BTW. the green led information: The blinking green LED is just showing that the charger is in the Optimization portion of the charge. This can last for up to 48 hours. it happens right after the initial charge is complete, and anytime during Maintenance when the charger is 'topping' the battery off. This is a low current trickle charge that fully saturates the battery, repopulates the ions to the plates, and mixes the electrolyte bringing up the specific gravity. A good analogy is it's like pouring a beer into a glass. You fill the cup and then have to wait for the foam to go down before you can pour more beer into the glass. Then let the foam settle and you can add a little more, and so on.
I hooked this up to a battery I've had sitting for almost 2 years, and it's been blinking slowly for almost a day now. Good to know that it's normal. I wasn't sure if maybe I had to do the repair or not, because it had been blinking for so long. Anyhow, when it's fully-charged and I can use it, the green light will have finally stopped blinking and just stay solid, then? The other lights will turn off?
I just want to say kudos to this man for answering so many questions .. you don’t often see that on videos like this. I’m looking into purchasing a pulse charger to revive a battery that I know is below 7volts and I saw, on another video, that while other chargers may not start the process if the voltage is too low - this one will. I also like that it can also do a trickle charge so it’s very versatile. It does cost a little more than the others but it’s worth it, to me, not to be concerned that I’ll get the charger and end up having to return it because it wasn’t able to detect my battery.
You failed to mention that in 12 volt Repair mode the battery should be disconnected from the car because in this mode only the charger can damage car electronics systems. It's in the fine print in the manual.
Yep, thanks for the good info! Also, the manual recommends completing a full charge first before using 12V repair mode. This mode should take 4 hours and should only be done on flooded type only.
@@eddiedefro I have checked with Noco and this is incorrect. "The 12 Volt Repair feature is for 12 volt Wet, Gel, MF, and AGM batteries only" So not only wet batteries as mentioned but AGM AND Gel can also be repaired.
When you say "disconnected from the car" does that mean both positive and negative terminals disconnected? Or can I just disconnect the negative terminal only?
Just bought mine yesterday , one thing though , at 2:12 you say the clamps are solid copper , they are not , they're just copper plated steel , easy to test with a magnet .
Had AAA come out and replace a 5 year old battery in a Lexus that hadn't been driven much. The car was only driven about twice a month after that and one morning the battery was dead, as in no interior lights, no blinking security light on the radio. From what I hear, "not driven enough" won't get a warranty replacement. Bought the Genius 5 on Amazon, hooked it up, normal charge, not repair, and 24 hours later the car started right up. It's been fine since. Maybe the battery had been sitting on a shelf for some time.
Be careful using chargers that charge at more than 15 volts on AGM batteries such as the Odyssey's, etc. Higher than 15 volts will cause irreversible damage This Genius charger uses 14.8 (according to the manual), not sure if this is a little too much for AGM's but it is a much better charger than most of the other junk being sold. Read the Odyssey battery manual for charging. These AGM batteries have thinner lead plates which allow more to be packed into the same size case as standard lead acid batteries, which is how they get a higher density battery in the same case (more surface area), but these thinner plates are more prone to warping and even melting because of the higher heat from high voltages. Read AGM battery charging specs. AGM's should be charged with current while limiting the voltage. Odyssey's love higher current charging, not higher voltage. (read the charging specs). 13.6 to 13.8v is ideal for float charging (trickle charge). Look for chargers that use high frequency to desulfate AGM batteries, not high voltage pulses.
I have this charger and for the first few months (arbitrary, was taking detailed notes) it worked fine. This included switching out of "maintenance mode" and recharging the battery when loads were placed on them. My shunt would record essentially 0 amps when in standby and when I applied a load I could see the - amps for a while and eventually I would see + amps (varied based on load but the math was always "load - 5amps" as expected) as the charger sensed and began to replenish the battery. If I were plugged in and using loads my battery was basically always at 100% per my shunt indicator. And then I noticed when checking the battery monitor that it was at 90%, or lower depending on how long since I checked. Long story short, the charger would not come out of "maintenance mode". Unplugging and replugging would initiate a complete charge cycle back to 100% at ~5amps. But then the same failure to come out of "maintenance mode" would result. This is on a LiFePO4 100ah battery. I now have a heater assembly on the battery that draws DC power from the system as needed to maintain greater than 40F. The battery BMS has a cold temp cutoff circuit which was activating a few overnights before I had a chance to install the heating system. I see nothing in the Noco manual about this interfering with the charger sensing circuitry. Do you have any insight on this phenomenon? I've spoken with tech support and made no progress beyond offering to take my unit back to se if they can duplicate. In the meantime I've purchased a different charger but have not installed it yet. I'd rather not use that style charger as it is more of a hobby/workbench charger and not "designed" as a 12vdc battery system charger. I have high regard for the Noco brand but I cannot figure out why this is happening, beyond a glitch in the microprocessor and/or sensing programming.
