Battery
From OCE Space Simulation
The Battery is a part of both the Habitat and Ayse power bus. The battery's function is to provide power when the reactor is not on or working. The battery is very similar to the Fuel Cell with the exception being that it does not fuel, but rather has stored energy and can be recharged when other power sources are available. On the Engineering software there are three batteries, each with 10000 amp-hours of energy stored in them.