H7/H18 LED Headlight 9 to 40 Volts No Polarity. Operates either positive ground or negative ground. Up to 4000 Lumens per headlight bulb. Each headlight bulb uses 13 Watts. Maximum voltage 45 volts. The led headlights can operate from 9 to 40 volts no polarity. Up to 30,000 hours life. Available in White 6000K. Uses about 1.25A at 12 volts. 2 year warranty. Comparable to a 45 to 55 Watt halogen bulb. This bulb may require led load equalizers.