Because of this, a developer has tried to solve this issue by developing an Application called BatON. BatON -also called Battery ON- is an Android application that displays the battery percentage of connected devices to your phone.
Before we get started, there is one overarching limitation here. This BatON will only work with Bluetooth devices that have handset functionality (i.e. accept/reject calls) or a GATT profile (usually Bluetooth LE devices).
On first opening the app, you are asked to grant it location permission. This was really confusing at first, until I read into the Information section. As you can see in that screenshot above, the developer states that the Bluetooth API is part of the Location API, thus why that permission is required for the app to work. Anyway, that’s no problem for now.
After that, you’re presented with a list of all of your connected devices. In the second screenshot above, you can see what I was talking about when I mentioned the limitation. If your connected device cannot receive and reject calls, BatON will still list out the device and its battery percentage; but it will just display 100% without reducing.
Coming to the settings, you’re presented with meager pickings. I think this is a good thing; BatON is not trying to do too much here, nor is it trying to throw too much stuff at its users. You have two things to check out: you can check via the notification bar and the auto measure frequency.
Now, to avoid the Notification from displaying stats, I highly recommend toggling on the “Close notification on disconnect” in setting. It’s pretty self-explanatory, but it’s disabled by default which is kind of a head-scratcher.
The auto measure section is where you set the frequency that the app will use to check on the connected devices’ battery levels. The default is set to three hours, and I believe that is because you can manually remeasure the devices by tapping the notification or item entry in the main menu. Personally, I will probably switch to something like 30 minutes or an hour because I will forget to manually refresh. Yea!
Finally, BatON works well with Bluetooth v4.0. It doesn’t work properly with Bluetooth versions lower than v4.0. BatON is officially on Google Playstore; it’s free to download and it doesn’t contains Ads.
WHERE CAN I DOWNLOAD BATON?
You can download BatON from Google Playstore Here.