For what it's worth, don't let the age fool you about that thing.
I have one of the original XLT's when they first came out probably a good 12 years ago or when it was, they hit the market and I said Gimme gimme.... the thing is performing excellent to this very day. Well it has one problem, due to years of banging around the display is starting to drop lines, but with a standard coil that came with it, it does just as good as the day I got it, and still kicks the crap out of many of the newer models out today.
My Original battery pack for the thing finally gave up the ghost about 2 months ago. That thing took a terrible abusing. I have 2 of them, and that one was lost in a closet for probably close to 5 years before being found again after a move. I charged it up and it lasted another two years before now finally not holding a charge good anymore.
When it comes time for a new pack, take it to a Batteries Plus or a specialty battery store, theres a good chance they can rebuild it (put new batteries in, reweld the tabs etc) for quite a bit less than a new one costs from whites. I did up a NiMH pack for mine and the thing runs forever between charges. It's a 3300 mAh pack, purty sweet!!
Aaron