Mighty Max Battery Viper VP-600 600 Watt Audio Battery to Power Car Stereo System Brand Product Reinforcement For Amplifiers or As Your Starting Battery Where Weight Is A Concern Viper VP-600 12V 18Ah 600 Watt AGM Car Audio Battery Sealed Non-Spillable Design Can Be Mounted In Any Position Without The Worry of Leaks and Spills Withstand Higher Temperature and Vibrations Than The Leading Brand Name Batteries. AGM Technology For Better Power Efficiency, Longer Life and Maximum Sound Performance!