A free app for Android, by Two Sqaure Interactive.
Bluetooth Device Battery Percentage Monitor is a utility that will help you to monitor the battery level of your Bluetooth devices. It is one of the best tools for this purpose, as it can be used with all kinds of Bluetooth devices, including those that use the Bluetooth low energy (BLE) protocol.
It is a simple and easy-to-use application that can be used on any Android phone or tablet running the latest version of the Android operating system.
You will be able to get all the necessary information from your device, including the battery level, the battery status, and the list and number of Bluetooth devices paired.
The application will also be able to provide you with the necessary instructions for using the application, as well as information about the battery.