Smartphone
Battery Capacity (mAh): 3,000; Charger Output Current (mA): 1,000; Initial Charge (%): 20
Charge Needed (mAh): 2,400; Estimated Charge Time (Hours): 2.4; Estimated Charge Time (Minutes): 144
Battery Charge Time Calculator
Other0.0(0)
Estimates the charging time for a battery based on its capacity, the charger's output current, and the battery's initial charge level.
How To Use
How to use this calculator
Start with your values, or try a preset.
Step 1
Enter Battery Capacity (mAh), Charger Output Current (mA), and Initial Charge (%) in the units shown.
Step 2
Read Charge Needed (mAh), Estimated Charge Time (Hours), and Estimated Charge Time (Minutes) in the results panel. Results update as you change the inputs.
Step 3
Choose a preset to load an example, then adjust the values for your situation.
Worked Examples
Example calculations
See the inputs and their calculated results.
Tablet
Battery Capacity (mAh): 8,000; Charger Output Current (mA): 2,000; Initial Charge (%): 10
Charge Needed (mAh): 7,200; Estimated Charge Time (Hours): 3.6; Estimated Charge Time (Minutes): 216
Laptop
Battery Capacity (mAh): 5,000; Charger Output Current (mA): 3,000; Initial Charge (%): 30
Charge Needed (mAh): 3,500; Estimated Charge Time (Hours): 1.166666667; Estimated Charge Time (Minutes): 70
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