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How to make a Smart-Charger?? Answered

I was wondering if anyone knew how to make a smart charger for my cell phone so the charger turns off after my battery reaches a certain level. Help. Thanks.

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wkuace

9 years ago

i'm almost certian that phones have their own smart chargers built in. I have opened up some car chargers and they are pretty much just a 7805 and other components (just a 12v to 5v converter) so the phones must control the charging.
That being said i'm not responsible if you destroy your phone, good luck

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lemonie

9 years ago

Yes, people do, but you need to be careful. How good are you with a soldering-iron and electronics?

L

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orksecurity

9 years ago

Regarding why you want to be careful: See https://www.instructables.com/answers/How-can-I-recharge-37v-Li-ion-batteries-from-cell/

Question: Doesn't the phone already contain a smart charger? I haven't seen one that will overcharge its battery...