Kraton Do I need to dispose of my Lipo?

[Tskluzak]

Hi Guys,

I have a 4S Lipo that has one cell dropping really low. Went out to drive and and LPV today. 3 of the cells were at 3.8 and 1 cell was at 3.47. Tries to put it in storage mode and the low cell is slowly going up. After an hour and a half it’s up to 3.63. Not sure if I am wasting my time here to save it or should I just plan on disposing of it? Also when it comes to testing the difference in voltage of multi cell LIPO’s, what is a good rule of thumb to know if it’s a good battery or not?

 

[Lazy Bushman]

If you have dropped a cell then you won't recover it. Some of they guys here keep their old batteries (where they haven't started to swell) and use the good bits are part including de-soldering and re-soldering cells. I don't not because it is a bad idea, just that I don't like keeping stuff hanging about for "one day when I might need it". I have enough of that cluttering my shed as it is.

 

[Soppy]

I would try a couple of charge /discharge to storage cycles and see what happens.

 

[Tskluzak]

I would try a couple of charge /discharge to storage cycles and see what happens.

Noticed when I try to charge it that same cell that is lower then the others, starts charging faster then the others in the pack. It like jumps from 3.73-3.88 while the others are only at 3.81.