If it takes the same charger, it's an AC-4U. I still see a number of those listed on eBay. Nokia no longer makes the batteries as far as I know, but a lot of Chinesium devices used BL-5 batteries, so you should be able to find one of those as well.
I know I have the charger somewhere, but the battery is probably toast. I'll look for some chinesium batteries to see if this thing is still functional. It might be worth playing with if there's still some life left in it.
I did notice the repositories for mine are still up, and I was able to install new software. All the certificates are out of date and the web browser is really old, so the Internet at large really doesn't work well...
(post is archived)