a device that produces electricity to provide power for radios, cars, etc.
This alarm clock takes two medium-sized batteries.
I think the battery isdead/flat (= has lost its power).
My smartphone's battery is running low, so I need to find a charger to recharge it.
The electric car industry is rapidly advancing, with many vehicles now offering longer battery life and faster charging capabilities.
During the power outage, we relied on a backup battery to keep our essential appliances running, ensuring we had lights and a working refrigerator.
