Batery

Batery is an offline battery pack runtime calculator for Android. Enter capacity in mAh and continuous load in mA to read estimated hours and minutes as the fields change. Apply an efficiency derating and see the answer update immediately. Convert capacity between mAh, Ah, and Wh at a typed pack voltage. Compare two packs side by side at one shared load. Save named pack profiles locally, open a detail page to apply or share a plain-text summary, and filter a C-rate reference table. Prefs keep default voltage and decimal places. Everything stays on the phone — no account, no network, not a betting product.