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Boca Bearings . Modefo's RC Helicopters . XHELI.COM

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e-Electric Batteries & Chargers > I revived a flat Kokam 1500 LiPo battey pack
 
 
Saint728
Elite Veteran
Location: Sydney Australia Sponsored by: Quick UK

I had a 2c Kokam 1500 LiPo I forgot to unplug from my Dragonfly a few nights ago. When I woke up it was dead flat. I tried to charge it but it would not charge more then 1 mAh in 2 minutes then the charger would beep and say not enough volts and stop. I kept doing this for 2 days on and off all day long charging the battery for 2 minutes at a time, waiting for it to beep and stop, then I would start the charge again. Well, tonight after about 70 times trying to charge it, the battery started to take a charge. After about 90 minutes of charging on 1.5A, the charger said it charged the battery 1576 mAh. I pluged it into my helicopter and it flew just like when the battery was new. Now I know not to leave the battery connected to the helicopter all night long again. But if I do, I can revive the battery by charging it up again over and over until it takes a charge. So if you've ever done the same thing as me and forgot to unplug your LiPo, you can bring it back to life in a couple of days.

Take Care,
Cheers, Patrick

MA Fury Extreme,YS 91,MPII,V-Blades,601
Raptor 50 SE,OS50 Hyper,MPII,QUK Head,TT600 Blades,601
02-08-2004 Over year old.
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Raptor Rulezzz
Key Veteran
Location: Rockanje, Zuid-Holland - The Netherlands

I`ve had the same experience with a mobile phone battery, Li-ion.

It was dead but I just boosted it a bit with a charger that I use for my 4.8V battery`s, so it had some voltage again and charged it with the normal charger... worked like a charm

Cheers,

Rich



Proud Member of Team QuickUK, Team Duralite & Sponsored by V-blades & 4rc.nl
02-08-2004 Over year old.
 
 
Shoo
Heliman
Location: Eastern MA

I just did the same thing with 2 tanic lipo packs. I only get 75% of what it used to put out but it's better than buying new packs. It took about 5 attempts with my triton but eventually the came back to life.

S
02-12-2004 Over year old.
 
 
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e-Electric Batteries & Chargers > I revived a flat Kokam 1500 LiPo battey pack
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