accumulator
alkaline
balance
bill
board
business
buy
cash
charge
check
chip
circuit
color
colorful
computer
contour
cpu
digital
electrical
electricity
energy
finance
financial
flat
fuel
full
icon
illustration
isolated
line
linear
microchip
microcircuit
outline
pay
payment
power
price
print
purchase
receipt
recharge
sale
set
sign
technology
voltage