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Questions regarding Li-ion (lithium-ion) cells and batteries, including proper charging, protection, and usage.

3 votes

Running 3.3V MCU from LIR2032 Lithium-ion button cell

You might be able to get away without any voltage regulation at all. I'm successfully running an Atmel ATmega328 with a nRF24L01+ transceiver straight of a 2032 cell. The mega328 and nRF24 don't rea …
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