accumulator
alkaline
atomic
battery
capacity
cell
charge
charged
eco
ecology
effect
efficiency
electric
electrical
electricity
electronics
endurance
energy
engine
environment
equipment
force
fuel
full
icon
industry
isolated
minus
nuclear
output
performance
plus
pole
power
productivity
radiation
radioactive
radioactivity
recharge
rechargeable
stamina
supply
symbol
technology
toxic
volt
voltage
waste
yellow