They were charged individually to 100%, 1000mAh accurately removed (taken out), then stored 1.5 month. 5A charge 25mA termination, @ 3.600CV.
Subsequent re-charge at 5A and 200mA termination current, @ 3.600V Gives me figures like this (this is 8 cells from 80 that I have.)
- Code: Select all
Cell Beep@CVpoint EndCharge@200mA Self Discharge mAh (Lost)
1 809 1038 38
2 789 1016 16
3 775 1002 2
4 756 997 -3
5 783 1024 24
6 896 1122 122
7 782 1019 19
8 788 1020 20
As you can see they all vary, and cell 6 varies more than I like. I ordered 2 extra cells. I may not use the 122mAh lost cell. This way I can assemble GROUP[S of cells that have the same AVERAGE self discharge. So they will stay in balance if unused for a while.