once parked, stuff closed batt. box openings to hold that heat in for awhile. Free heat is free heat!

@michaeldoherty2289 3 года назад

@@garyswitzer6867 Tat is an excellent idea but you still have to make sure there is enough ventilation to keep the DC-DC unit from overheating. It may be a difficult balance to find.

@KRich408 2 года назад

Just found renolgy has a unit upgrade from this one a lot simpler to install and smarter, it has a DD-DC and Solar Charge controller in one unit to protect your batteries from the Vehicle and Solar power. DCC50S 12V 50A DC-DC On-Board Battery Charger with MPPT

@LoveYourRV 2 года назад

I already had a separate solar charger controller so I went with the cheaper standalone DC-DC charger, not the combo unit. Personally, I'm not a fan of products that do multiple things in one package. If it quits then you lose two charging methods. Cheers, Ray

@andyjones611 4 года назад

You`re ready for the end of the world my friend period! Nice install i am impressed by all your system .I need to update if i want to keep up . Your drawing by the way is nicer than the new silverado HD i mean its really ugly. Cheers kept up the good work

@joecool509 4 года назад

Great for using a LA charger to LIPO battery without replacing the charger.