If your not goin crazy on the radio or lights 1 (good) battery should serve you well, I have 4500 winch, radio, back-up lights, led interior lights, hid headlights, 2-4''hid driving lights and my oddesey 925 serves me just fine. i have run all night with radio and all lights on and stopped for cooler checks radio on teryx not running for hr or so and she always fires right over every time. The stock battery is a pos and will let you down without any notice.
09 monster, msd & muzzy std, dalton clutch kit and od plate (not installed yet), viper 4500 with synthetic rope, homemade alum. roof, homemade uhmw skids, homemade catch can, uni slip-on filter with billet adapter, 26.5 pitbull rockers on stock sport rims, hid's from sxs customs, oddyssey 925 with sandjunkies mount, motels full windshield, induced fab doors, 62 mph top speed on speedo