3 Ways To JUMP Start And WAKE A DEAD Lithium LiFePO4 Battery FAST!

[@HOBOTECH]

30 Ohm Resistor: amzn.to/3Fpy3fN Continuity Testing Light: amzn.to/41SppzW Cigarette Lighter Plug: hobotech.tv/amazon/#Solar-Adapters Jackery 12v Jumper Cable: gohobo.io/jackcable or gohobo.io/jzon AmpereTime (LiTime) Battery: gohobo.io/ampere use code HOBO3 or HOBOTECH --- DISCOUNT CODES on SOLAR PANELS - GENERATORS - REFRIGERATORS : hobotech.tv/amazon

[@mannyfragoza9652]

grate experiment that works. Hobotech can you imagine how many people threw their batteries thinking it was completely dead.

[@peacepoet1947]

There didn't seem to have any protection circuit on the Jackery explorer I purchased from Harbor Freight. It started smoking when I hooked the Jackery to put some extra juice in the vehicle battery when the alternator failed and the engine needed to do some traveling to get to the next AutoZone store. The battery in my 94 GMC C3500 was down to 11.4 volts when I used a Harbor Freight battery clamps from one of the solar panels with the connection for a battery directly from the small solar panel. I had another connection that went to the 12 volt outlet. I put the ground on the negative side of the battery and when I connected the positive connection to the battery is when the Jackery started smoking and the 12 volt outlet died. I had the Jackery a short time and Harbor Freight replaced the unit. Didn't have any problems with the return. I also let Jackery know what happened. They were also very nice and timely in giving me support. I wish Jackery could have a hard wire option on the solar generators like the AC200 and the air plane 12 volt connection. I use that one for the 12 volt refrigerator/freezer.

[@waltermapfumo5728]

Hi, how do I jump start a 48v lithium battery

[@ryan3786]

You absolute legend! I thought I was up for a new battery after dusting off 3x life po4 batteries, which had spent 4 years doing sweet fa. 2/3 came to life charging but the last was spitting an error on the battery charger. Used the jump trick here... 3/3 straight back to life and charging up. Much appreciated good sir.

[@jodienickypops]

Thank you so much, you gave me the confidence to jump start my van’s lithium battery and helped me restore my power! 👍🏼

[@chipmeister111]

For anyone with a 24V system... I connected (2) 12V AGM batteries in series to jump MY 24V system that was showing me 2.5V. Ran jumper cables with one positive clamped onto a resistor as shown in the video. No sparks and it took about 20 seconds for the inverter/charger to light up and begin charging. Thank you for this video, it was s great help.

[@user-hd8ej8yx9p]

thanks man, unfortunately don't have any other batteries available, will buy the Victron charger

[@williamtennill6744]

Thank you!! I just jumped my first dead lithium with your help! Went from nothing testing it to jumped it with 12 volt AGm and now she’s charging and started at 11.3/11.4 ..thanks a lot

[@jstar1000]

My son just got back from a 2 day river trip and killed his lifepo4 battery after two days of using a trolling motor. I put it on the charger and nothing. I watched this video and then connected a 12v jump pack for a few seconds then connected the charger back up and BAM! Up and charging like a Boss. Thanks brother.

[@supercomp923]

Thanks!

[@solaronesw]

Thanks!

[@alexturbine6424]

Sound information in simple language that 90% plus can comprehend the info. Nice presentation skills, I learned yech points and presentation style, thank you!

[@lucamariadona5662]

21v lipo battery of my tineco floorwasher was completely gone. I was buying another one (€70) and after I saw your video. I attached a 20v wall power supply for 30 seconds. Washer have a base to recharge. After insert a few time the washer into the base the charge finally started. Probably some second more was enough for starting at first try.

[@mateusfreira]

This video saves lives. It just worked with mine using a 12v drill battery as the quick starter thanks.

[@bcboy1962]

Hey hobo tech, thank you so much for the tip on jumpstart in lion battery. I am out in the middle of nowhere on Vancouver Island and it’s cold. Now I have a battery and I have heat and light. Thank you very much, Jim.

