AccuBattery is an app designed to help users protect their battery health, display battery usage information, and measure battery capacity based on scientific research. The app offers several features to help users prolong their battery lifespan and optimize their device's battery usage. One of the key features of AccuBattery is its ability to monitor battery health. The app informs users that batteries have a limited lifespan and that every time a device is charged, it wears out the battery, lowering its total capacity.

AccuBattery also measures actual battery usage using information from the battery charge controller. Battery usage per app is determined by combining these measurements with information on which app is in the foreground. The app allows users to monitor how much battery their device is using, know how long they can use their device when it's active or in standby mode, find out how much power each app uses, and check how often their device gets woken up from deep sleep. Another feature of AccuBattery is its ability to help users find the fastest charger and USB cable for their device.

AccuBattery offers several highlights, including measuring real battery capacity (in mAh), providing a charge alarm to prolong battery lifespan, showing how much wear the battery sustains with each charge session, looking up the discharge speed and battery consumption per app, providing remaining charge time and remaining use time, offering screen on or screen off estimations, checking the percentage of deep sleep when the device is in standby mode, and providing an ongoing notification for real-time battery statistics at a glance. The Pro version of AccuBattery offers additional features, including dark and AMOLED black themes to save energy, access to historical sessions older than one day, detailed battery statistics in notification, and no ads.

AccuBattery is a small, independent app developer with a focus on quality and passion for battery statistics. The app doesn't require access to privacy-sensitive information and doesn't make false claims. Users can find a tutorial and help on the AccuBattery website.