3.1 Aviation plug cable. Open circuit voltage:21.6V. Short circuit current 13.44A. Maximum power current :12.22A.USB output for charging mobile phones. Can be charge 12v battery and USB electronic Simultaneously. Used for battery charging, camping, traveling, outdoor etc. The item "300W(75Wx4)Portable Solar Panel Kit+20A controller for Camping Boat Home Caravan" is in sale since Friday, October 4, 2019. This item is in the category "Home & Garden\Home Improvement\Electrical Supplies\Alternative Energy Supplies\Solar Power Supplies\Solar Panels & Kits". The seller is "caonanhua050455251" and is located in Shenzhen. This item can be shipped worldwide.