The key requirements: mount your battery on a fireproof wall (concrete or masonry, not drywall), leave 30 inches of clearance on all sides, and ensure the space won't block vehicle access. Most installers can complete garage installations in 4-6 hours. . Batteries can be placed indoors or outdoors but the decision of where to install them should take into account the Manufacturers' recommendations, as to comply with safety standards and to maximise their capabilities. Installing solar batteries indoors is a preferred choice in residential settings. . Installation Video for cabinet battery and inverters, step-by-step guide teaches you how to install the MOTOMA liFePO4 solar storage battery and solar hybrid inverter. Motoma cabinet battery is typically used for residence and commerce. What is the size for 120kw solar system? A 120kw Solar power system inclued 240pcs 500w solar panels, it requires up to 650㎡.