Why does charging a phone battery to 100% keep the discharge rate slower than charging to 90 or 80%?

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I have experienced it on multiple mobile phones and my laptop. If i charge the battery to 100% the discharge to 99% is way slower than if i charge the battery to 90% and discharge to 89%. And this makes me charge the battery to 100% even when I know that it is bad for the battery just because the charge lasts much longer than charging to 90 or 80%. Is it related to some kind of chemistry?

I am ok with eli 20 also. Thanks.

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6 Answers

Anonymous 0 Comments

Cell phones, laptops and tablets are all made where the battery percentage indicator isn’t a true indicator of how much battery is there. They intentionally make it look like it is discharging slower when it is full, so you think you are getting great battery life. There is no laws that say the battery percentage had to be an accurate representation, so it is really whatever the manufacturer wants it to be. This is also why is discharges so much faster below 50%. Also, for all of them, when the battery says 0%, they aren’t actually empty either.

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