All of our power supplies, converters and inverters and most of our other products have a two-year manufacture warranty. You will see many years of great service from all of our products however occasionally a product will fail during the warranty period. If you suspect your product is not working correctly, call us for immediate assistance and replacement. If we suspect the unit is faulty, we will issue an RGA (Return goods authorization) number to have the unit sent back to us. If your product arrived damaged, we will send a replacement immediately. Our "No Hassle" policy lets you bypass the manufacture for fastest service but does not preclude you from contacting the manufacture should you choose to deal with them direct. We will even "cross ship" to speed the process if needed.