accidentally shorted lipo pack; 2.68v/cell, is there still hope?
11-02-2006, 04:36 PM
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accidentally shorted lipo pack; 2.68v/cell, is there still hope?
Hey,
Well, today I was soldering a connector to my new 2S1P lipo pack, when stupid me shorted it. It was only for a very brief moment but I'm afraid my pack is ****ed. Or well, according to the note that came along with it, it should be. The note says; discharging the pack below 3v per cell will damage it. Well I measured my pack and it reads 5.36v, thats 2.68v/cell! Is there still a chance that it may have survived?? I'm new to lipo and I don't know what to do! May I have some hope that it gonna be ok and try to charge it, or is it garbage material none the less? Thanks for your advice..
oh btw; I can't see anything abnormal on the outside (not swollen), and it didnt blew up either. obviously.
grtz
Well, today I was soldering a connector to my new 2S1P lipo pack, when stupid me shorted it. It was only for a very brief moment but I'm afraid my pack is ****ed. Or well, according to the note that came along with it, it should be. The note says; discharging the pack below 3v per cell will damage it. Well I measured my pack and it reads 5.36v, thats 2.68v/cell! Is there still a chance that it may have survived?? I'm new to lipo and I don't know what to do! May I have some hope that it gonna be ok and try to charge it, or is it garbage material none the less? Thanks for your advice..
oh btw; I can't see anything abnormal on the outside (not swollen), and it didnt blew up either. obviously.
grtz
11-02-2006, 05:44 PM
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RE: accidentally shorted lipo pack; 2.68v/cell, is there still hope?
As long as it didn't swell or fry anything visually it may be ok. Do you have a balancer? You may want to plug it into the balancer before trying to charge it. Otherwise, the only way I know how to save them is to charge at a 10% rate of the normal. So if it is a 1350mah pack, your max charge rate normally should be 1.35 amps, so to try and save it, try charging around .13 amps or 130 ma, be sure to monitor it the whole time. You have to trickle charge it like this until it gets above 3.2 volts per cell. Then for the first full charge after that, I would probably charge it nice and slow, maybe even at the same rate to see how the pack handles it. After one good full charge and low rate discharge, if it looks ok and stays above the 3.2 volts per cell, you can go back to a normal charge rate.
11-02-2006, 10:22 PM
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RE: accidentally shorted lipo pack; 2.68v/cell, is there still hope?
Be aware that some LiPoly chargers don't like to charge packs when the cells have gone below 3.0 Volts. It may be necessary to somehow fool your charger into getting the cells back up over 3.0 Volts, or use a NiCd/NiMH charger to CAREFULLY bring the each cell up to 3.0 Volts.
11-03-2006, 08:50 AM
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RE: accidentally shorted lipo pack; 2.68v/cell, is there still hope?
hey,
yea I did have that problem matt mentioned, my schulze didn't want to load the pack, so I went to the local heli centre to try it on the shopkeepers infinity and it loaded fine, seems ok now. Thanks for the help.
grtz
yea I did have that problem matt mentioned, my schulze didn't want to load the pack, so I went to the local heli centre to try it on the shopkeepers infinity and it loaded fine, seems ok now. Thanks for the help.
grtz
