Batteries have a limited lifespan, every time you charge your device it wears out the battery, lowering it's total (design) capacity.
Now, you can reduce wear, spend less time with your device attached to its charger and get more out of your mobile life without constant concerns about the low battery level.
Use Battery Guru to find the fastest charger and USB cable for your device. Measure the charging current (in mA) to find out! The app will show you max current achieved while charging.

Choose status bar indicator based on your need
• How current mA
• Temperature
• Battery level
• And combination of them

Charging/Discharging info
• Section dedicated for battery stats including charge/discharge percentage and estimated time for full charge/discharge.
Display information about battery: voltage, temperature, capacity, and battery health status, battery charger history…
The section also provides info about App statistics, wake-locks and deep sleep/awake time of the device.

• Charging records are also part of the info section, this will tell you how much you take care of the device battery is your charging healthy or not. Charging records also have advanced info to show your charging history for the last 3 months.

Protection
• At the protection section you can set reminders for battery temperature and charging limits. As we know those are two unwanted factors that degrade our batteries. Use suggested protectors to prolong your battery life and keep it in nice condition.

Health
• Get estimated battery health at any time. Health section also contain useful tips for saving our beloved battery, everything is well described and "human-readable".

Save
• Save section contains saving modes, two of them are already managed and unchangeable, while one remains customizable. Manually managed mode automatically reads the device current state.

v2.2.2
- Updated all alarms implementation
- Added 8 notification sounds (change for each notification channel through the system)
- Updated rate app dialog
- Updated graphs (removed averaging)
- Removed unnecessarily libraries
- Removed AppLovin ads
- Minor bug fixes and improvements

Adfree / Premium mod version

System Requirements:
Requirements: Android 6.0+

Home Page - https://play.google.com/store/apps/details?id=com.paget96.batteryguru&hl=en