DIY RV LiFePO4 Battery Upgrade || 510Ah 12V Battery Bank

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Read: All parts shown in the video are listed in this description!
In this video, we cover completely, from start to finish, how to install a set of LiFePO4 cells into an RV. We cover from selecting the proper BMS based on your heaviest loads, securing the cells, properly configuring bus bars, and how to wire everything up!
#RV #RVLithium #BatteryUpgrade
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✅ My Top Pick LiFePO4 Batteries by Voltage & Capacity: 🔋
1️⃣2️⃣V Batteries: 🔋
▪️ Epoch Essentials 105Ah Battery - www.currentcon...
▪️ Epoch Essentials 300Ah Battery - www.currentcon...
▪️ Epoch Essentials 460Ah Battery - www.currentcon...
▪️ Epoch Pro 460 Ah Battery - www.currentcon...
▪️ EG4-LL 400Ah Server Rack Battery - www.currentcon...
2️⃣4️⃣V Batteries: 🔋
▪️ EG4-LL 200Ah Server Rack Battery - www.currentcon...
▪️ EG4 LifePower4 200Ah Server Rack Battery - www.currentcon...
4️⃣8️⃣V Batteries: 🔋
▪️ EG4 LL-S 100Ah Server Rack Battery - www.currentcon...
▪️ EG4 LifePower4 100Ah Server Rack Battery - www.currentcon...
▪️ EG4 Indoor WallMount 280Ah Battery - www.currentcon...
▪️ EG4 PowerPro Outdoor WallMount 280Ah Battery - www.currentcon...
✅ My Top Pick Inverter/Chargers by Voltage: ⚡
1️⃣2️⃣V Inverters: ⚡
▪️ Victron 12V Quattro-II 3kVA 2x120V - www.currentcon...
▪️ Victron 12V MultiPlus-II 3kVA 120V - www.currentcon...
▪️ Victron 12V MultiPlus-II 3kVA 2x120V (UL Model) - www.currentcon...
2️⃣4️⃣V Inverters: ⚡
▪️ Victron 24V MultiPlus-II 3kVA 2x120V - www.currentcon...
▪️ Victron 24V MultiPlus-II 3kVA 120V - www.currentcon...
▪️ Victron 24V Quattro-II 3kVA 2x120V - www.currentcon...
4️⃣8️⃣V Inverters: ⚡
▪️ Eg4 3000 EHV-48v Inverter/Charger - www.currentcon...
▪️ EG4 6000XP Off-Grid All-in-One Inverter/Charger - www.currentcon...
▪️ MidNite Solar Rosie 7048RE 7000W Inverter 120Amp Charger - www.currentcon...
▪️ MidNite TheOne - 11.4kW Hybrid All-in-one Inverter - www.currentcon...
▪️ EG4 12kPV 48V 8kW Hybrid All-In-One Inverter - www.currentcon...
▪️ Sol-Ark 15kW All-In-One Hybrid Inverter - www.currentcon...
▪️ EG4 18kPV | 48V 12kW All-in-One Hybrid Inverter - www.currentcon...
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FTC Disclosure Statement:
Some links on this RU-vid channel may be affiliate links. We may get paid if you buy something or take an action after clicking one of these.

Опубликовано:

25 сен 2024

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Комментарии : 123

@RobertWiggers 3 года назад

You can notice a lot how much more effort you guys put in filming every vid. It's getting better and better.

@HighTechLab 3 года назад

I'm patiently awaiting the Panasonic GH6's coming out. We stopped using our Canon 80D because Jarrett's Iphone 12 pro MAX was SOOO much nicer. We also just built two new editing rigs for Jarrett and I, because he is great at color grading and making things fancy, but is not totally up to speed with multi cam editing. We are both a bit OCD when it comes to our video and we were both quite happy with this one!

@toroddlnning6806 Год назад

If you put the battery together like this I saw a video where they said cell one, or mby it was cell 4,, would charge and discharge alot more than the other cells making it wear out faster. If you put four batteries in series, group of 3, you can connect all three packs to a busbar, all negatives to one bus bar and all positives to another busbar, in parallell, and charge/ discharge at a much closer lvl. But i think you would need three bms, one for each. But this again would drain the first cell in each pack faster than the other cells, so im not sure what to think.

@toroddlnning6806 Год назад

the best would probably be to onnect all of them in parallell, creating a huge 3.4v battery, using onne bms and one bussbar for all positives and one for all negatives.

