Cheap Li-Ion Charing Circuit learnings

Brief service announcement on TP4056 based Lithium Ion charging modules from AliExpress: You need to configure them to your target batteries capacity. This is done by changing resistor R3 on them accordingly. Check out https://www.best-microcontroller-projects.com/tp4056.html for details.

If you don’t, this can lead to thermal runaway (aka setting stuff on fire) caused by overcharging the cell.

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