Easy to install, and expandable, the Go Power! SolarFlex Eclipse 190W Solar Kit is the largest single panel 12-volt charging kit on the market. This powerful battery charger is great for maintaining the charge in all types of batteries and is ideal for extended RVing or dry-camping. Supercharge your solar array to 98% conversion efficiency with MPPT charging. Ideal for series configurations. Bluetooth enabled remote allows you to view and change essential battery stats from your handheld device.