EEVblog 1732 - 20yo 1000+ Cycle Panasonic Li-Ion Battery TESTED

How much capacity has this 20+yo 1000+ cycle Panasonic 14500 lithium ion battery lost?

00:00 - Panasonic electronic shaver teardown
06:30 - Battery dimensions match the type number
08:24 - The battery capacity test setup
10:40 - 500mA Constant Current test
11:38 - How much energy is left in a "flat" battery?
13:46 - 250mA Constant Current test
14:54 - 100mA Constant Current test
15:13 - Results analysis. Talking head Dave
19:11 - How to scale time in Excel
21:20 - How to get a characteristic battery capacity graph in Excel
24:35 - Energy in a battery and the characteristic curve area, it's just an integral
26:30 - Optimising product design and battery cutoff voltage
29:13 - Battery current measured

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#ElectronicsCreators #Battery #lithiumbattery
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https://www.youtube.com/watch?v=RYAjIq4XCQY