Do you have the receipt? Did you choose email receipt when purchased at Depot? If so, your best bet is to try a store return. If you contact Ridgid, they will want YOU to pay to ship the cords to them for inspection, which would likely get denied replacement.
From their website....
"It is our experience that a product that fails prematurely due to a manufacturing defect in materials or workmanship, will generally do so very early in the products life cycle, often the first or second time the product is used. When returned for inspection, these products are generally found to still be in like new condition and show very little signs of use. It is uncommon for a product that was manufactured with a defect, to survive under normal use for any extended period of time. Products that are returned for warranty inspection after months or years of continuous reliable service are rarely found to be defective. The most common demand for service is the result of normal wear and tear issues, which are not considered to be a defect in materials or workmanship.