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Adafruit LC709203F LiPoly / LiIon Fuel Gauge and Battery Monitor [STEMMA JST PH & QT / Qwiic] : ID 4712 : $6.95 : Adafruit Industries, Unique & fun DIY electronics and kits
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Tiny, Accurate Battery Gas Gauges with Easy-to-Use I2C Interface and Optional Integrated Precision Sense Resistors | Analog Devices
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Protector, monitor or gauge – selecting the correct battery electronics for your Li-ion-powered system - Power management - Technical articles - TI E2E support forums
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