Device Charging Time Calculator — Estimate Time from Capacity and Power
Enter battery capacity, actual charging power, starting and target charge, and efficiency to estimate energy and charging time.
Estimated charging time
Energy to add
Input energy needed
mAh is converted to Wh using voltage ÷ 1,000, then adjusted for the charge fraction and efficiency.
Enter the power the device actually accepts, not just the charger label. Charge tapering, temperature, the cable and using the device can make the real time longer.
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