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Disclaimer: if you blow your battery up, I'm not responsible for you not being careful....
I have three young kids with lots of toys....most of which use lipos. They have not quite grasped the fact that you cannot run the batteries till the vehicle stops and you can't leave a drained battery drained for a long time. So....I'd be broke if I had not devised (well after some searching) a way to bring them back to life. This is dangerous, so great care needs to be taken when doing this. You've had this happen before I'm sure...plug battery in...charger says low voltage...will not charge. Well most of the time you can save it (damage is done I'm sure but if its not puffed or leaking, you might get lucky). I run an extension cord out on my driveway (hey, you never know) and plug in my charger. Put the chatter on Nimh and charge at .1 amp. Yes, 1/10 of an amp. Back away. Watch the voltage. It should come up slowly. Well faster than you think really...but if it goes down or stays where it's at...unplug the cord out the wall and cut your losses (not literally, that will cause a fire lol). Anyway back to it. Get it to about 3v per cell. Good idea to plug a voltage reader in the balance plug. If one stays real low and the others are much higher...throw the towel in. Once you get to 3v per cell put it on lipo charge. Charge at about 2 amps for 4000mah and up. 2000 to 3500 mah do 1 amp. Smaller batteries just do 1/2 of the mah. This has worked perfect for me on numerous batteries. I'm doing one right now as I type this. I think I would not use your rescued battery in high amp draw or series setups. Remember, it hurt...but it will work and you'll likely get a little more life out of it if your careful. I've only done this on deeply discharged batteries. The one I'm doing right now was at 1.89v when I plugged it in....it's a 3s pack. It's taking a charge and balancing out fine right now. I've one had one fail....it was used about 10-15 more charges and then puffed up. I know some of you guys are going to scoff at this...and that's fine....I just can't afford to keep buying batteries when I know they won't be taken care of on the level that I care for mine.
I have three young kids with lots of toys....most of which use lipos. They have not quite grasped the fact that you cannot run the batteries till the vehicle stops and you can't leave a drained battery drained for a long time. So....I'd be broke if I had not devised (well after some searching) a way to bring them back to life. This is dangerous, so great care needs to be taken when doing this. You've had this happen before I'm sure...plug battery in...charger says low voltage...will not charge. Well most of the time you can save it (damage is done I'm sure but if its not puffed or leaking, you might get lucky). I run an extension cord out on my driveway (hey, you never know) and plug in my charger. Put the chatter on Nimh and charge at .1 amp. Yes, 1/10 of an amp. Back away. Watch the voltage. It should come up slowly. Well faster than you think really...but if it goes down or stays where it's at...unplug the cord out the wall and cut your losses (not literally, that will cause a fire lol). Anyway back to it. Get it to about 3v per cell. Good idea to plug a voltage reader in the balance plug. If one stays real low and the others are much higher...throw the towel in. Once you get to 3v per cell put it on lipo charge. Charge at about 2 amps for 4000mah and up. 2000 to 3500 mah do 1 amp. Smaller batteries just do 1/2 of the mah. This has worked perfect for me on numerous batteries. I'm doing one right now as I type this. I think I would not use your rescued battery in high amp draw or series setups. Remember, it hurt...but it will work and you'll likely get a little more life out of it if your careful. I've only done this on deeply discharged batteries. The one I'm doing right now was at 1.89v when I plugged it in....it's a 3s pack. It's taking a charge and balancing out fine right now. I've one had one fail....it was used about 10-15 more charges and then puffed up. I know some of you guys are going to scoff at this...and that's fine....I just can't afford to keep buying batteries when I know they won't be taken care of on the level that I care for mine.
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