Nature Power 60008 8-Amp/130-Watt 12-Volt Solar Power Charge Controller Provides protection to your batteries from overcharging from 12-volt solar panels Can handle up to 130-watt or 8-amp from a solar array Cut in voltage of 13-volts, cut out voltage of 14.2-volts User friendly easy to read two led display shows that your battery is fully charge or is charging Measures 4-inch by 5-inch by 1.5-inch and weighs less than one pound