iTest Battery for Android

Measure a phone's actual mAh capacity by running real charging cycles and comparing logged energy to the device's design rating. iTest Battery, from Hugh Jeffreys, runs on Android as a utilities tool reporting a measured health value. It focuses on empirical charging-cycle analysis and returns a health score after repeated tests. Suited to second-hand buyers, repairers, and enthusiasts who need concrete capacity figures rather than a simple status label.

Can it verify a replacement battery's capacity?

The app accepts a manual battery capacity input so users can test custom or replacement cells, and it reports measured energy against that input. In addition, the tool supports very high-capacity cells, with explicit support up to 50,000mAh, and it flags whether the measured intake matches the declared capacity. This makes it practical for DIY repairers and buyers who need a numeric verification of a swap.

Does it run on typical Android devices without extra setup?

The tool targets current desktop-class Android devices and lists explicit platform requirements. Support is full on Android 7.0 and later, while devices running Android 5.0 and 6.0 receive limited functionality. During setup the app performs a compatibility check to confirm sensor reporting is available, which helps avoid misleading readings on unsupported hardware.

Is it safe to run on a daily-driver phone?

The developer states the app does not collect user data or share information with third parties, and the interface is described as lightweight and ad-free. In practice, the built-in compatibility check and readout-only reporting mean the tool observes charge behaviour rather than modifying system files, and it reports a health rating after gathering multiple test cycles to reduce single-run variability.

Do I need technical knowledge to get reliable results?

The app combines manual and automated steps: users can enter a battery's rated capacity or rely on the app's measurement routine, which produces a single health score after repeated cycles. Jeffreys' background in device repair informs the workflow, so enthusiasts and repair-minded buyers can use the tool without deep lab equipment, while more experienced testers can supply custom capacity values for tailored verification.

Practical diagnostic tool for buyers and repairers, with one notable caveat

iTest Battery delivers measurable capacity figures that suit second-hand phone buyers and DIY repairers who need a numeric check of replacements or ageing packs. It applies empirical charge measurements and requires only a few cycles to produce a rating. The main limitation is platform: limited support on older Android releases and reduced functionality on devices lacking compatible sensor reporting.