The battery capacity is 300 mAh, so it will last 300 mAh ÷ 0.48 mA/day = 625 hours.

Mon, 04 May 2026 19:52:16 +0000

Understanding Battery Life: How 300 mAh Battery Capacity Translates to Long-Lasting Performance When it comes to portable electronics, one of the most crucial factors determining usage time is battery capacity—usually measured in milliamp-hours (mAh). If you’ve come across a device with a 300 mAh battery and see an estimate that it will last around 625 hours, the numbers behind this calculation reveal a lot about its efficiency and practical use. ### What Does 300 mAh Battery Capacity Mean? The term mAh (milliamp-hour) is a standard unit for measuring battery capacity. In this case, a 300 mAh battery indicates that it can theoretically supply 300 milliamps of current for one hour, or alternatively, it can sustain 1 amp for 300 seconds. More importantly, it means the battery can deliver continuous power for 300 hours under a standard draw of 1 milliamp. However, real-world scenarios involve actual current consumption, which depends on the device’s load, such as screen brightness, processor usage, and background processes.