Use this forum to chat about hardware specific topics for the ESP8266 (peripherals, memory, clocks, JTAG, programming)

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By lethe
#12142
sej7278 wrote:surely cellphone batteries are just lipo's, so need a protection circuit too?

Most are lipo these days, some for older phones or with lower capacity might be li-ion. And yes, they do need protection, they usually have a protection circuit build-in. That said, I would still use a charger with added protection circuit (can't hurt to be paranoid).