The battery state in <BatteryInfo>.
channelId: number
Zero-based channel.
chargeStatus: "none" | "charging" | "chargeComplete"
Charging state.
adapterStatus: "none" | "adapter" | "solarPanel"
What the battery charges from.
voltage: number
Battery voltage, unsigned; the unit is not established.
current: number
Battery current, signed; the unit is not established.
temperature: number
Battery temperature, signed; the unit is not established.
batteryPercent: number
Charge level in percent.
lowPower: number
Low battery flag.
batteryVersion: number
Battery type as a number; the firmware does not name the values.