BluetoothLEDevice bluetoothLEDevice = await BluetoothLEDevice.FromIdAsync(args.Id);

            // Parse Basic Service by UUID
            var result = await bluetoothLEDevice.GetGattServicesForUuidAsync(Guid.Parse("0000fee0-0000-1000-8000-00805f9b34fb"));

            // Parse Battery Info Characteristic of this service
            var characteristic = await result.Services[0].GetCharacteristicsForUuidAsync(Guid.Parse("00000006-0000-3512-2118-0009af100700"));
            GattReadResult gattReadResult = await characteristic.Characteristics[0].ReadValueAsync();
            byte[] data;

            // Read received data to byteArray
            CryptographicBuffer.CopyToByteArray(gattReadResult.Value, out data);


            // Just convert it to string. I Receive HEX Value, but i don't know what it mean. It's not battery percentage.
            // 0F-4F-00-E2-07-04-0E-10-27-11-0C-E2-07-04-0E-13-19-16-0C-64
            Debug.WriteLine(BitConverter.ToString(data));