3d
accumulator
alkaline
background
battery
capacity
cell
charge
charging
choice
closeup
concept
conservation
eco
ecology
efficiency
electric
electrical
electricity
electronics
energy
environment
equipment
fuel
garbage
generation
green
group
illustration
industry
many
metal
object
plus
pollution
power
recharge
rechargeable
recycle
recycling
renewable
reuse
single
supply
symbol
technology
volt
voltage
waste