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Battery Fuel Gauge with Zero Parts and Zero Pins on AVR

Battery Fuel Gauge with Zero Parts and Zero Pins on AVR

It can be nice to know how much battery power you have. It becomes critically important with LiPo batteries since you can permanently damage them by running the voltage down too low. Typically battery voltage detection requires adding a circuit with extra parts and their associated power requirements. Wouldn’t it be great to be able to do this using

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