Measure battery capacity in mAh and receive a health rating based on real charging behaviour, using three full charge cycles as the test method. Created by Hugh Jeffreys, this Android utility targets buyers, DIY repairers, and tech enthusiasts who need hardware verification. It monitors charging telemetry, runs an integrated compatibility check, and accepts manual capacity input up to 50,000mAh. Best for people who plan to validate replacement batteries or assess used devices before a sale.

How the app derives a battery health rating

iTest Battery bases its assessment on empirical charging-cycle data rather than the device's generic system estimate. The app monitors charging telemetry across standardized cycles and produces a health rating and an mAh estimate. It also offers a manual capacity input for very large cells, which lets the tool test batteries up to 50,000mAh and verify third-party replacements against their claimed capacity.

How it runs on Android devices and what it requires

The tool operates while the device charges and includes an integrated compatibility check to ensure accurate reporting on supported hardware. Full support is provided for Android 7.0 and later, with limited functionality on Android 5.0 and 6.0. Because the process depends on real charging sessions, users must let the phone complete the test cycles while plugged in for the app to produce its final estimate.

Who can read and act on the results

The app is aimed at tech enthusiasts and DIY repairers, which matches the developer's background in device repair and advocacy. The interface is reported as ad-free and focused on technical output, and the presence of real-time telemetry and manual input options means some familiarity with batteries and charging behaviour helps interpret results. Casual buyers who expect instant summaries may find the required testing steps demanding.

Clear specialist tool for hardware verification, not casual quick checks

iTest Battery serves people who need empirical verification of a device's battery condition, especially those checking replacement parts or used phones. It targets users willing to run multi-session checks and read charging telemetry. For anyone seeking a quick, one-minute indicator without test cycles or technical interpretation, the app's test-focused approach is a mismatch despite its precise reporting intent.