background
battery
black
bulge
camera
caution
cell
cellphone
charging
chemical
danger
dangerous
electricity
energy
equipment
expand
explode
fuel
hand
hold
industry
ion
life
line
lithium
mobile
modern
old
pack
package
phone
power
recharge
recycling
red
risk
round
safety
smart
smartphone
swelling
swollen
technology
unsafe
up
warning
white