This particular charge controller has nothing wrong with it. It was purchased / shipped / delivered, but then the previous owner realized it was too small for their system, so they returned it to upgrade to a bigger controller. Enjoy a 30% Savings Shack discount with free shipping included!
NOTE: There are no warranties included with any Savings Shack items, including this one. All prices and sales are final. No returns will be accepted for this item. Please refer to our terms page for any questions or concerns.