Amperes: Battery Charge Info

Amperes: Battery Charge Info reads the real current, voltage and coulomb counter that Android publishes, so every number it shows is measured at the battery terminals — not estimated from how fast the percentage moves.

LIVE
Watch current, power, voltage, temperature and charge level update every second, with rolling charts of the last two minutes. Green means charge flowing in, orange means flowing out.

FOUR TESTS, ONE TAP EACH
• Charging speed — average and peak amps and watts, charge added, temperature rise
• Drain rate — what a game, a call or idle time really costs in milliamps and watts
• Battery health — measured full capacity against the factory rating
• Compare chargers — label each run and rank every charger and cable you own

Tests keep sampling with the screen off, which is when a charging measurement is cleanest. Pulling the charger mid-test ends the run with the reason recorded instead of a meaningless number.

RESULTS THAT STAY
Every run is saved with its full sample history, drawn as current, voltage and temperature charts. Statistics across all runs, plus a ranked charger table.

EVERYTHING YOUR BATTERY REPORTS
Design capacity, charge cycles, health, energy remaining, charging policy, and a table showing exactly which sensors your device exposes.

HONEST ABOUT HARDWARE
Some manufacturers report milliamps instead of microamps or flip the sign. Amperes detects this automatically, and anything your device doesn't provide is shown as unavailable rather than as a fake zero.

From CrioSoft, makers of Amperes for iPhone.