Accu​Battery

Contains adsIn-app purchases
4.7
573K reviews
10M+
Downloads
Content rating
Everyone
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About this app

Accu​Battery displays battery usage information, and measures battery capacity (mAh) based on science.
 
❤ BATTERY HEALTH
 
Batteries have a limited lifespan. Every time you charge your device, it wears out the battery, lowering its total capacity.

- Use our charge alarm to remind you to unplug your charger.
- Discover how much battery wear was endured during your charge session.
 
📊 BATTERY USE
 
Accu​Battery measures the 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. Android calculates battery usage using pre-baked profiles that device manufacturers provide, like how much power the CPU uses. In practice however, these numbers tend to be highly inaccurate.
 
- Monitor how much battery your device is using
- Know how long you can use your device when it’s active or in standby mode
- Find out how much power each app uses.
- Check how often your device gets woken up from deep sleep.
 
🔌 CHARGE SPEED
 
Use Accu​Battery to find the fastest charger and USB cable for your device. Measure the charging current (in mA) to find out!
 
- Check how fast your device is charging when the screen is on or off.
- Know how long it takes to charge your phone and when it’s finished.
 
HIGHLIGHTS
 
- Measure real battery capacity (in mAh).
- See how much wear your battery sustains with each charge session.
- Look up the discharge speed and battery consumption per app.
- Remaining charge time - know how long it takes before your battery is charged.
- Remaining use time - know when you will run out of battery.
- Screen on or screen off estimations.
- Check the percentage of deep sleep, when the device is in standby mode.
- Ongoing notification for real time battery statistics at a glance.
 
🏆 PRO FEATURES
 
- Use Dark and AMOLED black themes to save energy.
- Access to historical sessions older than 1 day.
- Detailed battery statistics in notification.
- No ads
 
We're a small, independent app developer with a focus on quality and passion for battery statistics. AccuBattery doesn’t require access to privacy-sensitive information and doesn't make false claims. If you like the way we work, support us by upgrading to the Pro version.
 
Tutorial: https://accubattery.zendesk.com/hc/en-us
 
Need help? https://accubattery.zendesk.com/hc/en-us/requests/new
 
Website: http://www.accubatteryapp.com
 
Research: https://accubattery.zendesk.com/hc/en-us/articles/210224725-Charging-research-and-methodology
Updated on
Nov 6, 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
Location, App activity, and Device or other IDs
This app may collect these data types
Location, Personal info and 3 others
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

4.7
553K reviews
S
January 11, 2026
Keeps popping up the charged notification *over & over* even after dismissing it. I've dismissed it several times over the past several minutes (seems to go off roughly every minute) and it just keeps coming right back. And since requests made a couple years ago for minor changes to make the alarms more useful have also apparently been deemed not worth the, again, minor effort to implement, it seems this app is not only not improving over time, but has become a nuisance. Might be time to move on
2 people found this review helpful
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Bill Dale
December 15, 2025
My last phone stopped charging automatically when it reached 80%, for maximum battery life. This app only alerts me with a wimpy, 1- second chime that is easy to miss, allowing it to continue up to 100%. I would rather have it stop automatically, or at least be loud and last for 10 seconds so I won't miss it. I wish I it would also alert me LOUDLY when charge drops to 20%, to remind me to plug in. All phones should be able to be limited to 20%- 80% for maximum battery life.
211 people found this review helpful
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Yoga Sido
October 26, 2025
This is incredibly frustrating. Why does the app suddenly shut down its background processes only when charging? Other apps don't, and they still run in the background without any issues. I have excluded this app from Battery Safe Mode to none, meaning it should always be running under any circumstances (unless the phone is turned off), but that is not the case. If this continues, supporting tools such as battery charging alarms will be useless, because the application is completely closed!
201 people found this review helpful
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What’s new

• Fixed overlay rendering behind rounded screen corners.
• Charging page: show why a charge cycle is not included in battery health calculation.
• Health page: fixed display of "charged for _ mAh total".
• Charging / health: improved handling of long sessions with disabled charging (like Sony's 80% charge limit) - works now for calculating health.
• Updated and improved purchase handling.