Generic Battery Drainer

626 reviews
Content rating
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About this app

It drains your battery. That's pretty much it.
How fast depends on the size of your battery and your phone’s processor
A smaller battery or faster processor means faster draining

Generic battery drainer drains your battery by performing any combination of:

- Intensive CPU work
- GPU computations(May also put load on CPU)
- Keeping the torch on
- Maximizing screen brightness with Wake Lock
- Continuous GPS requests
- Continuous WiFi scanning
- Continuous Bluetooth scanning

Choose which functions you want to run and which permissions you want to grant. If you don't feel comfortable giving GPS permission for example, you can still run the other drainers.


Some features require permissions to run. You can choose which you are comfortable with and deny all the others. CPU and GPU load do not require any permissions on. No data is stored, shared or collected in any way.

Needed for turning the led torch(flash) on and keeping it on.
Access fine location:
Needed for making GPS requests.
WiFi state:
Needed for making WiFi scan requests.
System settings:
Needed to maximize brightness and keep the screen on even when this app is in the background

How it works:

When you press b>Start, the app will launch a foreground service with the selected drainers. A menu will then appear in the notification bar. You can minimize the app or even close it as long as the notification menu is not dismissed. Stop draining by pressing Stop in the notification menu.
Warning: If you turned on CPU or GPU load, your phone will run very slowly when using other apps!


CPU load:
Spawns one thread for every core in your processor and does a combination of Integer, Floating Point and Double Precision math continuously.

GPU load:
Performs parallelized matrix multiplication of random Floating Point numbers on the GPU. Excess load will also cause the CPU to be utilized.
Keeping the torch light on uses battery, of course.
Screen and Wake Lock:
Keeps the screen at Max brightness and always on, even if this app is minimized or closed. Pressing stop returns the screen brightness to it's original condition.
GPS, Bluetooth and WiFi:
A scan is performed for each utility and when it finishes, a new scan is started. The continuous scanning drains the battery.

Tips for use:

- If you want to drain your battery as fast as possible, turn on all options.
- CPU/GPU load will make your phone less responsive and slower. To drain the battery while using your phone to do other things like messaging, watching videos or playing games, do not enable CPU/GPU load.
- Your phone might get warm while using this app. Be careful and check the in app battery status display from time to time.
- You can also set cutoff limits in the settings page.
Updated on
Jul 14, 2018

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.
No data shared with third parties
Learn more about how developers declare sharing
No data collected
Learn more about how developers declare collection

Ratings and reviews

603 reviews
Derek Matuszewski
November 26, 2023
Update 11/26/2023: Still works great, just have to make sure to disable android battery optimization for the app and leave the app open when you shut the screen off. Works well for calibrating your battery. It appears the developer may have abandoned the app as it hasn't been updated since 2018. I just started getting a notification that the app is made for an older version of Android. It's just a matter of time before it gets blocked. Hoping the developer updates it.
8 people found this review helpful
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December 11, 2020
It does exactly what it says, and I like that it lets you toggle individual actions. It drained my Galaxy S7 in about 75 minutes, with all options except the LED light turned on. I can't believe this is totally free without ads. Suggestion to the dev: Offer ads, but make it another option that must be turned on. Downloading the ads would waste more battery, you'd make a little bit of change, and leaving it off by default would leave nobody mad at you.
148 people found this review helpful
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A Google user
October 12, 2019
Does what it says. Discharged my Galaxy s6 as fast as the fast charger is able to charge it! Be sure to set the stop threshold tho, it will make your phone unusably laggy and you may not be able to turn it off without attempting to reboot or waiting for it to die.. Would be nice to have an option to limit the resource usage to leave a bit of room for the system to breath so the phone doesn't become completely unresponsive.
15 people found this review helpful
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What's new

Initial release of Generic Battery Drainer, a generic battery drainer app that drains your battery. Generically.