On the left is a YTX-12 case, used in a lot of the Japanese cruiser-style bikes. AGM, 290-300cca, about 8 lbs. 6"L x 3 1/2"W x 5"H. The other is @antigravitybatteries OEM replacement. Lithium, 480cca, 3/4" narrower case, 1/4 the weight. Antigravity even got it here a day earlier than expected. For @el_estebandolero Part-timer Steve's chopper. #antigravitybatteries #perusingtheircatalog #fitsbehindthetrans #perfect!