Battery Life Calculator
Calculate battery runtime, capacity, and power consumption for smartphones, laptops, IoT devices, and more. Advanced calculator with sleep mode support and unit conversions.
๐ฑ Try Sample Devices
๐ฑ Smartphone
4000mAh, 250mA average usage
๐ป Laptop
50Wh, 15W power consumption
๐ง ESP32 IoT
2000mAh, sleep/wake cycles
๐ Drone
5200mAh LiPo, 8A draw
๐ฆ LED Flashlight
2500mAh, 500mA LED
๐ Power Bank
20000mAh, 18W output
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