battery-powered device
electrical device that supports (or requires) operation on battery power
battery-powered tool
power tool that gets its energy from a battery
battery electric vehicle
vehicle using only rechargeable electric batteries as energy source
uninterruptible power supply
electrical device that uses batteries to prevent a power flow interruption
remote control
physical device used to control another device remotely (often wirelessly)
Oxford Electric Bell
experimental electric bell that was set up in 1840
cordless telephone
portable telephone that connects to a landline
solar lamp
lighting installation containing a solar panel and battery that automatically charges in daytime and illuminates at night
mobile device
small, hand-held computing device