A SunSparks kits includes everything you need to charge your 12V batteries with up to 450 watts of solar power! Perfect for RVs, cabins and other off-grid battery charging needs. The SunSparks Solar Charging System by Zebra Energy ensures that your batteries will stay topped up and your equipment will be operational. Includes a 150w solar panel, 12V 30A PWM charge controller, 4 x Z-brackets for mounting the solar panel and a 50 foot 10 AWG extension cable with MC-4 connectors to connect the solar panel to the charge controller. Expandable up to 450w. Simply purchase up to two SunSparks 150w Solar Panel Expansion Kits for all the necessary hardware.