@livfe "Cannot be as other batteries charged fine" you have tried to charge other batteries and it charges until you use this particular battery? ;-) In that case you want to check your battery control board. It is entirely possible that either a fuse on the board or the control board IC locked the battery. what voltage do you have just on the battery? these batteries are a PITa to teardown but if you have enough time, you can always give it a try. See what you come across once you have it disassembled.
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=== Update (02/25/25) ===
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@livfe looks like I am looking at the underside of the connector. Here is the connector pinout
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[image|3558122]
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and here are the corresponding pins on the battery cable.
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[image|3558123]
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1,2,3 will be positive and 7,8,9, will be ground. 5V maybe 1A and just a short duration. See what it gives you. Always check for excessive heat when trying this. I have never blown up a battery or set the shop on fire, just use common sense :-)
@livfe "Cannot be as other batteries charged fine" you have tried to charge other batteries and it charges until you use this particular battery? ;-) In that case you want to check your battery control board. It is entirely possible that either a fuse on the board or the control board IC locked the battery. what voltage do you have just on the battery?
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@livfe "Cannot be as other batteries charged fine" you have tried to charge other batteries and it charges until you use this particular battery? ;-) In that case you want to check your battery control board. It is entirely possible that either a fuse on the board or the control board IC locked the battery. what voltage do you have just on the battery? these batteries are a PITa to teardown but if you have enough time, you can always give it a try. See what you come across once you have it disassembled.
@livfe "Cannot be as other batteries charged fine" you have tried to charge other batteries and it charges until you use this particular battery? ;-) In that case you want to check your battery control board. It is entirely possible that either a fuse on the board or the control board IC locked the battery. what voltage do you have just on the battery?