environmental
adapter
audio
battery
cable
charge
clip
clip art
clipart
connect
connection
cord
current
danger
death
design
disconnect
eco
ecology
electric
electrical
electricity
energy
environment
equipment
frame
hardware
icon
illustration
industrial
internet
jack
minus
negative
off
plate
plug
plus
positive
power
sign
socket
supply
symbol
technology
unplug
unplugged
voltage
wire