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About Battery Calculator
Estimate charge time and battery life from mAh.
Battery Calculator estimates charging time and runtime from capacity (mAh), current draw and efficiency. Compare devices, plan power banks, and keep a history of results. A handy offline utility for everyday power questions.
What's new in the latest
Last updated on Jun 10, 2026
Minor bug fixes and improvements. Install or update to the newest version to check it out!
Videos and Screenshots
Super Fast and Safe Downloading via APKPure App
One-click to install XAPK/APK files on Android!