💻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.

🤔 What Is Battery Life?

Think of battery life like estimating how many miles you can drive on a tank of gas - that's predicting runtime based on power consumption! Our advanced calculator handles smartphones, laptops, IoT devices, and more with sleep mode support. Calculate runtime, capacity, and current draw with precision!

Battery Capacity

Current Draw / Power

📱 Try Sample Devices

📱 Smartphone

4000mAh, 250mA average usage

💻 Laptop

50Wh, 15W power consumption

🔧 ESP32 IoT

2000mAh, sleep/wake cycles

🚁 Drone

5200mAh LiPo, 8A draw

🔦 LED Flashlight

2500mAh, 500mA LED

🔌 Power Bank

20000mAh, 18W output

💻Battery Life Calculator

🤔 What Is Battery Life?

Advanced Settings

Calculation Details

📱 Try Sample Devices