Battery Life Calculator
Calculate how long your battery will last based on capacity and power consumption
How to Use
Required Information
- Battery Capacity:
The capacity of your battery in milliamp-hours (mAh)
- Power Consumption:
The power draw of your device in watts (W)
Common Battery Voltages
- Li-ion Batteries:
3.7V (single cell) or 7.4V (dual cell)
- Laptop Batteries:
11.1V (3 cells) or 14.8V (4 cells)