If you use an LG, Samsung, or even OnePlus device, this feature isn’t news. But for those who use other Android phones, a new feature is coming to your devices. Google is planning to add support to display battery information for Bluetooth devices. A report from XDA-Developers says the feature will be in an API that would be part of a future version of Android. Google has added a new “method” it calls “getBatteryLevel()” as part of the “BluetoothDevice” class. This means you’ll get to see the battery level percentage of a supported Bluetooth device.
Source: GSMArena