battery
word
Definition
A battery is a device that stores electricity and provides power to things like phones, cars, and remote controls. It can also refer to the amount of power left in a device.
Usage & Nuances
Very common in everyday English. For small removable power units, both 'battery' and 'batteries' are common; in some contexts, especially British English, a single AA/AAA unit may be called a 'battery', though 'cell' can be more technical. Common phrases: 'my battery is dead', 'low battery', 'charge the battery', 'replace the battery'. In phones and laptops, people often use it to mean remaining power: 'I’m at 10% battery'.
Example Sentences
My phone battery is almost dead.
basic
The car won't start because the battery is dead.
basic
I'm at 5% battery, so call me now if it's urgent.
natural
Did you charge the camera battery last night?
natural
I always keep a spare battery in my bag when I travel.
natural
The toy needs a new battery.
basic