[@Grifter2023]

You’re simply the best. Clear inventive informative helpful creative… I’m running out of words!! Ty ur making my world a better place 👍

[@tjcarita]

Great video explanation. I bought a 48v 30Ah LiTime battery and it was set to "off" when it arrived. My lithium charger wouldn't come on to charger the battery when I hooked it up. I used my old 12v car charger to wake it up and it i did. Then hooked up my Lithium charger to charge the battery and all good.

[@Hangglide]

12v car charger can wake up 48v Li Time battery? Good to know.

[@shariqali7429]

Hi. Brilliant video. Thanks. Can I use a 12V charger to jump start the BMS of a 48V battery system?

[@winstonsmiths2449]

I have a cheapo 60v 5a charger that I use to jump my LiFePO batteries when needed. I use wall power but have also used my EcoFlow River Pro to power the charger. Most chargers need the source of input voltage to be ~5v about that of the deleted battery. I needed the 60v charger to get my LiFePO going. Works like a charm. I also make multitude of connectors for many scenarios. M4 connector to Anderson PP (APP), APP to cigarette lighter, etc. I use my chargers with ring connectors and M4 connectors to charge through my DIY solar generator setup using its solar input connection.

[@twiki1963]

Method 1) 6:38 - Is the -VE clamp just momentarily on the NEG terminal, or do I leave it clamped? Method 2a) 8:02 - Aren't we supposed to connect the +ve and then touch the -ve terminal? Method 2b) 10:00 - This just worked for me! Thank You HT! The Li Time manual suggests two methods for waking the battery up. 1) Using a "zero volt charger". How many of us actually *have* a 0V charger? 2) Connecting a 12V solar panel + charge controller. Clearly, it is not "0V" that does the trick, since the panel+SCC obviously put out 12V, and not 0V. Someone on another YT video suggested that the battery was shipped with the BMS disabled. I doubt this is the case, as my battery does not have Bluetooth. Also, when it was 'jumpstarted', my charger showed 11.9V. It's now being charged at 0.05C (5A).

[@jasonbroom7147]

Excellent video, as usual. It's worth pointing out that the battery voltage never was zero. The cells inside, usually in a 4S configuration, were simply down to whatever voltage (often 2.5v each) that the BMS is configured to shut off at. The battery cells were at 10v but the BMS turns everything off to avoid discharging the cells too low, which will damage them. All it takes is a small amount of forced current to bring the voltage above that threshold, waking up the BMS and enabling the charging mosfets to feed current into the cells. I learned this lesson with a portable power station that "died"...2 mins plugged into the automotive accessory charger in my car woke up the BMS and charged the cells enough that the AC wall charger could do its thing.

[@marcfruchtman9473]

Ah... so the BMS disconnects it. Thanks for the extra info. And thanks for the video HT!

[@drewgsands]

Hi, I have a 48 Volt 10 AMP battery that will charge for around 5 minutes then when I use the electric bike it will die very very quickly within 15 seconds how do I revive that battery. It does have a built in headlight and that's the only way that I can think of to discharge it. Or should I get another 48 Volt good battery and just go positive to positive negative to negative any help would be appreciated thank you Andrew

[@bcboy1962]

Hey hobo tech, thank you so much for the tip on jumpstart in my what’s the battery. I am out in the middle of nowhere on Vancouver Island and it’s cold. Now I have a battery and I have heat and light. Thank you very much, Jim.

[@christophelaverdure1351]

Thanks for this video, I had a strong suspicion that my bluetti wasn't really dead dead but just needed a little jump start. Saved me a lot of money!

[@Silodrome]

Just tried this with a dead lithium motorcycle battery and it worked! Thanks, you're a lifesaver. I used the stripped ends of a 12v wifi power cable I no longer needed!

