DC Converter,GEREE DC Buck Module 12V to 5V 3A USB Output Step Down Voltage Regulator Charge for Samsung Galaxy iPad iPhone 4S 5 6/6 Plus etc. Geree DC Converter warranty--30-Day Money Back Guarantee -- 12 Month Replacement Warranty -- Lifetime Support Guarantee Input voltage: DC8-20V, (12V changes to 5V); Output parameter: DC5V3A, 15W, Work temperature : -25+60 . Super-thin, small size, high efficiency, easy installation and use. Epoxy potting, seismic, water, moisture, dust, long term stable and reliable quality. Over voltage, over current, over temperature, short circuit, it can be auto protection, and can work in normal condition when restored.