Battery Charge Calculator

Calculate battery charging time, required current, C-rate, and charging efficiency for various battery types.

Calculate

Time = Capacity / Current | C-Rate = Current / Capacity

Battery Capacity (mAh)

Current Level (%)

Target Level (%)

Charging Efficiency (%)

Charge Current (mA)

Charge Time

4.71

Hours

282

Minutes

0.20C

C-Rate

4000

mAh to Charge

Energy Requirements

Theoretical Time4.00 hours

Energy Stored14.800 Wh

Input Energy Required17.412 Wh