Powersonic PS-12550 12V 55AH Pride Maxima SLA Battery Original Power Sonic PS-12550 12V 55AH SLA Battery. Dimensions: (L) 9.04 x (W) 5.45 x (H) 8.98. Weight: 36.00 lbs. SLA/AGM maintenance free, spill proof battery Rechargeable battery that can be mounted in any position, resists shocks and vibration 1 Year Warranty