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Battery Life Calculator

Estimate battery runtime from capacity, average current draw and efficiency.

Result

Frequently asked questions

Is this battery life calculator free?

Yes. It is completely free, works in your browser and does not require an account.

Does it work on mobile?

Yes. EasyToolsCalc is responsive and works on phones, tablets and desktop computers.

Are my values saved?

No. The calculation runs locally in your browser. EasyToolsCalc does not save the numbers you enter.

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