Dead Lipo Battery Recovery

[7427665]

Nice video, had a problem my 3s forgotten on my radio, the trick for changing to 2s did not worked, saw your video. Chosed NiMh, set 0.5A, voltage started do increase, at 9v I stopped. Changed to Lipo Balance and it is charging as i type, Cells now at 3.61V. Thank You !

[rcjoseb]

@7427665 Your welcome. Another lipo saved from the garbage heap!

[emilen2]

Good show :)

Though I giggled "Niihm - nickel hydrium metal oxide"?!?

[rcjoseb]

@emilen2 Thanks.

[TheChriso1]

nickel–metal hydride

[X2CT]

Thanks for the tip..you save me $70 for a 5S 5000mah batt!! thumbs up!!!

[rcjoseb]

@X2CT Glad it helped, thanks.

[tallguysd]

I learned this tip by myself. but the WARNING part is right you can puff a pack and cause a fire if you dont know what your doing! so be careful

[rcjoseb]

@tallguysd Always better to be safe than sorry

[addictedtodat69]

WOW, that'z a first, usually folk'z start off with RC Truck'z n Car'z then onto Plane'z n Heli'z, do u hav any good recommendation'z for a good outdoor Helicopter, dat'z not too expensive ???

[rcjoseb]

@addictedtodat69 The only helis that I fly are the little indoor ones. But you can check the forum at mikeysrc.com. There are alot of heli guys there than can help you.

[addictedtodat69]

You Are The Man With The Plan, keep up d good work, do u bash any RC Monster Truck'z or do u only mess wit Planes ???

[rcjoseb]

@addictedtodat69 Thanks. Planes and quad/tri copters for me. No cars or trucks.

[addictedtodat69]

Wicked ass video, very informative, that's a money saver for SURE !!!

[zorthous17]

HOLY CRAP! you saved me 50 bucks THANKS!!

[archedperson]

Thanks bro! I tried this and I was able to recover one out of 2 batteries. Using the other 3S as 2S for testing servos, motors etc at home

[chrish1956]

i have a thunder ac6  please tell me how to put it on auto i have tried everything but i cant get it to work.

[WheelyKingTV]

thanx so much my lipo is working perfrectly fine again :)

[newbornmoney]

thanks dude. i just did this from your video and bam! it works.

[rcjoseb]

@newbornmoney My pleasure.

[tylerboy09]

hey mate... thanks for that... worked great!!!!

[drew31186]

Worked Great and saved my battery. Thank you for the video. BTW I used a HobbyKing Eco Eight charger

[rcjoseb]

My pleasure. Glad it worked for you!

[twbrkfd1]

Thanks! I knew there was a way to do it, but never had reason to until today.

[ShotwellSharks]

thanks dude...your video helped me out now im able to charge my battery

[shortyjk95]

nickel metal hydride

[96sunvalley]

I'm not trying to sound like a know it all and I like your videos, however eastcoast78 is right. That plastic static bag will just melt and fuel a fire. I'm just trying to help. Happy flying to you my friend.

[rcjoseb]

@96sunvalley I switched to a real LIPO bag a while back. Much safer :-)

[eastcoast78]

@rcjoseb Hobby King has them DIRT CHEAP;0)

great vid rcjose!!

Usually when i peaked mine up i only set it to .1A didn't take long at all, i always stand over the battery as well, just in case...

LOL NinBatmode would be a cool On-line name lol

check my latest vid with the RadianPro

Cheers

[Kpilot786457]

I think that it is better to be safe than sorry. No need to risk a fire, better to be safe than sorry."do this at you own risk...." better to buy new ones... Just look at battery fires aftermath.

[rcjoseb]

@Kpilot786457 That's only true if the battery cells are damaged and the LIPO itself shows puffing. Puffing/damaged cell = replace LIPO.

This procedure should only be done on a LIPO that is not damaged and has gone below its minimum voltage due to being plugged in too long. I have recovered a few LIPOS this way with no issues.

LIPO fires occur because there are people that insist on using puffy or damaged cell lipos and/or are careless. Safety 1st!! Even a new LIPO can catch on fire.

[eastcoast78]

works everytime ;) learend this last year!!

A Proper lipo charge bag might be good, that static bag well just melt!! ;0(

Great video

EC78

[rcjoseb]

@eastcoast78 Thanks. Yes, I use a very oversized LIPOI bag now.

[WUZIGULUHU]

if this works you will have saved me 500$ stupid store not telling me how lipos work

[rcjoseb]

@WUZIGULUHU $500? That's a lot of lipos.

[WUZIGULUHU]

@rcjoseb mine are $90 a piece i use mine in rc cars so...

[rcjoseb]

@WUZIGULUHU Must them big ole 6 cells..ouch!

[WUZIGULUHU]

@rcjoseb yea but makes the cars do wheelies :)

[WUZIGULUHU]

@rcjoseb how many amps do you think i should go up to i did it up to 5A and it wont get higher than 6 volts i think i need to get to at least 7 volts

[rcjoseb]

@WUZIGULUHU Usually it's 1.0A per 1000 Mah.

