Battery Fuel Gauge IC extends Li-Ion battery run-time.

Housed in 1.5 x 1.5 x 0.5 mm, 9-ball WCSP package with integrated sense resistor, Model bq27421 reports remaining battery capacity, state-of-charge, and battery voltage. Impedance Track™ technology provides battery capacity measurement with 99% accuracy, and automatically adjusts for battery aging, self-discharge, temperature, and rate changes. Supporting embedded or removable Li-Ion batteries, plug-and-play gauge

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