Connect the power supply to the charging port by using the USB-C cable (included). Plug the power supply into a power outlet. The power supply and USB-C-to-C cable that come with the device are the best way to charge your HoloLens 2. The charger supplies 18W of power (9V at 2A). Using the wall charger supplied, HoloLens 2 devices can charge the battery to full in less than 65 minutes when the device is in standby.
Charging rate and speed may vary depending on the environment in which the device is running.
When the device is charging, the battery indicator lights up to indicate the current level of charge. The last light will fade in and out to indicate active charging.
When your HoloLens is on, the battery indicator displays the battery level in increments.
When only one of the five lights is on, the battery level is below 20 percent.
If the battery level is critically low and you try to turn on the device, one light will blink briefly, then go out.
Full details on device charging can be read here if more information is needed.
Place the HoloLens 2 on your head. If you wear eyeglasses, leave them on. The brow pad should sit comfortably on your forehead and the back band should sit in the middle-back of your head.
If necessary, extend the headband by turning the adjustment wheel, and then loosen the overhead strap.
The overhead strap isn't required, but it can make wearing HoloLens 2 more comfortable during long periods of use.
To detach the front of the overhead strap, unhook the strap and slide it through the retractable loop on the brow pad. To reattach it, pull out the loop and slide the strap back through.
To detach the back of the overhead strap, press the button below each connection tab and pull gently. To reattach it, push the connection tabs back into the slots until they click.
To turn on your HoloLens 2, press the Power button. The LEDs below the Power button display the battery level.
Note
To power on HoloLens 2 for the very first time, after unboxing, press and hold the power button for at least 4 seconds to turn it on. Next time you power on HoloLens 2, it’ll start after a short power button press.
To do this
To turn on
Perform this action
Single button press.
The HoloLens 2 will do this
All five lights turn on, then change to indicate the battery level. After four seconds, a sound plays.
To do this
To sleep
Perform this action
Single button press.
The HoloLens 2 will do this
All five lights turn on, then fade off one at a time. After the lights turn off, a sound plays and the screen displays "Goodbye."
To do this
To wake from sleep
Perform this action
Single button press.
The HoloLens 2 will do this
All five lights turn on, then change to indicate the battery level. A sound immediately plays.
To do this
To turn off
Perform this action
Press and hold for 5s.
The HoloLens 2 will do this
All five lights turn on, then fade off one at a time. After the lights turn off, a sound plays and the screen displays "Goodbye."
To do this
To force the HoloLens to restart if it is unresponsive
Perform this action
Press and hold for 10s.
The HoloLens 2 will do this
All five lights turn on, then fade off one at a time. After the lights turn off.
State of the Device
OFF
Action
Plug in USB Cable
HoloLens 2 will do this
Device transitions to ON with indicator lights showing battery level and device starts charging.
State of the Device
ON
Action
Remove USB Cable
HoloLens 2 will do this
Device stops charging
State of the Device
ON
Action
Plug in USB Cable
HoloLens 2 will do this
Device starts charging
State of the Device
SLEEP
Action
Plug in USB Cable
HoloLens 2 will do this
Device starts charging
State of the Device
SLEEP
Action
Remove USB Cable
HoloLens 2 will do this
Device stops charging
State of the Device
ON with USB cable plugged in
Action
Turn off Device
HoloLens 2 will do this
Device transitions to ON with indicator lights showing battery level and device will start charging
Number of Lights
Four solid lights, one light fading in and out
Battery Level
Between 100% and 81% (fully charged)
Number of Lights
Three solid lights, one light fading in and out
Battery Level
Between 80% and 61%
Number of Lights
Two solid lights, one light fading in and out
Battery Level
Between 60% and 41%
Number of Lights
One solid light, one light fading in and out
Battery Level
Between 40% and 21%
Number of Lights
One light fading in and out
Battery Level
Between 20% and 5% or lower (critical battery)