It is intuitively called BatOn and is a quite straightforward app designed for a single purpose. The app lists your paired Bluetooth devices with their respective battery percentages left. You also get persistent notifications whenever a particular headset or speaker connects. However, the app isn’t compatible with every Bluetooth-equipped gizmo out there. It can only function that has handset functionality (i.e. accept/reject calls) or a GATT profile (usually Bluetooth 4.0+ Low Energy devices). That being said, it should work perfectly for most users out there who are merely looking to track a wireless earphone’s battery or a Bluetooth speaker, even some smartwatches. To get started with BatOn, head over to the Play store and download it. In spite of being one of a kind, the developer has decided to list it as a free app. Once done, launch it, and grant the location permission. That might seem unnecessary at first, but Bluetooth API on Android is part of the Location API which is why it is required for the app to work. Moving on, you’ll be greeted with a list of all the trusted devices you’ve already set up. Go ahead and connect a device. BatOn will immediately show up at the battery level and add a dedicated entry in the notifications. Heading into the settings from the left navigation drawer (swipe from the left edge to the right), you can tweak a couple of preferences. One of these is “measure frequency,” which basically allows you to customize the time period in which the app refreshes the battery levels. The thing is, BatOn doesn’t continuously update its metrics, thanks to the lack of native integration. Instead, you will have to tap the notification in order to get the latest number or define the appropriate frequency to avoid battery drains. You can also disable the notifications completely or only when the device has been disconnected. BatOn currently suffers a series of bugs and has caused connection issues with some Bluetooth devices. In my personal use, though, it worked fine and accurately displayed my wireless headset’s and speaker’s battery levels, but not my Pebble smartwatch. That’s all you need to know about BatOn. If you’ve any issues, or are stuck at some step, leave a comment down below. Related Read: 8 Ways to Fix Bluetooth Turning On Automatically on Android
