This is the smallest battery in the Antigravity Baterries line up. At a miniscule 4.25″ Length x 1.25″ Depth and 3.75″ hieght (to the top of the terminals) this battery offers extreme power in the most compact size in Lithium Motorsport batteries. This battery is best used for applications where extreme weight loss and ultra compact size are desired. This battery is often chosen for Performance applications where compact size and low weight are desired. Can start inline 4-Cylinder motors up to 600cc for race use, or up to 250cc for everyday street use in scooters Also a favorite of custom builders who want the smallest battery to tuck out of the way.