Part Number: BQ24196
How to quantitatively calculate the total charging time for a 2000mAh battery.
Especially, how to figure out the battery SOC of the turning point from CC mode to CV mode.
What's more, how to calculate the charging time in CV mode.
a. battery regulation voltage is 4.25V.
b. fast charging current is 2.5A.
c. charging termination current is 250mA.
Inherently, the charger doesn't calculate state of charge. In order to calculate accuracte SoC, various inputs can be fed into a gauging algorithm such as battery voltage, current (coulomb counting) and temperature; the charger doesn't perform this algorithm. We do have single-cell gas gauges that perform SoC and run-time calculation using these inputs; in particular, for calculating charge time in CV mode, you would need to keep track of the current flowing into the battery (voltage based gauging will be hard during CV phase). I recommend starting by reviewing a gauge such as the bq27542 or bq27426.
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