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For Windows Developer

Google Windows Management Interface.
use Battery Percents Properties

  • Key = {104EA319-6EE2-4701-BD47-8DDBF425BBE5} 2
  • Type = 3 (Byte)

Data is in percents

Look the PowerShell Script

Note

The project use a wrong way to get battery level(Headphone/Headset)
I try to get Bluetooh headphone battery level by BLE GattService, but this is not a good idea.

For headphone/headset

Headphone/Headset can use HFP to report battery level to ios. We should use hfp to get headset's battery level.
Apple extend HFP command, help headset report a headset state change:

  • Request: AT+XAPL=[vendorID]-[productID]-[version],[features]
  • Response: AT+IPHONEACCEV=[Number of key/value pairs ],[key1 ],[val1 ],[key2 ],[val2 ],...

Unfortunately, microsoft no provide api. You have to code Bluetooth Driver to supersed Microsoft Driver.

BluetoothLEBatteryMonitor

Windows BluetoothLE Battery Monitor
Version 2.0
screenshot1
screenshot2

Note

Use Universal Windows Platform (UWP) Windows Runtime API at Windows Forms

TODO

  • BEL feat: Replace timer loop to get BatteryLevel with event listener

References