@jasonbroom7147 3 года назад

This was an excellent video with very good information, clear instructions, and the production quality is far better than most. In fact, it was so good that I was surprised by one thing you didn't do. I honestly thought you would put some kind of barrier in-between the main positive and main negative terminals. With the configuration you chose, you have a very large amount of current terminating VERY close to one another. You mentioned dropping a wrench in there, but since those are so close together, a piece of metal just 3 or 4 inches long would cause a serious problem. I would place a piece of thin cutting board material in-between the cells and also cover the bus bars that are connected to your main positive and main negative terminals.

@kimmer6 3 года назад

I drilled and tapped my bus bars for 8-32 screws 3/8'' long. They come from underneath the bar and provide a nice stud for the little red 16 gage ring connectors that actually fit the BMS wires. The battery terminals are all as tight and undisturbed as possible without having those weak soft ring terminals attached. At one time I tried active balancers and the 8-32 posts were so handy.

@trevortrevortsr2 3 года назад

Two things I would definitely add to your set up - a DC to DC charger like Renogy set to the Lifepo4 setting & i would have fed a marine type fuse box as a distribution panel

@HighTechLab 3 года назад

I know for a fact we will be doing upgrade soon but I'm not sure why you suggest adding the DC to DC charger

@trevortrevortsr2 3 года назад

@@HighTechLab There are two issue with crude split chargers used to charge Lithium - the first is the lithium will take all the charge your alternator can dish out when empty and lead to premature alternator failure - the second is as the lithium fill the charge will drop off - its unlikely to ever fully charge which means it wont top balance - a DC to DC charger will take whatever voltage arrives as long as its at least 8volts and charge you batteries with a bulk and then constant voltage charge filling them completely and letting them balance - Lithium batteries don't like trickle charge - it will also stop your alternator being overloaded by capping the demand - think about it charging your lithium with a lead acid profile at the end of a long cable and its associate voltage drop is never going to match your packs needs

@trevortrevortsr2 3 года назад

@@HighTechLab Watch this guy explain ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-P6poRPUMKTI.html

@jdarst100 2 года назад

Not a good idea to wear rings while dealing with high current possible injury. This was a great video and I appreciate the time you took. Thanks

@randyheckman3733 2 года назад

This is a really good video that deserves way more attention than it has received. Solid work, great explanations!

@blfjr2005 2 года назад

I enjoyed the video, on my battery bank I coated the wood with the brush on flex seal in a can, it is very grippy and sealed the wood.

@jerryc7016 3 года назад

Nicely done. Instructions were easy to understand.

@thomasmills192 3 года назад

im afraid to ask questions because (like most) I really don't understand batteries at all, I just know the higher the numbers the higher the cost, it seems like liquidation companies that usually sell the raw items in bulk have tightened up on their deals because of people like yourselves telling the public how to build top of the line battery tech for a fraction of the cost, so they make materials more expensive to cover their losses, I guess ill never fully grasp the concept but your videos are precise and straight to the point, that's easy to follow

@coreybabcock2023 Год назад

Yep jumping the BMS gets the charger going I used a 12 v halogen bulb for doing it it's like a resister

@jasondevine6014 2 года назад

Really should be wearing safety glasses with battery builds. Has saved my eyes on at least 1 occasion.

@stevelamperta865 2 года назад

Well when you work on projects like this wear your safety glasses , and mind your own business !

@MikeHarris1984 3 года назад

Not gunna lie, when you heat shrinked that strap, that turned out real nice! lol.

@davestech6357 3 года назад

Lighter fluid works well for removing the adhesive and does not harm most plastics, It contains Naptha and is available at hardware stores. I would have used high density foam under the batteries and strapped them down instead. Fit form and function all looks good enough for what you have. Good job and very informative.

@coreybabcock2023 Год назад

I was able to set my daly BMS to 600 amp discharge and it did it !

@jakeandrules7724 3 года назад

If those are aluminum buss bars and terminals, which i think they are, need some nolox or oxide inhibitor for long life good contact.

@mattg8787 3 года назад

and with them being aluminum his going to be loosening power to

@anicetomaldonado 3 года назад

Yep. They're aluminum

@stevelamperta865 2 года назад

@@anicetomaldonado You didn't know they tin coat copper buss bars ??? That's why they look like there aluminum !

@fathergratwick 2 года назад

@@stevelamperta865 sometimes they are aluminum as they are in this case.

@claesmansson9070 Год назад

I never glue cells together, I compress for an additional 1000 more cycles!, that way I use my own cells too!

@coreybabcock2023 Год назад

VHB tape I was told will let loose in the Florida weather

@daviddrew4022 Год назад

Hi. Great video. What batteries/controller do you recommend for this now in 2023?

