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by mumblemumble 2359 days ago
To add to what others have said with some numbers:

https://batteryuniversity.com/learn/article/how_to_prolong_l...

To distill it down to a single figure: If you drain the battery down to 40% capacity between recharges, you can expect it to take ~600 charge cycles for total capacity to drop by 30%. If you only drain it down to 90% between recharges, the number of cycles increases to ~6,000.

The article doesn't specify, but I assume that's using a slow charge. I am guessing that with a fast charge, which is what is implemented in most consumer electronics, the difference would be even more stark.