The Sunvault 3.89kWh, 12V 304Ah, 200A Smart Battery, part of our metal accessories collection and manufactured in Romania, is designed to meet the energy needs of small-scale residential and commercial systems. With a capacity of 3.89kWh and a nominal voltage of 12.8V, it is recommended for applications such as off-grid solar systems, caravans, boats, or as a backup power source.