@fathergratwick 2 года назад

With such a nice batttery bank you really should consider mounting some solar panels and a carge controller at this point as they will actually extend the life of you lifepo cells with this type of use.

@JesseChoupique 3 года назад

Excellent video. Stupid question for you...The BMS only has 4 positive leads. This means that you are not monitoring individual cells. You are monitoring a group of cells that equal about 3 volts. Yeah? How does the BMS know if 1 cell in that group of 3 is more or less charged?

@HighTechLab 3 года назад

All three cells in the group will be at equal charge. If for some reason one cell goes bad you will see the whole group drop off and then you can take further steps from there.

@inetblue 3 года назад

I had the same question; not stupid.

@jamesmason7124 3 года назад

Nice work the only thing I noticed is that your bms leads should all be the same length. Keep up the good work and stay safe and charged

@karl5tewart 3 года назад

Not necessary. The balance current is so insignificant that there would not be any voltage drop along their length, and therefore any voltage readings taken at the BMS end are identical to the actual cell voltage, and therefore perfectly valid.

@PaulBodyBuilder 2 года назад

U could use wooden paint stir to put in between batteries

@wenhaowong5549 3 года назад

i think top balancing is still needed for LFP, 3.2v cannot be justify the capacity inside, it can be a huge different in capacity. previously i build a 48v 200ah LFP battery bank, and i think i dont need top balancing as all cell seat across the same voltage range, but when i connect the charger (56v 100a) , there were few cell voltage rise very quick as the capacity is different with other cell, so the BMS has to cut off the current to protect the battery. i have to leave the battery pack for few days (or dissemble the pack and proper top balance it) to let the BMS slowly balance it. If i do top balancing at the beginning, then this scene will not happen.

@HighTechLab 3 года назад

I'm going to follow this up in the next video because the bank is in and running and I can show fully charged voltages.

@wenhaowong5549 3 года назад

@@HighTechLab maybe low ampere charging is OK, I charge with 100amp charger, the voltage rise very fast at the end of the charging curve.

@karl5tewart 3 года назад

Totally agree with these comments Wen. 3.2V on all cells really doesn't tell you anything about the state of charge of them. And I think the suggestion that the balance feature will even them out is slightly misleading. Doesn't the Daly only balance when charging (or above about 3.4v)? So you'd have to charge the pack, but not at a rate that exceeds the max balance current else the higher charged cell will go over voltage. Really don't see the point of piddly balance currents, can't see that they really achieve anything. Much better to top balance before hand, or use active balancer that can balance in the order of 2A.

@wenhaowong5549 3 года назад

@@karl5tewart yes, Daly only start balancing when charging, luckily I use JBD Bms which able to start balancing the battery in any condition. Personally I would avoid to use Daly BMS.

@karl5tewart 3 года назад

Yeh, I'm going with JBD also in part for that reason, although still not convinced about passive balancing. But my loads will be very small (RV) so suspect not likely to have divergence of charge state, plus I will top balance before, and savvy enough to keep an eye on it through its lifetime.

@Sylvan_dB 3 года назад

I use vinyl electrical tape in 1-1/2in wide to cover the bus bars and battery terminals. Next time I think I'll use kapton (polyamide - yellowish transparent) in 2in wide as the vinyl tape tends to unstick and curl up. I saw one project where bicycle inner tube and zip ties were used as covering. I strongly recommend *something*, even just some duct tape would be better than leave that much high current potential exposed for the next "Oops!" to happen.

@HighTechLab 3 года назад

True, but at the same time I also remember that the old lead acid batteries had exposed terminals for years and never had a problem

@brianvandy4002 3 года назад

LiFePO4 batteries are temperature sensative. You should insulate that compartment a bit and maybe put something for supplemental heat in case it gets cold, like a 100w light bulb or a heating pad under the batteries.

@TurboAdam 3 года назад

Which of those tiny cables handles the 200-250ish amps to the starter on the generator??? Trailers are so incredibly under-wired from the MFG’s!

@HighTechLab 3 года назад

That would be the negative going to the frame. The positive is significantly larger and is that large black wire

@claesmansson9070 Год назад

I just throw busbars out, and make my own a little too long wire connections for flexibility

@davidpatrick1813 2 года назад

"Crescent" is a "brand name" ... so I call it an "adjustable". It is a very well made brand.

