Battery Guard

Experiments on lithium batteries prove that shallow charging and discharging can significantly extend the cycle life of the battery, if the loss from 0% to 100% charging is recorded as 100%
* Charge to 90%, only 52% loss
* Charge to 80%, only 27% loss

As a battery saver, Battery Guard extends the cycle life of the battery by setting high and low thresholds and alerting the user when the power reaches the threshold, so that the battery maintains a shallow cycle working state.

App features are as follows:
* Light and compact App, less than 200k.
* Support text, vibration and voice alarm when the power reaches the threshold.
* Voice alarm uses TTS engine and supports custom voice.
* Backend records daily battery cycle loss and generates daily, weekly and monthly statistical charts
* Support charging and discharging details, including charts of power, temperature, current, etc.

In addition to the basic battery-related statistics, the following functions are supported.
* Support daily, weekly, and monthly screen time statistics.
* Support daily, weekly, and monthly temperature range statistics.
* Customizable notification bar icons and functions

Battery monitoring requires background operation, please refer to the help to reserve the background correctly.