accumulator
acumulator
ampere
appliance
batery
battery
blackout
capacity
cellphone
charge
charger
defect
device
discharge
efficiency
efficient
electric
electrical
electricity
electronics
empty
energy
error
fuel
gadget
generator
icon
indicator
laptop
leakage
level
low
malfunction
minimum
notebook
performance
phone
power
powerbank
recharge
rechargeable
recycling
saving
smart
smartphone
supply
tablet
voltage
waste