A battery backup, also known as a UPS (Uninterruptible Power Supply), is a device that provides emergency power to a computer system in the event of a power outage. A battery backup typically includes a battery, a power converter, and a power cable.

The battery in a battery backup stores electrical energy that can be used to power a computer system in the event of a power outage. The power converter in a battery backup converts the electrical energy from the battery into power that can be used by a computer system. The power cable in a battery backup connects …