Stinger SPV20 300 AMP 12V Power Series Dry Cell Battery with Protective Steel Case for Systems up to 600W 12V Power Series Dry Cell Battery Sealed absorbed glass mat (AGM) design Can be used as a replacement for your vehicles standard battery Can also be used as an additional battery to power your high-performance sound system Leak-Proof, non-hazardous design / 100% Sealed and maintenance free Maximum peak discharge of 1800 amps 5 second cranking output of 680 amps Nominal capacity of 17 Ah Internal resistance: 0.007 ohms This item is not for sale in Catalina Island