Amazon has slashed the price on the Sunsei Solar 130-watt 16.5-volt charger to only $436.34. Its an ideal back-up power source for cabins, RVs, and boats. It includes an integrated blinking indicator to display charging status, as well as a “Plug-n-Play” feature, which allows connection of multiple panels in seconds without tools or rewiring; connector wires and mounting hardware are also included.