3FM4.5 6 Volt 4.5 AmpH SLA Replacement Battery with F1 Terminal (2 Pack) GENUINE SigmasTek Battery - The Best Choice for High Quality Replacement Sealed Lead Acid Battery 6 Volt 4.5 Amp Batteries Replacement for: UB645, PS-640, YT-645, RB640, NB6, ELB06042 Item Model Number: SP6-4.5 1 Year Warranty