How do I get a new Dell laptop battery under warranty?

My Dell Inspiron 1440's battery recently reached the end of its usable life. Since my laptop is covered by Dell's warranty, am I able to get a new replacement battery free of charge? How might I go about procuring this item?|||Call or contact them through their web site. They have all your warranty info. You will just need to provide them with the computers service tag number. It is on the bottom of your computer.|||You go to the manufacturer's website you look up the telephone number for Technical Support. You call that number. You describe the problem to them, and you arrange to ship it back to them for repair.