Wall-Mounted Lithium Battery Energy Storage Systems Wall-mounted lithium batteries are an innovative solution for energy storage, designed to be compact and efficient. Ideal for residential and small commercial applications, these batteries can be easily mounted on walls, saving valuable floor space while providing robust energy storage. The Wall Mounted Home Battery is a smart residential energy storage device that enables homeowners to store power generated by an on-site solar system or the grid for use as an emergency home battery backup. While the Wall Mounted Battery is attractive as an emergency power device, it was designed from the beginning as a way for homeowners with on-site solar systems to extend the power generated during the day into the night.