accumulator
alkaline
battery
battery charge indicator
capacity
cell
charge
charger
charging
collection
color
complete
electric
electrical
electricity
electronic gadget
empty
energy
equipment
fuel
full
gauge
green
half
high
icon
illustration
indicator
isolated
level
lightning
load
loading
low
mobile phone
percent
percentage
plug
power
progress
recharge
rechargeable
red
set
sign
status
symbol
technology
vector
voltage