@jalpa9642 2 года назад

I'm a bit at a loss here..... You have 4 blocks of 3 Cells @ 3.2 volts each... Isn't that 3 times 3.2 volts = 9.6 volts total for each Block...? I watched your other video where you made 1 - 12 volt battery using 4 Cells of 3.2 volts because 4 times 3.2 volts = 12.8 volts... that I understand....! 9,6 volts times 4 Blocks = 38.4 volts....? Where did you loose me...? =)

@coreybabcock2023 Год назад

Just splurged on this daly BMS paid 114.00 on Amazon should get it by the 24th I plan on replacing the BMS in my 200 ah plus ampere Time battery I already opened the case on the battery and yes they use a decent BMS but I want better control and monitoring plus low temp cut off so I can keep the battery in my camper van and not worry about ruining the 100 ah prismatic grade A caleb cells

@dennis_m 2 года назад

Thanks for the really detailed video. I am worried though that you may have been sold used cells. Those cells look like Lishen 202Ah, isn't it? And it has been rewrapped and I can see that the manufacturer's laser engraved QR code is hidden under those reseller QR stickers. When purchasing, please don't forget to check manufacturer specifications and QR to confirm. A lot of used cells with degraded capacity are sold now a days as Grade A, it's unfortunate. Thanks.

@coreybabcock2023 Год назад

The series connection should have been the middle cell not the end one if you know what I mean it would evenly distribute the current

@davidsamson2662 Год назад

a bunch of your items are not available..... or not exist yet in your link... do you have any suggestion ?

@brianvandy4002 Год назад

I'd also say, you should put something under the wood or any wet roads are going to soak your plywood.

@halheiner8065 2 года назад

Thank you for this most helpful video. For an RV application, are flexible bus bars necessary to protect terminals from stress potentially caused by vibration and temperature variation? Also , I am wanting to place cells on their wide side and 4 high due to space consideration.

@wd9dau 3 года назад

You should take off your ring when working with high amperage batteries!

@HighTechLab 3 года назад

It's a snug fit, and in hot weather I guess my fingers swell ever so slightly so it's extremely difficult to take off, super painful. The next size up is super loose so it's a tough call on what to do....I guess I could wrap it in electrical tape, but oh man I can already hear the youtube comments for that!!!

@wd9dau 3 года назад

@@HighTechLab Then you should cover it with tape. If you get that across the power terminals you will never wear a ring on that finger. I have seen this happen and it’s not pretty!

@Stefan_Dahn 3 года назад

@@HighTechLab Smoked finger is not that great as smoked ribbs. 😉 Take care! 🖐️

@TheAndy19701970 3 года назад

Nice setup, I like your video a lot. So it has been 2 month, is the system working good?

@SuperVstech 3 года назад

I am concerned that you installed the raw bussbars on the terminals without brushing or filing the surfaces and treating for oxide protection. Aluminum is AMAZINGLY fast at oxidizing which leaves an insulating layer. I like to use a stainless steel bristle brush and noalox or similar.

@stevelamperta865 2 года назад

They tin coat copper buss bars for this very reason , Are you certain these are aluminum buss bars ? I don't believe any battery manufacturing company sells aluminum buss bars !

@SuperVstech 2 года назад

@@stevelamperta865 tin plated bars have a different sound, and color. I am fairly confident they are aluminum bars. Aluminum bars are common, as the terminals are also aluminum, so no dissimilar corrosion, but cleaning the surfaces and treating for oxidation are needed.

@claesmansson9070 Год назад

Ok, no bms conn. on every single cell ?

@saidt.8200 Год назад

The caveat is that the BMS monitors a block of 3 cells as one. There will be no way of knowing of the 3 cells are balanced or not. I assume you already testing and experimented with them individually and you are confident all the cells are healthy with very similar internal resistance. If one of the cells chargers slower or faster than the others you will have a overall lover battery capacity than what you would expect.

@gonzalez7805 3 года назад

How are you able to get 12 volts from a 3 battery configuration? Im used to seeing a 4 battery configuration .

@HighTechLab 3 года назад

3 batteries are in parallel for 3v and 170ah. 4 blocks of 3v are put in series to make 12v.

@gonzalez7805 3 года назад

Nice

@coreybabcock2023 Год назад

Wish I had the money to get these batteries

@truckerzwyf 2 года назад

Can't figure out where the links are to your products shown. Can you help?

@moviebestmusic2806 2 года назад

main positive and main negative should separate in a long distance, in your configuration if you dropped a screw on top,you're gonna have a show

@BlakeConnor 2 года назад

I’d be putting a fuse block on the positive side

@mfemer 3 года назад

Your clamp-meter was on "min" with 246.1A. What was the "max" value??

