FirePower Featherweight Lithium Battery HJTZ7S-FP-IL Lithium Ion Polymer technology Extremely lightweight 1.3lbs, 50% to 70% lighter than standard batteries Built-in LED test gauge Increased cranking amps over lead acid batteries Dimensions 4 7/16" x 2 3/4" x 3 3/8". C.C.A. 150. Post Position + Right