[WUZIGULUHU]

@rcjoseb YES! 5.0A and i got it thx soo much

[gda882002]

works great thank you ,,you saved me 100S

[RCWinnipeg]

Jose awesome video buddy thanks for bringing this technique to our attention. One question for you, I know you made reference to safety and do at your own risk etc over and over. Have you ever had a Lipo blow up doing this or are you just being cautious for the viewer? Thanks again!

[rcjoseb]

@RCWinnipeg I had to mention that in the video because there are folks that will do this incorrectly and/or will run into into problems and I am not liable. I have never had a lipo blow up on me. It's always best to play it safe and use a lipo bag and be cautious. You never know what will happen.

[npaisnel]

Oh

NiMH = Nickel Metal Hydride

Pb = Lead acid battery...symbol Pb (from Latin: plumbum) perodic table ..High school chemistry stuff

NiCd = nickel–cadmium.

As for being critical about stopping the charge in NiMh mode just after it reaches 6 volt ( for your 2 cell pack) ..not necessary. The difference in the charge modes (Nimh/LiPo etc) only comes in to play at end of charge.

So taking the pack up to 6.5 or 7 then switching to LiPo mode would do no harm

[npaisnel]

Nice to see someone showing how to do it..I have saved this link to show others. I have been doing this for a long time now

A few comments.

For a start charge I would go with a lower charge current in NiMh mode..the lower the better, the lower the battery is to start with the lower the current should be . I recovered cells from below 1 volt per cell, but before the charger, I used a very small charge current (0.01A) from a Digital Voltmeter in Continuity mode.It puts out 2v so can be used

[tacobell28371]

i got it going again but now it says that the input voltage is to high but it is only half way charged

[raysaboy]

Thanks homie! I'll let you know how it goes, if I still have fingers to type with... Haha

[raysaboy]

This might be a stupid question, but... Is this method safe on slightly puffy hardcase lipos? I traded something for these off craigslist, and didn't notice they were puffed till 3 days later... Of course the guy won't trade back... :/

[rcjoseb]

@raysaboy Since I can't see the battery myself I would say no but if you did, make sure you do it outside and put the lipo in a lipo charging bag, concrete block or other enclosure that would contain an explosion/fire if it occured. Think safety first!

[stobodort]

THANKS A LOT! YOUR VIDEO SAVED MY BNEW LIPO

[purplenoise2002]

I would suggest another thing: The lower the starting voltage, the slower the "boot" charge current should be. Don't know of exact numbers, but I would charge at the lowest possible setting (100ma on my charger) until it goes over 3.0 per cell. This minimizes the chance of electroplating inside the battery (which could make it puffy later on) and will probably recover it to a better condition. Don't rely on anything but fiberglass, sand or concrete as a flame barrier. Too hot a flame for plastic

[Skiman21632]

I surely will try this i have 2 e-flight packs with very low voltage my tritoneq charger will not pick them up. I will report back and let you know if any progress thank you for your time and info.

[rcjoseb]

@Skiman21632 Good luck with saving the lipos!

[Skiman21632]

@rcjoseb So far this method did work for a 1800mah 11.1v batt which was reading 3.6 volts total when i started. It charged to 4.20v per cell ended up taking 1850mah and was 12.46v charged. Mine also took a couple hours. Thanks

[purepurebliss]

Rchoseb Hey thanks for the tip. It really has helped me. I am charging my battery now and it is almost complete. Keep up the good work

[booterspaw]

THANK YOU SIR !!! You don't know how much I appreciate this video. Mr. HawkSkyFlyer stirred me to it. Thanks Again !!!

[rcjoseb]

@booterspaw Glad it helped. It's alive! It's alive!

[kevster755]

BRILLIANT!! Your technique just saved me £50, thank you very much rcjoseb

[rcjoseb]

@kevster755 Another LIPO defeats death! Hooray!!

[hawkskyflier]

Thanks rcjoseb, I used your method on a 3 cell 1800 Lipo. Just used 2amps and I went for 4.0 volts, to 5, then checked with Lipo charge, no go. I checked at each amp, when I got to 8.56 I checked again... WOO HOO!!! IT LIVES AGAIN!!! DARN.. now it's raining, Oh well, charges all my packs ready for a clear day now.. Thanks, jc

[rcjoseb]

@hawkskyflier I'm glad it worked for you!!

[martin2689]

thank you very match you save my 11.1v lipo

[CrazyJet101]

Thanks you just saved me two lipo batts.

[rcjoseb]

@CrazyJet101 Glad it helped!!

[amjtech]

I would NEVER EVER use a PC Static bag like that to charge with for serveral reasion. 1) they BURN 2) THEY CONDUCT ELECTRICITY!!! This method works great but use a real lipo bag.. Those bags BURN and release toxic chemicals.. As a function of their anti-static design they conduct electricity, altho with high resistance. I wouldnt take the chance.. espacially if your using a charging adapter as he does in this video.

[rcjoseb]

@amjtech Thanks for the info, I didn't know that!!

[JollySwagman2006]

Nice , great info rcjoseb, have seen a few folk do this with various Lipo;s and varying outcomes

[Mena142]

I killed a battery the other day because I forgot to unplug it, and I revived it with this same method but I was quite liberal with the NiMH charge....

[rcjoseb]

@Mena142 Glad it worked for you!