@HighTechLab 3 года назад

The max value was around 2 amps. I had the clamp in the wrong direction but it would have been quite difficult to see if I put it in the proper direction. The only difference is the current was flowing in the opposite way hence why the min value is what I used.

@davidpatrick1813 2 года назад

Seems to me the "vibration" of the cells on the wood could be an issue...

@matthewknight5641 Год назад

What about compression???

@Bripromo 3 года назад

Hi,does this batteries or BMS got any internet connection from BMW to inverters like the ( sol ark)?

@John-brc20 8 месяцев назад

Nice video

@davidstokes3512 3 года назад

what size array would you recommend for use with this battery

@allynonderdonk7577 Год назад

Danger of explosion with install. The reason you have a wire floor in that compartment from the manufacturer is that it shares a location with the propane tanks, Propane drains down when it leaks out. You jsut plugged up 95% or maybe more of that capability. I couldn't tell if there is a wire floor in the propane portion or not, but you just killed a good bit if not all the safety margin.

@inetblue 3 года назад

If you build a 12 Volt battery using 280AH cells, and then wire several batteries in series, how many can be in the battery bank before 4/0 wire can't handle the Ampacity? At some point, do the batteries need to be wired in parallel, i.e. 24 Volts, in order to keep the Amps lower?

@BillyGrayNC 3 года назад

If you wire them in series the voltages will sum, i.e., two 12V 280AH batteries in series will be a 24V 280AH battery or four 12V batteries in series will be a 48V 280AH battery. If you wire them in parallel the voltage will stay at 12V, but the capacities will sum, i.e., two 12V 280AH batteries in parallel will be a 12V 560AH battery. The cable capacity doesn't just depend on the gauge of the wire, but also the length of it, you have to consult the tables.

@inetblue 3 года назад

Seems like a lot of folks are just going with Lithionics in their RVs. I'd like to build my own as you demonstrated. Is the quality of Lithionics that much better to warrant the $?

@jamesmason7124 3 года назад

Just build your own batteries, you will be more happy and save a lot of money plus you can use the bms that you want to use. I hope this helps

@davidpatrick1813 2 года назад

How is it all charged up?

@thierryjanot1611 3 года назад

bonjour 4 fois 170 égal batterie de 680ah ? merci

@ShenZhenDigiCasting 3 года назад

up to 96S LFP and NMC BMS

@matthewknight5641 Год назад

Nice cells tho

@esiakaharding9124 3 года назад

very good

@stevelamperta865 2 года назад

One should go to factory specs for information on compression ! With the cost of these cells I wouldn't take someone's opinion about this !!!

@AnyManProjects Год назад

Those original wires are so small!

@jakeandrules7724 3 года назад

How much heat comes from the Fet' on the BMS under a good load?

@bashaaksema94 3 года назад

Maybe its in the datasheet of the BMS otherwise you would have to take it apart and look at the fets

@Stephen2846 3 года назад

Aluminum buss bars. You need to clean them and use an anti-oxidant compound on them or your going to have oxidation issues; that's not good.

@stevelamperta865 2 года назад

Tin coated copper buss bars ! I don't believe any battery manufacturing company sells aluminum buss bars for DC applications .

@Stephen2846 2 года назад

@@stevelamperta865 "Aluminum buss bars" are literally in the description. Here is the company who made the "ALUMINUM BUSS BARS" in the description: www.currentconnected.com/product/ea-bb/ It doesn't matter whether the current is AC or DC, aluminum is simply a conductor that requires a greater cross section in order to carry the same amount of current safely, and it oxidizes much quicker. Hence, cleaning aluminum conductors and then applying an antioxidant compound in order to retard oxidation. You wouldn't "Tin" copper buss bars unless you were going to solder to them and there's no real reason to do that.

@thierryjanot1611 3 года назад

bonjour j'ai le même projet mais je comprend pas trop car 4 modules de 3 cellules devrait faire 680 ah? merci

@fabriqueenfrance.8063 3 года назад

Et moi je pensais que pour faire du 12v il fallait 4 modules de 3.2 v, en effet lorsque l'on regarde les vidéo les batterie 12v sont toujours par 4 modules et non 3 qui ferai du 9.6v

@thierryjanot1611 3 года назад

@@fabriqueenfrance.8063 Oui bien raison . Et l'oiseau il répond pas lol

@s.v.gadder1443 2 года назад

Not that it'll be the end of the world but your balance leads should have all stayed the same length as resistance Will change and effect final voltage slightly.... j.s.