How do you remove the battery on a sportster XL 1200 2008?

READ THE MANUAL BEFORE DOING ANYTHING!! My husband just tried to replace my battery on my 2005 1200C. The negative terminal post completely melted off onto my garage floor and the wrench got so hot it burned his palm....After this, he read my manual which said to connect the positive terminal first. He connected the negative terminal first..who would have thought it would make that much of a difference... Good luck!