Originally Posted by
nckmat
I have a pack of IB3800's that were doing well until they got a bit hot one day. They look OK but when I charge them they will peak out at 9v or around there, each cell will show around 1.3-1.5v each but as soon as I put any load on they drop off in about 10-20 seconds.
I have tried cycling down to 0.9v/cell even 0.8v/cell, and charging back up at 0.5 amps and 1 amp for about 2 days and still find them not holding a charge.
A guy at my local hobby shop suggested I try zapping them. I asked him how to do this and he said to strike the pos and neg wires together.
Can anybody tell me if this is correct or is there any other suggestions to bring this pack back to life? It wasn't a cheap pack so I don't want to give up on them just yet.
Ok what is a bit hot?? Is the shrink wrap melted on the cells??
If over charged you may have stuffed them up to far to recover them.
I got 2 sets of interlect packs of my mate that he said were sad. I discharged them to 4.8 v than charged them a few times at 3 amps and seem to be good. I use them in my starter box now.
Your local hobby shop is wrong about zapping. That is a proccess the matchers do to get more voltage out of them.( they zap each cell at a very high rate of amps to get a higher voltage) The proccess he told you is known as Dead Shorting which brings the cells down to Zero volts. Must be flat first. If you have a battery tray with that feature and you have tried every other option and you have nithing more to loose i would give it a go.
Good Luck.
