battery pack

Definitions

A portable unit consisting of one or more connected cells used to provide power to electronic devices.

A rechargeable power source designed to be attached to or inserted into a device to extend its operating time.

Examples

I always carry a portable battery pack in my bag to ensure my phone stays charged throughout the day.

The electric vehicle's battery pack was replaced to improve its overall driving range.

Synonyms

power bank portable charger external battery power cell energy storage unit

Antonyms

power outlet wall socket direct current source mains electricity grid power