Lithium batteries are environmentally friendly and far superior to lead acid batteries. Turnlife has tested and compared our 48V, 120Ah (4 pieces 48V 30Ah) lithium batteries to the original eight lead acid batteries in the golf cart. The lithium batteries increase the speed of the golf cart by 20 to 30%, with over 30 to 45% longer distances. Battery is supplied with the appropriate charger and wiring. A software program is available to analyze charge cycles and current draw to maximize battery cycle life.