Someone else here said that maintenance mode can last up to 48 hours before going solid green? Mine is currently pulsing, and I don't want to try repair until it comes out of that mode. It's only been on for about 6 hours (just bought the charger today).
I bought a NOCO GENIUS5, what I sort of ran into is that it seems a little finicky around set up. So basically what seemed to happen is I set it up, plugin, select the the setting for the battery. I see it is at 25%, I come back the next day(2nd time) and it is still at 25%, which seemed suspicious, so I unplugged it, re-set everything, plugged it all back in using the cigarette lighter entry point. Everything looked right to me 1st, 2nd time with correct indicators to charge battery correctly. Same thing next day, I come back and still at 25%, so I repeat the setup again (3rd time), shoved it all back together, re-set to the normal battery setting. Frustration up two notches, I walk away. Now on day 3 the battery is solid GREEN and all charged back to normal fully charged. My gut feeling was somewhere in the works with the cigarette lighter plugin maybe not fully seated electronically. So it feels like 1) you better check on it after setup, 2) make sure everything is seated and connected good and tight 3) repeat if anything seems suspicious. I would not call this set it and forget it, keep an eye on things don't assume it can sense correctly what all is going on or pulse its way to success if connection is not solid. I doubt I would have had this had I connected directly to the battery terminals but I didn't want to go that route in a Porsche 997 where the battery is in the frunk and I would have had to leave the hood cracked open for the cable or come up from underside of the car snaked into frunk somehow which seemed like more pain than it was worth doing when the cigarette port is easily accessible. Any thoughts or comments appreciated. Is there a different approach to insuring a solid lock down on the 1st try.
Normally if the connection was not solid the charger would let you know - it will either error out or not engage the charging cycle at all. Have you tried the charger with the cig adapter on your everyday driver to see if there is an actual issue with the cig adapter itself?
@@HighTechBatterySolutionsInc no I didn’t try it in my daily driver, but that was definitely on my list of trouble shooting ideas as a next step, once I got the green light it saved me in a sense from that next trial step. It seems like even a small fraction of diameter difference could lead to a poor connection even though I am sure there is a known standard diameter but maybe in Europe their diameter is in metric and maybe the plug side was based on SAE diameter and it would mean carrying the match up out to at least 3 decimal places to get a snug fit. I am not sure exactly but you definitely need a good strong contact. I could clean the surface with some steel wool or maybe a thin piece of copper sleeve or small square to insure a snug fit first and every time
@@HighTechBatterySolutionsInc update: so I go check it again, this time the Noco Genius5 says bad battery. I disconnect and attempt to reset it. However, now the Noco Genius five won’t allow me to make any battery type setting in fact the only lit button is the on/off , so I called Amazon, they sent me a replacement it has a 90day warranty. I sent the old one back to Amazon. The new one comes, I plug it in, after 5min it reads 50% and next day green and at 100%. I guess the one I received originally was defective. I just went with my gut that the battery was not bad since it would start the car. Not sure why the first unit was malfunctioning but there it is, mystery solved.
This Genius 5 beats the G 3500 hands down. More automated. Temperature stability. And allegedly safer. But always wear safety glasses when working with car batteries or and rechargeable batteries. This is a very cool looking piece of tech also. That is something important to many tech lover's..
Thanks for the presentation. One thing that is not clear is if the battery should be hooked up first before connecting the charger to a power source. I would think it be so, but does it matter if the sequence is reversed.
I believe the directions say you should connect the battery first and then plug the charger into an AC outlet. We don't do this at our shop - our chargers are always plugged in 24/7 and we rotate batteries on the charger without an issue.
