accumulator
alkaline
backgrounds
batteries
battery
black
bolt
cclamp
charge
circle
clamp
clamping
construction
craft
electric
electrical
electricity
electronic
electronics
energy
equipment
gear
generation
green
grip
handle
hold
industry
instrument
macro
material
metal
object
positive
power
recharge
recycling
screw
silver
steel
supply
technology
tool
volt
voltage