4
9v
aa
accumulator
alkaline
battery
blank
blue
cadmium
capacity
charger
chemical
chrome
component
concept
cylinder
design
device
disposable
ecology
electric
electrical
energy
fuel
fun
funny
garbage
glossy
group
industry
lithium
metal
mobile
negative
nickel
pack
package
positive
power
recharge
rechargeable
recycle
recycling
row
security
storage
technology
trash
volt
voltage