The SRB1021 is a battery module. Renewable energy is not a constant source. We have to store the energy. For powerful storages reacting in real time, Li-Ion-systems are the right choice. ads-tec made the point on savety: three safety-circles, permanent scanning for all relevant signs und a design which passes the loose screw test are some of the safety features. The design accentuates the high end front dominated by the ads-tec safety-plugs “plus” and “minus”. The safety-plugs show how to mount the system and explain the product by itself.