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Android Know your Android Max Battery Capacity/Battery Health without using third party battery health apps [for Rooted users only]

Raddddjur

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Requirements:
*Rooted Android Phone, e.g. Magisk
Note: Devices may vary
*ZArchiver or other file manager
*File Editor, e.g. QuickEdit
*Brain, otherwise I'm not responsible for system file loss or deleted.

Step 1. Root your android phone by using Magisk (tutorial for magisk rooting method can be found by using the search bar)

Step 2. Open any file manager, I prefer ZArchiver for this method

Step 3. Currently using ZArchiver, to have a root priviledge, access the settings by accessing triple dot at the upper right on the screen, and access Settings

Step 4. Currently open on Settings, Tap on ROOT & Turn on "File Operations".

Step 5. Go back to your Internal Storage directory

Step 6. Press back button at the left upper corner of the screen until you reach "/" directory.

Note: If there is a Magisk permission, just tap "Grant" everytime it pops up.

Step 7. In the list of "/" folders, access "sys" folder, then access "class" folder, then access "power_supply" folder, then access "battery" folder, then lastly, access "charge_full" file.

Step 8. While opening "charge_full" file, select your prefered note editor, I'm using Quick Edit for this method.
Note: Just grant Magisk permission when it asks.

Step 9. While you open its file, it shows a number of figure
e.g. 494200, that means you have 4,942 mAh battery (opting out 2 zero's) at 100% capacity

Step 10. To calculate its battery health
e.g.: I have POCO X4 GT, which has 5,080 mAh battery
then 4942 ÷ 5,080 = 0.9728 or 97% battery health.
----- Nothing follows -----

Screenshots will be uploaded later.
 
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