Loading... Please wait...SunSaver Duo is rated at 12 volts and 25 amps and is great for RV's, boats and cabins. This device will charge two separate and isolated batteries at the same time, such as a house and car battery, as selected by the user. The SunSaver Duo utilizes Morningstar's legendary technology with a high record of reliability and improved battery charging capability. This controller includes a backlit remote meter which may be mounted on a wall which displays digital and graphical status information about the power system. The SunSaver Duo is epoxy encapsulated for environmental protection and is user adjustable using DIP switches or using a personal computer. 5 year warranty.