[@khaled7965]

Many thanks for this helpful video.. i have braille g20 lithium ion battery 2 month old only, i left the car for 45days, trying to start it but the battery looks dead, checked it 0.16V, i have lithium jump starter, before i jump start it I contacted Braille technical services, they said "You will immediately kill a lithium battery if you jump start it from another battery", so I was very confused, i watched that video and i take the risk 🥲, the car is running now for 4 hours then switched off and on .. looks great, i really don't know if i damage it or not😂😢, but i think this professor he knows what he is doing ❤

[@Trevor7727]

in one case I had to break open the sealed case, disconnect the BMS and connect the battery charger directly to the battery bus bars. Once it reached 12V, I reconnected it all up again and the battery continued to charge to 14.4 V. I then re-sealed the case.

[@gizmosaussieadventures147]

i might try this. as mine wont charge

[@JV-zz5bq]

I did that but it does nothing when hooked back up to the inverter of the eb3a I think the bms is fried on my unit the batteries are good the bms just won't let a charge in or power out.

[@BSerrell4]

Thanks for showing all these options. I was away from home and had to scrounge a way to do this to my ‘house’ battery in our van camper, using items scrounged from my son in law’s garage. He had one of those ‘dumb’ circuit testers with the light and alligator clip, and I had a separate small 12v 5aH battery. Made it work by tickling a wired-on 12v outlet while the solar panels were hooked up and ready to charge via a different connection. Bravo! Saved my bacon.

[@eltonwells5825]

Just tried it on an Eco-worthy 12.8v 280Ah battery that was showing .11v and it worked great! Thank you, you are a genius!

[@cowpiecowboy7599]

I have an Ecoflow delta pro extra battery that over discharged because someone let it sit up. But it’s a 48 volt system I believe. I have a 12v lithium capable smart charger. Maybe if I leave it connected to it long enough might do something. I’m gonna do this in the yard tho for sure

[@mikemcguire5859]

Professor, welcome back from your desert vacation, enjoyed those videos. Thanks for the restart with a test light. Had not thought of that technique.

[@FarrellMcGovern]

That was an amazing important video! I have not seen that covered anywhere else! But I bet it will be soon! Thanx!

[@kriseilers4274]

Thanks for making my day! I know I can always count on you to help with stuff like this!

[@munsanjemweene]

I have a 48v lithium iron battery connected to an inverter/charger and MPPT solar controller, which is connected to panels through a DC breaker. My batteries discharged completely, powering down both the controller and the inverter. I managed to boot the system back up by doing the following: 1. DC breaker up 2. Battery and inverter on 3. Wired up three 12V batteries in series to get 36V (didn't have a fourth) 4. Connected terminals of the above to the terminals of the Li battery. There was a spark, as expected,and then both the controller and the inverter switched on (removed the jumper cables) and began charging the Li battery I initially tried to use 2 batteries in series (24V) and it switched the controller and inverter on, but they treated the Li battery as a 24V battery and assumed it was fully charged. This is because both the controller and inverter infer the battery voltage. Figured if I wired my last battery up to get far enough from the 24V operating range, the system would identify the Li battery as a 48V and operate as intended. Thankfully it worked.

[@tpaw6908]

Thanks Professor as a woman that loves tinkering you just saved me . I am trying to teach women basic if your in a situation what would you do. Some will be stranded . Others of like minded learning will love this. I've missed you sorry haven't been on much. Have to go over to computer to channel. But you a coffee. Have a great day. Thank you. Wish you were closer.

[@TimChang]

Wow. This trick really work, it help me to fix my studio flash light's battery. Thanks!!

[@Goody2shzToo]

I have all of this stuff except for the Jackery. But since I didn't know about these, I used a 100-watt 18-19v solar panel and connected it directly to the LPO4 battery and it immediately took it over 10v even though it was cloudy day. But HAD I KNOWN I would've used the handy little jump starter. So much easier than moving the battery around. So thank you so much.

