accumulator
alkaline
background
battery
business
capacity
car
cell
cellphone
change
charge
charger
check
device
electric
electrical
electricity
empty
energy
equipment
filled
fuel
full
generation
hand
holding
icon
industry
interface
level
load
low
meter
mobile
phone
plus
power
recharge
screen
sign
smartphone
supply
symbol
technology
telephone
tired
using
voltage
weak
wireless