Could you review it in more details, like, use a multimeter to monitor the voltage change from standby mode to force mode? for me, when it is standby, this charger output 16.5v in pulse every one or two seconds, and the force mode always ouput 19.6v which is super strange.
Is this useful for jumpstarting discharged batteries? So for example cars you haven’t used in months (particularly during the pandemic). I had to get someone’s help to jump start my car with another battery when my car would no longer start (even if the battery was less than a year old). Could this device be used in those situations rather than having to jumpstart the battery the old fashioned way?
This is going to be strictly a battery charger. It can charge a battery that has been drawn down to zero volts but it will need to be left charging the battery for some time in order to successfully start the car if the battery was flatlined.
Thanks for the review. I just got a Gen 5 to try to bring the 12V battery in my 2019 Honda Clarity back to life. It went dead from prolonged disuse during lockdown. I wasn't sure what mode to try but went with 12V (the first one) since I couldn't find any info saying my battery was a different kind. It failed to charge on the first try, which was not unexpected. I then tried force mode. After 5 minutes of LEDs blinking as expected, instead of entering regular charge mode it started a pattern of LED blinking that was not in the manual or anywhere else I could find. The 12V LED (the first one) blinked fast a couple times, then blinked in unison with the 25% charged LED. Once those two were blinking together (slowly), they would alternate with the standby LED blinking. So the blinking pattern was 25% plus 12V, then standby, repeat, with an occasional solo flash of the 12V LED mixed in. Do you have any idea what might be going on? I don't know if there's something special I don't know about since my vehicle is a hybrid, if I'm doing something wrong, if this relatively new battery is beyond help, or if my Gen5 might be defective. (To be clear, it is only the "regular" 12V battery I'm attempting to charge, not the special batteries that make the vehicle a hybrid.)
I did not figure out what the undocumented LED pattern meant, but I accomplished my original goal by disconnecting the car's clamp from the negative terminal and trying again with the Gen5. With that set-up, the 12V battery charged as expected and pretty soon I was able to reconnect the negative terminal clamp and start the car. I didn't top off the battery yet because I was impatient to drive, but it's good to know I can if needed.
@@marcusmonkeyman6907 I think the problem may have been your car itself drawing on the battery while the charger was attempting to put amperage into it. I was waiting on NOCO's response to this light sequence, and the overall answer was that your battery was having a very tough time retaining a charge. If you disconnected the negative clamp and then the battery went through the charging process I would imagine that your car has a decent drain going on.
Does anyone know what the optimization mode does in the noco charging cycle? Mine seems to take 48 hrs+ to come out of the final optimization mode to fully charged..
This unit is strictly a battery charger and will require it to be plugged into an AC outlet in order to charge a battery - this is not a jump starter. If you are looking for a jumps starter I recommend taking a look at the NOCO GB40 series.
I bought a Coco Genius 5. It worked fine 8 Months-until this evening. I had a Firmenich Battery I bought through Amazon-2 of them I fact, 13 Months ago. ONE of the Batteries developed an internal resistance issue, and I cannot repair it. I tested it with my NOCO Genius 5 Charger. It DID take the battery from 13.0 up to 13.7 Volts. As I was looking at the system, it dropped in a flash back to 13.0. In the process of this happening, the internal resistance of the bad battery caused a power feedback, DESTROYING my NOCO Charger! I thought the "Smart" circuitry in the charger was supposed to PREVENT this from happening! DO-NOT-BUY!
When I charge my battery it goes from 25% to flashing green in about 20-30s. On all the batteries I have tested on. Is there something wrong with the charger? One is a new battery while the other are a old battery.
It depends on the charge level and the size of the battery. If the batteries you are using the charger on are already near fully charged then the charger will reflect that in its indicator lights. If the batteries are too small for the charger, lets say a 10AH power sport battery, then the charger will move the blinking green light fairly quickly and remain there for a time until it fully charges the battery.
I recommend leaving the battery in the vehicle to charge if possible, its far safer to charge the battery outside rather that inside your house. Flooded batteries will gas when charged, AGM batteries are safer however can also gas if they developed a short.
Hey, I just got this bad boy and the charger is SUPER hot. Is that normal with battery chargers? Never had one before. Honestly, it's SO hot I feel like it's going to melt my flooring. Also, my battery was at 50%, but it's been on the first bar for the past 2 hours... Help!
