Cable Station with interior Battery

It's a big square box, that has 12 or more sockets. It's an idea for a company who has a mess with their cables and so on, where they have a view over the cables, so it's more controlable. But right beneath the sockets, there is this battery that recharges when power is going through the sockets. When one of the sockets is used, it uses power, but some of the power goes to the battery which charges up and when the battery has charged up, the station will now use the battery instead of the power from the power station. This will save money. Just a little crazy idea I have, you may be critical.

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