adaptor
application
bank
battery
cable
capacity
cell
cellphone
charge
charger
charging
compatible
connect
connection
device
discharge
display
electric
electricity
empty
energy
equipment
fuel
gadget
generation
internet
line
lithium
mobile
network
online
outlet
phone
plug
power
recharge
reinforcement
reserve
service
smart
smart phone
smartphone
supply
tablet
technology
telephone
transformer
universal
usb
web