I was just wondering if 4 of these batteries will be good for a car audio system. 2,000 watts RMS? This is the only best battery that I can fine in my own town. I can't get XS Power or anything like that. They do sell Kinetik at this one place but they are marked up 50% higher then SonicElectronix & I don't want to mail order any car batteries. There Shuriken batteries at another store too. there marked up high like the Kinetik. I like to buy them in store, If anything gose wrong with them. I can just drive to the store & return it. These Nautilus AGM Deep Cycle batteries are in stock ready to buy. Motomaster Nautilus AGM Deep Cycle 12 volt Battery C$259.99 Brand Name - Nautilus Cranking Amps - 1110 Application - AGM Dimensions - 13 x 6-5/8 x 9-7/16-in Amp Hours - 100 Group Size - 31 Free Warranty Replacement Period - 18 Total Warranty Period - 48 Voltage - 12 Weight - 71 lbs Reserve Capacity - 200