A battery system stores the energy generated by the solar generators. At Berlin Space Technologies GmbH we are building our own.
The BAT-110 is a Li-Fe (Lithium Ferrite) battery. This battery chemistry offers very good cycle life, often 10x better than traditional Lithium-Ion used in many space mission. Our battery technology runs at 23.1V but it can easily be adapted to other voltages depending on your need.