Hololens2 バッテリー

こんな感じでUnityで取得

using System.Collections;
using System.Collections.Generic;
using System.Text;
using UnityEngine;

#if WINDOWS_UWP
using Windows.Devices.Power;
#endif

public class BatteryInfo : MonoBehaviour
{
    [SerializeField] float battery = -1;
    [SerializeField] string reportStr = "";

    // Start is called before the first frame update
    void Start()
    {
        InvokeRepeating("CheckBatteryInfo", 1, 10);
    }

    void CheckBatteryInfo()
    {
        StringBuilder stringBuilder = new StringBuilder();
        stringBuilder.AppendLine("Battery: ");

#if WINDOWS_UWP
        var aggBattery = Battery.AggregateBattery;
        var report = aggBattery.GetReport();

        float per =System.Convert.ToSingle(report.RemainingCapacityInMilliwattHours) / System.Convert.ToSingle(report.FullChargeCapacityInMilliwattHours); // 0 - 1.0f
        battery = per;

        stringBuilder.AppendLine("DeviceId: " + aggBattery.DeviceId.ToString());
        stringBuilder.AppendLine("Status: " + report.Status.ToString());
        //stringBuilder.AppendLine("FullCharge: " + report.FullChargeCapacityInMilliwattHours.ToString());
        //stringBuilder.AppendLine("Remaining: " + report.RemainingCapacityInMilliwattHours.ToString());
        stringBuilder.AppendLine("Charge Rate: " + report.ChargeRateInMilliwatts.ToString());
        stringBuilder.AppendLine("Design Capacity: " + report.DesignCapacityInMilliwattHours.ToString());
#endif
        reportStr = stringBuilder.ToString();
    }

    public float GetBattery()
    {
        return battery;
    }
    public string GetReportString()
    {
        return reportStr;
    }
}

参考

https://forums.hololens.com/discussion/3133/is-there-a-way-to-get-the-battery-level-from-the-hololens-through-unity

https://docs.microsoft.com/ja-jp/windows/uwp/devices-sensors/get-battery-info