A battery backup surge protector plugs into a wall outlet. A large battery is at the other end. The battery keeps devices running for a limited time even if all power in the house should fail.

the Tapo Smart Wi-Fi Wall Outlet Extender is a fine product. It expands any duplex outlet into three smart outlets and provides three more “dumb” outlets. You also get three fast-charging smart USB ...

The USB Wall Charger and Surge Protector takes one outlet and transforms it into a way to charge nine items at once.