Battery Guru - Battery Monitor - Battery Saver APK

Battery Guru - Battery Monitor - Battery Saver is an Android utility that focuses on detailed battery statistics, real time monitoring, and charging analysis. It is especially suited to users who care about battery health, want to understand why their phone drains, or like to inspect how fast and how hot their device charges.

Rich real time information about your battery

Battery Guru gives a far deeper view of your battery than the stock percentage indicator. It shows live readings for charge level, temperature, and whether your phone is charging or discharging. Beyond that, it monitors hardware data such as voltage, electric current in milliamps, and power in watts.

Weekly graphs help you review how these values change over time, so you can spot patterns such as hotter charging days or times when the device consistently pulls more power. For anyone who likes numbers and graphs, the breadth of data here is a clear strength.

Health tracking and wear over time

A major focus of Battery Guru is long term health. The app uses historical charging and usage data to estimate your battery’s actual capacity in mAh and to track a health percentage as the battery ages. It also analyzes wear for each charge cycle and records the highest temperature reached during charging sessions.

To help you keep conditions gentler on the battery, you can set alerts when the device reaches full charge or when temperature crosses a threshold. Over weeks and months, this combination of health percentage, estimated capacity, and wear per cycle can show whether your daily habits are putting extra stress on the battery.

Usage analytics and wakelock detection

Battery Guru does not stop at health metrics. It also measures real power usage so you can see how long the phone lasts during active use versus standby. The app breaks down consumption by application, which makes it easier to catch software that quietly drains power in the background.

An especially useful feature is its attention to wake events. Battery Guru tracks how often the phone wakes from deep sleep, highlighting situations where an app keeps the device active unnecessarily. In practice this makes it much easier to uncover wakelocks, both long-running and brief ones, that can cause unexpected battery drain over time.

Charging sessions, chargers, and smart alerts

Charging behavior is another area where Battery Guru goes into detail. The app records individual charging sessions, including speed and temperature, then lets you review that history later. You can use this to compare how different chargers and USB cables perform, since the app measures charging speed and shows the maximum power reached during fast charging sessions.

Battery Guru can also estimate how long it will take for the battery to reach full charge based on recent data, which is helpful if you want a quick idea of when the phone will be ready to unplug.

Notifications and alarms round out the charging tools. You can get sound alerts when the battery reaches a chosen high level, when it drops too low, or when temperature or voltage move outside your comfort zone. Status notifications can show icons and percentage indicators so you can glance at key info without opening the app.

One caveat is how the app labels “overcharge” situations. Battery Guru currently marks normal long charges that stay above roughly 80 percent for more than eight hours as overcharging. On modern phones using the official charger and cable, the charging system typically stops feeding current into the battery once it is full and runs the device from the power adapter, topping up the cell only when voltage dips. Because of that, many users will see these sessions as safe, and the overcharge label can feel more alarming than necessary, even though the underlying session tracking is still helpful.

Home screen widgets and Pro-only extras

For quick access, Battery Guru includes home screen widgets that show current charge level, temperature, and charging status. This gives you a live battery indicator right on the home screen without opening the main app.

A paid Pro tier adds a few extras. Subscribers get an ad-free experience, more extensive historical data, and additional performance insights that build on the existing statistics. Pro also unlocks custom overlays, which place live battery readings on top of whatever else you are doing, so you can keep an eye on temperature or charging speed while using other apps.

The free version already covers core monitoring, including health estimates, usage analysis, and alarms. Because of that, some users may feel the subscription price does not quite match the incremental benefits, even if the extra history and overlays are appealing to those who really rely on detailed analytics.

Overall impression

Battery Guru is a data-focused battery companion that prioritizes insight over gimmicks. It shines when you want to understand why your battery behaves a certain way, which apps are responsible for drain, and how your charging habits affect long term health.

The extensive statistics, wake detection, and health tracking make it a strong choice for power users and anyone who cares about preserving their battery. The slightly confusing “overcharge” label and a somewhat less convincing subscription value are noticeable drawbacks, but they do not overshadow how capable the free version already is as a monitoring tool.