The LC Fabrication universal mount battery box for Antigravity 12 and 16 cell lithium ion batteries is machined in house from 6061 aluminum and given a durable powdercoated finish, right here in the USA! Mounts anywhere you choose using the supplied 1/4-20 flathead screws. Assembled dimensions are approx 4.5L x 3.0W x 4.0 Tall, weighs just about 2.5LB! Batteries not included.