Battery level of a bluetooth classic device in iOS

I need to access the battery level of a bluetooth classic (not Bluetooth Low Energy) device, for example, of a bluetooth headphone or headset.


I know this information is available to iOS throught AVFoundation framework - AVOutputDevice interface - batteryLevel property.

See https://github.com/nst/iOS-Runtime-Headers/blob/master/Frameworks/AVFoundation.framework/AVOutputDevice.h


Is it possible? How?

Anyone got the answer? I'm trying to find a way to get this battery level, but with no results.
This information is not available through AVFoundation. I recommend asking in the Bluetooth section of the forums.
Battery level of a bluetooth classic device in iOS
 
 
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