Morningstar’s SunSaver Duo is a reliable, highly effective charge controller. The controller is simultaneously powered by two isolated batteries. This product is user adjustable via a DIP switch or connection to a personal computer. Solar charge current is shared between the two batteries. When one battery is fully charged, all of the charge current flows to the other. Easily access information on the charge controller’s status via the backlit remote meter. The meter may be mounted in or on a wall and displays digital and pictorial status information about the solar system in a clear helpful format. This advanced system may be used for RV’s, caravans, boats, and cottages.