Battery Life Calculator
Calculates battery runtime based on capacity, discharge rate, and device power consumption. Determines whether battery suits application.
Difficulty:beginner
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Did You Know?
Battery capacity decreases ~2% per year from self-discharge; year-old battery might be 20% lower capacity.
References
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100% Free
No sign-up ever
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Accurate
Verified formulas
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Instant
Results as you type
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Mobile Ready
All devices