accumulator
adapter
alternative
background
battery
blackout
charge
charger
charging
compact
computer
copy
device
devices
electric
electricity
electronic
emergency
energy
gadgets
generator
home
indoors
laptop
mobile
object
outage
phone
plugged
portable
power
recharge
room
safety
shortage
small
smartphone
smartwatch
solar
source
space
station
tablet
technology
text
usb
volt
voltage
wall
watt