This app _tries_ to illustrate battery stage of the bluetooth devices. Bluetooth instrument MUST has Fingers-Free profile (settle for, reject mobile phone calls) or GATT profile (most incessantly 4.0+ Low Energy devices).
To recheck battery stage moral faucet on the notification.
Recheck added for pre O androids
Tried to repair crushes on O+ androids. OMG, I so disfavor android env: Service, IntentService, JobIntentService, JobScheduler, WorkManger and nothing works nicely.
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