this post was submitted on 23 Sep 2025
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Science Memes

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[–] ArsonButCute@lemmy.dbzer0.com 20 points 2 days ago (1 children)

You still occasionally should, let it go all the way to dead, but for calibration reasons instead of safety reasons

[–] tuff_wizard@aussie.zone 11 points 2 days ago (1 children)

That was the original reason. Ni-cad batteries develop a “memory” if they aren’t fully discharged loose capacity.

[–] ArsonButCute@lemmy.dbzer0.com 13 points 2 days ago* (last edited 2 days ago) (1 children)

With modern Lithium ion batteries its because as their capacity decreases over time the BMS can't always keep up and recover the 100% point unless you're occasionally draining it all the way. This can result in someone charging their battery to say 97% and leaving it for hours to reach a 100% it will never reach. This is potentially unsafe as it heats up the battery.

Edit: Autocorrupt beansed up my comment

[–] crank0271@lemmy.world 8 points 2 days ago

You're probably already familiar with this resource, but Battery University has some interesting and useful information about batteries and it's accessible enough for the layperson.