How to disable battery saving when battery level is below 15%? I used an old tablet to operate a smart home. In order to work continuously, I took the battery out of it and connected it to a 4V power source, which works continuously. Based on the measured battery resistance between GND and BSI, I soldered a 10k resistor. After this treatment, the tablet works properly, only despite the constant voltage level, the battery level drops after a few hours to 1%. I would not have a problem with it if the battery saving function did not limit the capabilities of the device. Is there any way to turn it off? The tablet has root access.
You may be able to mock the battery level to 100% by using ADB by the following command:
adb shell dumpsys battery set level 100

The battery level should then stay at 100%.