ABSTRACT
The energy storage is required to meet the spacecraft load demand not only during eclipse, but also when the demand exceeds the power generation at any time. The most widely used energy storage technology is the battery, which stores energy in an electrochemical form. There are two basic types:
Primary battery, in which the electrochemical reaction is irreversible. It cannot be reused after full discharge, so it is discarded. It finds applications in very short duration missions as the primary source of power. It has a specific energy that is an order of magnitude higher compared to the secondary battery.
