Battery Capacity vs. Battery Life vs. Health: What’s the Difference?

Whenever you evaluate a new smartphone, laptop, or portable charger, you are bound to encounter the terms “battery capacity,” “battery life,” and “battery health.” While they are frequently used interchangeably in casual conversation, they measure distinctly different aspects of your device’s power system. Understanding how these three metrics interact won’t just help you estimate your device’s daily performance, it will also help you identify exactly when it’s time for a replacement.