accumulator
alkaline
art
auto
background
battery
cable
charge
charger
charging
color
colorful
contour
design
eco
ecology
electric
electrical
electricity
energy
environment
equipment
flat
fuel
full
green
hybrid
icon
illustration
indicator
isolated
level
line
linear
lineart
low
outline
plug
power
recharge
sign
symbol
technology
transparent
transportation
vehicle
voltage