Is there a socket for storing electricity?

As far as I know, there are two kinds of UPS sockets on the market, 200W and 500W. A socket has four jacks, two of which have uninterrupted power supply, and the standby time of the computer ranges from 25 minutes to 60 minutes. This factory is called Shenzhen Yushenhong Electric Appliance, and its product brand is WINNAL, which specializes in developing and producing energy-saving sockets. It can be found on Baidu and Ali, so our company bought two UPS sockets.