ahendricks18 wrote:

Any idea on what kind of ac adapter the laptop uses?

"you can find the required power information on a label on the bottom of your ThinkPad"
http://www.thinkwiki.org/wiki/Power_Connector

IIRC the original is a fairly heavy slab. Definitely not wall-wart territory.

I had the 486 version of that Thinkpad.

The other memory that is coming back is that when I did get the thing plugged in (ten years ago now?) the old battery pack got alarmingly hot. Then it kept cooking, for the next several hours after I had unplugged it and set it outside away from the house. It was a very uneasy day, and a bit of a sleepless night.

So YMMV, but after that I have very little interest in experimenting with old, out of date battery packs. Houses cost too much. The Thinkpad will however operate just fine without the battery installed, so feel free to take the thing to your local recycler while you look for the AC power supply.

Very nice! I found a very similar model ThinkPad at my local dump a couple years ago, a 365X. Basically the same thing except no internal optical drive. Also, if yours has a TFT screen, it wouldn't be a bad little system for old games.

Here's the specs:
http://www.thinkwiki.org/wiki/Category:365XD

Thanks for the replies! I plugged it in with a hp laptop charger from my other laptop and it worked, but no display, and the indicator lights illuminate. Maybe I have to use an OEM charger, because the hp was not the same. Also I plugged it into a monitor and still it has no display but the monitor (the packard bell) works fine on other pc's.

You can find chargers for Thinkpads on amazon (both generic and oem) for almost as cheap as a live chicken. I would go back for the other Thinkpads if I were you just to use as parts.