By Emanuele Signoretta on December 21, 2020
Having many 18650 battery cells to charge, I bought a few dirt cheap TP4056 modules (0.22 EUR per piece) and discovered that they are “not designed for” reversed polarity cells. In other words, reversed battery = instant magic smoke.
As I know for sure I will insert more batteries in the wrong orientation again sooner or later, I wondered what the best reverse polarity protection would be.
About Emanuele Signoretta
Studying electronics and communication engineering at Politecnico di Torino. Electronics, IT and Open Source enthusiast.
