Testing old Lithium Polymer (Li-po) batteries after 4 years of no use! They're brilliant!

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About 4 years ago, I ripped loads of battery packs out of second hand tablets, and then split the batteries down. I overcharged them (for some reason) and stored them. I tested them with a voltmeter and a 1ohm load.
To my surprise, the batteries are in brilliant condition, with only one puffed up.
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Опубликовано:

28 сен 2024

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Комментарии : 5

@Steve_Coates 3 месяца назад

It's amazing how well good quality lithium batteries last, I recently broke down the battery pack from a 15 year old Toshiba notebook which had been sat in the back of a drawer for the best part of 10 years. The 18650s from the pack were marked as 2500mAh and on test they ranged from 2080-2150 mAh.

@AntonyCartwright 3 месяца назад

Yes, I have a proper tester here. I can't wait till I get time to play around with it! I've got some testing to do!

@pileofstuff 3 месяца назад

That's impressive. I should go through my accumulation of old Li-po cells as well. Some of them were quite ancient when I salvaged them . I can't imagine they have all fared as well as most of yours.

@AntonyCartwright 3 месяца назад

I overcharged them also! Did you notice one was 4.4v!? 🙈

@pileofstuff 3 месяца назад

@@AntonyCartwright Impressive you didn't manage to cause some "excitement" with that.