I have a Fujitsu Amilo and the battery has been fine - holding about 90mins charge, which for fujitsu is fine I think!
It has suddenly stopped charging - not gradually lasting less time, just not charging at all when I plug in. I have tried a different power pack and it makes no difference. Any ideas?
It has an array of cells in it. One of them probably died. If your battery previously worked for 90 minutes it may be worth getting it seen to. If the casing is easy to crack it shouldn't cost too much.