[@erniebuffalino7781]

Thank you for keeping it simple

[@junkerzn7312]

The wall adapter method works great. It doesn't even have to be a battery charger or battery or whatever. Two clip leads and a little pokery-jiggery and you are done. Nearly all wall adapters for the misc devices you might have lying around the home are either 5VDC or 12VDC. And all such adapters are current limited (usually from between 300mA to 2A or so), short circuit protected, and typically 'hicup' on a short (retry every few seconds continuously). So just find an appropriate wall adapter lying around in the house, read the label to make sure the output voltage is reasonable, and you can connect it directly to the battery without any resistors or anything else to jump start it. If you happen to have a little 300mA current limited wall adapter, It is literally impossible to damage anything. (The voltage varies a bit on these wall adapters, so use a multi-meter to check that its reasonable even if the label says 12V. But hey if the battery is dead and below 10V, then any "12VDC" wall adapter will do the job).

[@todd.parker]

Super useful video, I'm sure this will save a lot of headaches for people

[@jakeduet3351]

You sir, are awesome for this video!!!!

[@luisbraz-ruivo]

How come I did not find this earlier. You just saved my motorcycle lithium battery. Works great.

[@gregsmith1116]

Thank you HT! You rock. I learned something today! Thanks again!

[@Hangglide]

I was quite unhappy to get brand new li time 12.8v 100A batteries delivered in the shutdown mode. I cannot connect Bluetooth. The terminals have only 3 voltage. I thought a lithium-ion battery charger would wake up the battery, so went to homedepot got a Dewalt 10A lithium charger, the charger not able to recognize the battery due to no voltage (yes after connect with charger, the 3 voltage dropped to 0.7v!!). Your video shows a car battery jumper would do the trick. I happen to have one around, I connected the negative first, then connected positive and clicked the jumper “boost” and a beep from my jumper and all jumper lights turned off. I had no idea if the LiTime woke up or not until o connected Dewalt charger and started seeing 9A current flowing into the battery!!! I also able to connect Bluetooth without any glitch. The app is actually pretty neat. I don’t know why the app got only 2 out of 5 review stars. Thank you for your video !

[@jeffrunyan2691]

Educational AND entertaining! WHAT MORE COULD YOU ASK FOR????

[@AhmedEhab-z9w]

Thank you very much for this informative video, it really helped me with my dead Lithium-ion battery!

[@RPMexicano]

Thank you, I had 3 dead lipo4. Charger would not detect. Used a lead acid full battery and wualla! Charging. Thank you so much.

[@one007guy]

I left my disconnect on in the RV and both my lithium’s died. I hooked up the generator and thought they were charging. Batteries only lasted for 2minutes. The dealership had a great tech that said they needed to be hump started. Thanks for confirming! I’m back online ;)

[@newtuber4freedom43]

Very valuable info - thank you for sharing!!

[@saal202]

Thank you Professor once again for another great tip, it worked for me with no problems

[@coryanderson2371]

I'm glad to see you're still there I killed a Jackie when the new ones and it's smoked and it'said it back to company haven't got it back yet Gosh me about 1500 but oh

[@glamperjan]

Great demo!

[@RajunCajun1]

Thank you very much! You have saved me money today! Thank you sir!

[@retrozmachine1189]

There's a wide selection of solar chargers that will 'wake up' a lithium battery where the BMS has gone into low voltage protection. It's not something a lot of people consider when buying, but at the top shelf end of things Victron will do it and at the mid range tier Renogy branded chargers will if configured appropriately.

[@chrisbeasley9538]

😅Thanks for this, after I waded through all the other b.s. I finally found this fix which was simply and succinctly explained and of course worked within seconds I used a lead acid jumpstarter with no problem that I can see.

[@gabihollywoodflorida9745]

Wtf !!!! I cannot believe it!!! Dead12 v lifepo battery that I use for fishing reels back to life !!! I used a Schumacher instant power jump starter. Remember to leave the charger together with the jump starter to work. Thank you !!!!!

[@everaldopeixoto7634]

Welcome back, Professor!

[@Jacko911]

I used the 2nd technique to jump my BMS. Big thanks, legend 🙏

[@12345howarth]

Great video. Was thinking of getting a lifepo4 for my eb3a to up the capacity. Wasn’t aware of needing to jump start if it goes dead. Good to know so I’ll be prepared. Thx.

[@rmcnasty7319]

Hello Professor Good video. Thank you for the tip.

[@paullehr9236]

Yes, I learned something. Options. I like options. And I liked this video. Thanks.

