Some folks have so many Bluetooth peripherals in their possession that keeping track of their battery levels becomes a daunting task. Apple made things a little bit easier by implementing the Battery widget in the Today view, but if you’re anything like me, then you might find it to be more convenient to see that information directly in the Status Bar.
A number of Bluetooth headsets that I’ve used for phone calls in the past already supported Status Bar-centric battery level displays, but not all. A newly-released free jailbreak tweak called BTPower by iOS developer Karimo299 ensures that all your Bluetooth headsets exhibit this behavior for simplified battery level tracking.