From what Roy reported about a coworkers 404
you should remove the battery ASAP, and be careful as it could burst. This battery
should work. If the battery is too big, you could still use it just for recovering the files.
From what I've read the 1.8" drives don't really have a standard pin-out and they vary by brand, and I'm not to sure about the enclosure from Amazon as it lists incompatible brands. (Toshiba is, as far as I know the only other brand that uses the same pin-out as Hitachi, not Seagate or Samsung) If you do want to get a enclosure, this one
should work. (I actually have the same enclosure, but the one I bought was for IDE and not ZIF.)