EnerSys Genesis NP18-12B - 12 Volt/17.2 Amp Hour Sealed Lead Acid Battery with Nut-Bolt Connector;

EnerSys/Yuasa - 12 Volt 17.2 AH Battery 12V 17.2 Ah sealed lead acid battery with 7/32" bolt fasteners. 7.13 x 2.99 x 6.57.