MEMPHIS, Tenn. — FedEx will skip special charges for most packages shipped during the holiday season this year as it seeks to undercut rival UPS in a fight for a larger share of the millions of items now bought online.FedEx Corp. said Thursday that it won't charge extra for peak-season residential deliveries unless the package requires extra handling, such as for very large items.On an average day, FedEx delivers more than 12 million packages to businesses and homes, but that can jump to 25 million on peak days in December.Residential shipments represent a much smaller share of the company's revenue, but they are growing faster because of the rise of online shopping. Residential deliveries are relatively inefficient because homes are so spread out and a driver might take one package to a house instead of several to a business — that raises costs for FedEx.The shipper, based in Memphis, Tennessee, said that from Nov. 20 through Dec. 24 it will add surcharges of $3 for packages needing special handling, $25 for oversized items, and $300 for unauthorized shipments.FedEx's announcement comes two months after UPS announced new surcharges that will impact shipments in some weeks near Black Friday and Christmas.United Parcel Service Inc. said that it would add 27 cents for residential deliveries from Nov. 19 to Dec. 2 and Dec. 17-23. It will add a fee of between 81 and 97 cents to overnight, second- or third-day deliveries for residential deliveries Dec. 17-23.