English · Science & Technology
battery
/ˈbæt.ər.i/
[/ˈbæt.ər.i/]
stored power source
Beginnernoun
Definition
A device that stores energy and provides electric power to a machine or device.
Example
My phone's battery ran out halfway through the journey, so I could not call for help.
My phone's battery ran out halfway through the journey, so I could not call for help.
Etymology
From French 'batterie' (a beating, a set of guns); the electrical sense was coined by Benjamin Franklin.
How & Where It’s Used
Used in phones, cars, and renewable-energy storage; also a legal term for assault.