[@NguyenTroy]

Wow you just saved me couple of hundreds . Thank you.

[@Scat.original]

Great Information, Great Video Thank you

[@victorjavier4311]

It worked for me. ,,I used the NOCO GENIUS10, 10A Smart Car Battery Charger, 6V and 12V Automotive Charger. Ty.

[@indycharlie]

Great , easy to understand video .

[@richcarter4113]

Thank you so much for this Vid. I was thinking that my camp battery was stuffed. And now its back to full health. Thank you Thank you Thank you :)

[@Nostrildomus]

Now I know what too do . Thanks Mon

[@77quagmire]

Thanks man! Literaly just used jumper cables off my vehicle starter battery and it worked! You're a life saver!

[@DannyStanley-uz1et]

Hey, try cleaning the bottom of the board.Where the solar joints melt melt togethereally appreciate your video

[@jkidding386]

Thank you for this. Please can you show what I should do to jump start a 48v battery?

[@HOBOTECH]

Same, but use a 48v battery or power supply.

[@westcoast01letsride]

Dude, how cool are you .. thank you, great tutorial. Thanks again.

[@Luscious3174]

Thanks, now I've got that song stuck in my head 😎 Any tips on doing this with Ni-MH batteries - specifically dead AA rechargeables?? The charger that I normally use refuses to charge them. They sat depleted for a while.

[@aleksandralieschev2708]

Thank you! 3. Worked with mine)

[@cadefoster9279]

Very useful tutorial! Great idea for a video

[@MichaelCzajka]

Li-polymer batteries suffer from the same problem. You can jumpstart a dead 9v exactly the same way... but it's much easier... as all you have to do is touch the terminals together for a few seconds. The best solution is to make sure every charger you buy from now on includes support for lithium ion batteries i.e. Won't assume zero voltage means the battery is dead. BTW: You get less failures on these 9v batteries if you slow charge them. Fast charging is convenient but the failure rate roughly doubles. Whichever charging method you prefer (slow or fast) try to stick to it... as switching methods all the time accelerates battery failure. Glad someone is talking about the problem and explaining it... as a lot of people seem unaware that it exists or is an issue e.g. My ReZap slow charger doesn't support Lithium batteries and despite being programmable the manufacturer has not bothered to update the charger to support it... and appear to have no plans to do so. They said lithium ion batteries (AA/AAA/C/D/9V) are not very common. So why design a programmable charger? Maybe they'll change their minds eventually? In the meantime you're forced to use other cheaper chargers to jump start the charging process before switching to the slow charger. That's annoying. 🙂

[@MR1022NONO]

Wow!! Thank you.

[@roneysilveira2153]

Very good explanations tks

[@nandu815]

A Big thanks ❤

[@lancebro121]

Awesome dude I'll be using this I bet ! Earned a sub and I liked the simple explanations thank you

[@RamblinBobReviews]

P.S. We love you channel HOBOTECH !!!!! P.P.S. We bought many power stations because of your reviews :) THANK YOU AGAIN !!!!!

[@cooflypower]

You jump starter old power station with new power station, haha

[@jimdoozy]

@@cooflypower Power stations are designed to power up when they have all of their power depleted. He jump started a battery's BMS with a power station, which then allowed it to be charged like a power station. If the power drops to zero there's no power to turn on the BMS so ithe battery can be charged.

[@cooflypower]

@@jimdoozy Professional explanation.

[@TreetopFlyer74]

Tried this on my Dakota lithium battery... It's reading 0.7 volts. Jumped it and it's still not charging. What gives?

[@flyrobin2544]

I have been jump starting batteries like this for sometime. When I am out in the field and have a singular 18650 battery that dies I put the dead battery into a flashlight first followed by a good 18650 battery and turn on the flashlight a minute, it works every time. Of course I recommend having a flashlight that takes 2 18650 batteries they last a long time.

[@ben94cobra]

Worked great for Braille Green Lite LiFePo4 battery showing ~3v. LFP chargers wouldn't wake it, but touching the terminals briefly with a lead acid traditional jump box woke it up. DMM jumped to 11v and battery proceeded to charge.

