Fangrui Product Details Input Voltage: 12v/24v/36v Nominal, Accept(8v-40v) Range; Output Voltage: Dc 13.8v 10a 138w Maximum Efficiency: Greater Or Equal To ; Ripple Wave: 50mv; Starting Delay Time: Less Than Or Equal To 2s Over-current /over-load /low-load /short-circuit /over-heat Intelligent Protection Compact Aluminium Shell With Epoxy Potting, Waterproof, Anti-dust, Anti-shock Protection And Better Heat Dissipation Widely Used To Golf Cart, Motor, Speaker, Gps, Led Car Display Screen, Air-conditioner, Electric Fan, Solar Energy, Photo-voltaic Power, Dvd, Industrial Equipment Ect. Colour: Silver Material: Metal Package Contents: 1 * Dc Automatic Buck Boost Converter Only The Above Package Content, Other Products Are Not Included. Note: Light Shooting And Different Displays May Cause The Color Of The Item In The Picture A Little Different From The Real Thing. The Measurement Allowed Error Is +/- 1-3cm.