I ran your question past the techs at NOCO, here is the response: Both the battery and the charger may get warm while charging, but neither should get so hot that you could not comfortably lay a hand on them. Based on your customer's description, it sounds like the charger is getting too hot. Possible reasons for the charger and battery getting hotter than they should include if there is a large draw on the battery while it is charging, or if the battery is bad. The GENIUS5 has a 3 year warranty and we would be happy to inspect the customer's unit and replace if faulty through the warranty.
@@matusbenkovsky9922 I'm assuming it's a deep cycle golf cart battery - they are rated between 185 up to 235AH worth of capacity. It could take some time to charge - I recommend leaving the charger on and letting it do its thing. You will see the charge indicator move forward as it should, it will just take more time to do so.
I bought it on Amazon and received and installed yesterday. The one I received was in much large box and it didn't come with any battery claps. Did they stop including them? The installation was super easy.
Do you know if I have to disconnect the Car's Battery Leads to use this Charger? Or can I literally pop the Hood and connect it up (with the Car's Leads Battery still connected)?
Pop the hood open and connect the charger. There is no need to disconnect the battery from the vehicle - the charger will not damage any of the computer systems.
Is it also safe to use the battery repair mode with the vehicle leads still connected to the battery as I’ve heard the pulse can damage computer modules?
So if green led is on it means its fully charged ?? Because mine is blinking on green !? Is it charged or do I wait until its solid green and won't blink ?
If the Green LED is blinking then the battery is 90%+ charged on its way to fully charged - leave the charger on the battery until that LED is solid to get the battery to 100% fully charged.
yes, you can disconnect the charger at any time if you need to and reconnect later to finish out the charge cycle. The charger will go back to its first stage of the charging process initially but it will work through the stages quickly to catch up to where it was prior to the disconnect assuming nothing has changed with the battery itself.@@RightlyDivide365
Great review. Will this charger be sufficient to charge/maintain standard sedans such as Lexus and Honda? How is the GENIUS10 compared to this GENIUS5 (for example, what additional features on the 10 would warrant twice the cost on Amazon? And is it really needed?). I saw that your channel also reviewed the GENIUS10 review as well. Thank you.
The GENIUS5 will handle any car battery without an issue for both battery charging and maintenance. The only true difference between these chargers would be the charge rate - the GENIUS10 at 10 amps and the GENIUS5 at 5 amps.
You can leave the battery connected to the vehicle however keep in mind this is not a jump starter. NOCO does not recommend starting the vehicle while the charger is connected to the battery.
I need to leave my car at the airport for a few days at a time in -15 to -30 C temps. My particular model is notorious for parasitic draw while parked so I would like to hard wire this and plug it in while I am away at work. I don’t want to have to pop the hood and hook up the clips every time. Is there any issue with running the vehicle while it’s wired? I assume the electronics will protect it if it’s just in maintainer mode?
You can start the vehicle with the charger hardwired without an issue as long as the charger is disconnected from AC power. Keep in mind that the NOCO GENIUS series needs access to AC power in order to charger your car battery, so in a majority of airport parking garages I've been in there was no access to power. That being said you can hardwire this unit without an issue. NOCO also makes the GENIUS2D which is a smaller 2A charger but its completely sealed and will be unaffected by water and grime from the road.
I don't think NOCO has any written guidance on this but we normally call it after two attempts at the recovery process. If we are not able to bring a battery back after two full cycles of the recovery mode then its to far gone.
@@HighTechBatterySolutionsInc Thank you for the reply! I actually went ahead and ran three Recovery cycles one after another with my Genuis5 yesterday. And then I ran it in the maintanance mode for 12 hours. That got my battery SOH percentage go up from 82% to 99%. With my other charger's recovery,, Chinese Konnwei KW510, I was not able to go above 82% SOH.
Got my mounted per instructions and as soon as I started my rig it started smelling like burning wire. I disconnected immediately and smell stopped immediately so what’s up here? What did I do wrong?
It would take a considerable amount of heat to melt the rubber coating of the wires - there is either a reverse polarity situation or you have a dead short somewhere in your setup.
