[NOT A BUG] 61Wh battery becomes 55Wh battery after 140(?) cycles, voltage drop 0.2V

[Charlie_6]

I can no longer edit the original post so I’ll label NOT A BUG and put the quote here with the link from solution

@nrp

This will have the opposite effect of what you are trying. As a lithium polymer battery with modern chemistry cycles and ages, if you attempt to continue to charge it to the original voltage from when it was new, aging will accelerate, rapidly. The battery and cell vendors characterize a max charge voltage curve over aging that maximizes cycle longevity, specifically optimizing for max charge level at 1,000 cycles. Ideally max voltage would be a smooth curve instead of being drops at certain cycle counts, but that isn’t something our battery vendor was familiar with characterizing and programming.