Dell M318WL User Manual page 41

Powering Your Projector
1 Connect one end of the power-output cable to the power-out port of the
power companion.
2 Connect the other end of the power-output cable to the DC input
connector of your projector.
3 Press the power button to start powering your projector.
NOTE:
The battery-status light blinks amber when the power
companion battery is low.
Using Your Projector 41