I wanted maintenance in a remote location. Took delivery today. Right out of the box saw the AC cord is permanently attached. Very disappointed as the narrator didn't cover that it always needed to be plugged in. Also bought several accessories. Case, etc. Really cryptic description, excludes some accessories that are included with competitors.
Can I trickle charge/maintain my battery by connecting it via the alligator clips? I ask because getting to the battery terminals requires unhooking a bunch of plastic clips and a plastic cover.
Absolutely, whatever method you choose to connect the charger to the battery will not make a difference for the functionality of the charger - it will still go into its charge and maintenance mode.
I have a lithium battery in my 2018 Road glide special, l left my led lights on and it ran my battery all the way down... my trickle charge wouldn't bring it back, however this noco genius 5 brung it back with no problem...
How do you turn it ON? I just bought this, put it to charge but when I press the Mode button it doesn’t turn on. Or those it turns on when it’s connected to the battery?
Are you looking for a jump starter or a charger? All of the NOCO GENIUS series chargers require a wall outlet to charger your battery, so if your in the middle of parking lot its not going to do you much good. If your looking for a portable jump starter with a self contained battery (no AC required) then I recommend taking a look at either the NOCO GB40 or GB50 series jump starter.
Hi Thanks for the review I do have a Renogy Deep Cycle Hybrid GEL Battery 12 Volt 200Ah ,What settings should I use on the noco G15000 charger? Thanks in advance
Can I start the car when it is connected to the battery with or without connected to the power? Will it ruin the battery if I use repair mode on a good battery. I just wanted to put it on repair mode on a 4-year-old battery. Thank You.
I do not recommend you start the car with the charger hooked up to the battery regardless if it's connected to AC or not. The repair mode will not ruin a 4-year-old battery, but if there is no issue with the battery at the moment then there is no need to engage the repair mode.
Hi, i bought a genius2 , for how long it will take to charge my battery , I started to charge for 8 h and I still have only on light 25% still blinking
@@NOUNOUDZ100 If your battery is completely dead then its going to be awhile. The GENIUS2 is a 2 amp charger so you could be looking at a full 24 hours before its fully charged.
Ideally yes, the charger can be left hooked up to your vehicle battery indefinitely to keep it topped of with no adverse effects to the car or the battery.
@@HighTechBatterySolutionsInc After hooked up for 12 hours, mine became very hot on bottom. Like 70 degrees Celsius. The green light just pulses. Also, the dead battery showed charged in 45 min ...how can that happen?
@@HighTechBatterySolutionsInc it was a12 volt agm car battery with 2 volts in it. Isn't flashing green in maintenance mode? My volt meter reads 12.5 volts after 45 min. Seems too quick.
Hi! I bought a noco genius 2 ah charger. The battery I have is a gel NPG 12v-40ah. Which mode to choose to charge this battery on a 12v or 12v AGM charger?
Probably not, the heater may have a strong enough draw on the car battery which would cause the NOCO charger to error out thinking there is an issue with the battery itself.
This charger will work on the Suzuki without an issue. If the Mercedes has an auxiliary battery bank on it to run additional accessories then I would recommend stepping it up to the GENIUS10 unit.
So I just bought this charger and hooked it up to my 2007 mustang got that has the stock shaker 1000 system that has 2 subs in the trunk. The subs are making an intermittent humming noise with the charger connected. The battery is fully dead right now, hence why I connected the charger. It occasionally changes pitch as well. Does anyone know if this normal feedback from the charging system?
Is your audio system drawing power from the vehicle while it's off? This situation is not something we have heard of before and we sell a decent amount of batteries for audio systems.
-20C is about the limit that the charger can operate in, if you get any colder than that then your going to start running into issues. The operating temperature for the unit is -20C to +40C.
Just to confirm, this is a battery charger and must be plugged into the wall outlet in order to charge. This unit does not have an internal battery and is not able to jump start any vehicles.
3 years later, but the NOCO website suggests "all lithium batteries with a BMS (Battery Management System)". I think that would be most Lithium batteries these days, I'm not fully across it but as far as I know a BMS prevents over/under charging and balances the cells. I'd kind of guess the NOCO just gives the Lithium battery as much as the BMS allows it to take, which is why it has it's own mode, while normal batteries it needs to be smarter about how it applies the charge for the given battery tech.
