BatteryGauge
data class BatteryGauge(val voltageMv: Float, val currentMa: Float, val healthPct: Float?, val chargeLevelPct: Float?)
Fuel-gauge reading from the device's "full battery info" characteristics. Read on demand via DeviceSession.readBatteryGauge; distinct from the coarse SIG Battery Level percentage carried on DeviceSession.battery.
The device serves millivolts and milliamperes.