aa
accumulator
alkaline
background
batteries
battery
capacity
charge
charger
check
cylinder
device
ecology
electric
electrical
electricity
electronic
electronics
empty
energy
engine
equipment
fuel
full
icon
illustration
indicator
industry
interface
ion
isolated
lithium
load
low
metal
modern
object
power
recharge
repair
service
set
sign
solar
source
status
technology
volt
voltage