Battery fully charged goes solid green briefly than begins to blink slowly...that is indicating it’s in maintenance mode..u can leave it like that till u it goes solid green..may take a few days..
@@facedown9754 if I charge my 12v AGM once a month to top off is it better to do the full charge to 14.8v or is it ok to just charge it until it goes into maintenance mode which is around 13.5?
I just got one of these its the genius 10, I'm wondering if I can safely hook it up to my diehard agm battery while connected to my alternator and just leave it for when I don't drive the car for a few weeks or so? will it keep my amg bat' topped off?
Yes, you can leave this charger connected to your battery without worry - it's designed to be able to charge the battery without removing it from the vehicle and it will not overcharge the battery nor compromise any of the electronics in the vehicle.
When I get it tomorrow, do I have to enter any specific mode when I hook it to my c6 2008 Z06? I want it to trickle charge and keep the battery at full charge.
Hi I've just bought the Noco genius 5. I've hooked it up to my flat battery which is only a few months old. It's pulsing red, one light only. Like the light dims and goes solid then doms again and goes solid and so on. It's been on charge for about 24hrs now, nothing has changed, it's been pulsing since. According to manual, red pulsing means it's under 25% charged. It's been 24hrs surely it would have charged over 25%, or is my Noco a lemon?
24 hours is a considerable amount of time to continue on the first stage of the charge cycle. Do you have another battery you can try the charger on by chance?
@High-Tech Battery Solutions, Inc i decided to reset the charger. After resetting it was pulsing on first red for about an hour, then it went straight to the green pulsing. It's been green pulsing for about 6 hours, the battery indicator has turned to green which I'm really happy about. Not sure why it stayed in the red pulsing stage for so long. Battery is charged. I'm leaving it overnight pulsing on green. Thanks for your reply.
Unfortunately, there is no cable available from NOCO to charge a Quantum Turbo battery. The charger itself will have a single lead on it, so if you wanted to charge multiple batteries then you would have to wire them up in parallel. They also have a model called the NOCO GENIUS2X4 that is a 4 bank model with a 2 amp output per bank.
Hi Richard - I have a 2003 Ford F250 diesel with two batters in parallel and just purchased the Genius 5. Do I just hook up the clamps to the appropriate terminals on the driver side battery and does the Genius 5 automatically trickle charge the batteries with low voltage?
In most cases yes, that is the way they are set. If you have access to a voltage meter you can double check that your AUX battery is getting charged as well. In some setups there is a essentially a kill switch that when the vehicle is turned off then the AUX battery is disconnected from the starting. Its not something we see a lot, but I have seen it.
For Repair mode,i need to have in stand by,then press for 3 seconds and once more. Then i leave the red 12V-repair light to blink until it is over...or? Tnx
@@HighTechBatterySolutionsInc I have battery in my car fr 6 years and still works. Now in winters little slower,so i tried to fill it up. Yesterday i was charging for 10 hrs.....and today it again7hrs...but the green light still blinks. And from the start it shows that it have at least 75%. Don't know why it charges so long.
@@1jodlar I think it's time to get your battery tested at an auto shop to see where it is in the life cycle. It sounds like your battery may be having a difficult time retaining a charge which would be why the charger is not getting to the fully charged solid green light on a consistent basis. A load test on the battery will let give you a solid idea of how much life the battery has left.
Want to use on a bike battery but the Haynes manual I’m using says should be charged at rate of 0.7 A (Yamaha sr125 1986) will this be ok or will it over charge the battery? I have other bikes and cars so would rather have a charger that will work on them all. Thanks
Yes, this battery charger will work on all automotive batteries without an issue. For your 24REXT series battery you would use the standard 12V charging mode as that is a flooded group 24 series battery.
Negative, you can charge wet cell, gel cell, enhanced flooded, and calcium style batteries in the 6V mode - the 6V mode is actually not recommended for AGM batteries.
Can this charger keep on maintain for more than a day. Say I leave car charger on for many days. Why it turns to standby mode? Is this mode still maintaining my battery?
I bought One of this for a battery of a Mazda cx-3 (1.8d with star&stop) to mantain the charge of the battery for a long stop ..the question Is: i have to use 12v normal or 12v Agm? Thank you
