Battery Life Calculator - How long will it power a circuit? mah

The video tutorial explains how to interpret the milliamp hour (mAh) rating of a battery, which indicates its capacity to provide current over time. It discusses factors affecting real-life battery performance, such as internal resistance, age, and temperature, which can reduce the expected lifespan. A formula is provided to estimate battery life by dividing the battery's capacity by the circuit's current demand, though actual performance may vary.

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