[@rp9674]

I have a 12-volt lifepo4 I used in my Fiat 500e, super underpowered, car died on freeway after about a month. It's small enough and safe to carry around as a backup battery, that would allow me to get my keys out of the car and lock it & easily get me to a battery shop.

[@premiumgifts]

Hello I enjoy the heck out of your vids... learned a lot.... So I have a question... have you done a video on the DC house 12.8v 100ah lifepo4 battery...the one with the power button to turn on the dc-in/out,usb-a, and the usb-c.....my power button isn't working is that an easy fix.... thanks

[@lotharhb]

First time viewer here. Great info and very well explained, but that outro had me in stiches and earned you a sub! looking forward to more great content.

[@davidcarrico3385]

For the Jackery method, would it be better to attach the cables with the Jackery off, and then once connected, simply turn on the Jackery dc output?

[@MLesp]

What should I use for a 72v 50amp battery?

[@ptlmbutler]

excellent video, thank you!

[@mr.goldenrod291]

Victron battery chargers charge a dead LiFePo battery. Problem solved. Some battery chargers with a lithium setting only provide the LiFePo charge profile, and not the “jump start.” The BMS is a computer, and thus requires electricity.

[@dadhats]

appreciate the info! I put a lithium antigravity battery in my car and the first method did the trick for me 👍

[@khanara6]

Absolutely brilliantly comprehensive video. I have a briggs and stratton 82v 2Ah battery thats dead. Can i use this method on it?

[@martinbramston2244]

Hi , did you find an answer to fix your 82 volt battery?Martin

[@khanara6]

@@martinbramston2244 hi Martin, I'm afraid not.

[@WeekdayAngler]

Awesome! This just saved me $200 on a fish finder battery. Hooked it up to my jump pack and afterwards it charged up again. Thanks! 🙏🏼

[@Poppy_love59]

Good to know, thanks professor!

[@scottsasanecki4106]

Great stuff. Question........I have lithium batteries in my boat and I also bought a noco boost plus GB40 lithium jump starter. In the directions it specifically says not to use it on lithium batteries. Can you clarify this for me? If I understood your video correctly it will work. Thanks a lot for your hard work.

[@rodneyross5282]

I was wondering where you have been. Great information video for sure. I see you brought out the infamous clamps again remembering the last time hehehe. Have a great week. God bless.

[@Trooper501st]

Great infos, probleme with newer gen battery is that they have circuit board controller that gets corrupted on purpose when low or impacted and you need special equipement to reflash the board. Thats unecessary in my opinion. (Foe the impacted i get the point of something might be broken inside so its a good safety? But low voltage protection actualy saves the batteries so why need to relfash it!! What do you think

[@jonathonbahrychuk2486]

Thanks for posting this video! It was very useful!! Subscribing to you.

[@loucinci3922]

Excellent pro tips. Very useful. Thanks for sharing

[@eduardoandreotto3504]

Hi! I have a 51.2v battery dead and have another working on 48v. Can I boost the dead 51.2v with the 48v?

[@masonw6361]

Thanks for this informative video! If I were using a 30V / 10A bench power supply to jump start my 15.2V/4480mAh LiPo battery. Is there a specific current setting that I should use? I've been told sending it 24V will jump it but not sure if a specific constant current is recommended

[@michaeledge8905]

I was watching projects in paradise and he did a piece on battle born batteries catching fire and cracking aswell as emitting a terrible Oder. Fro m your aswell as other videos it was my understanding that these batteries were really safe. The thought of one them going up in a motor home is a concerning. What's your take on it?

[@ahmedhaffejee6776]

Thanks, very informative, but how do you achieve this with 48v battery???

[@HOBOTECH]

With another 48v source

[@rudirednose1903]

Hi Prof Hobo, thanks for your input, great video - well appreciated 👍 Through all the videos and information on internet, we get a lot of education 😉. Cheers

[@RacingBlind9]

thank you so much. I didn't realize I could you a booster pack to wake it up! life saver