Table 2 Power voltage demands of different devices

Head-mounted Display

MP3750

5 V

<1.25 W

Electronic Compass

AAA batteries

3.6 V~5 V

0.1 W

Web Camera

Through USB

Unknown

Unknown

RTK Rover Receiver

MP3750

10 V~32 V

4.2 W

RTK Rover Radio

Through RTK Rover Receiver

10.5 V~20 V

3 W

RTK Base Receiver

Integrated Internal battery

7.4 V

<8 W

User Command Input

AA batteries

3 V

Unknown

Laptop

Integrated Internal battery

11.1 V

17.76 W