Now relisted with cheaper shipping  by Fedex Smartpost.

External battery charger kit for older  IBM manufactured Thinkpads. NOT compatible with "X" or "T" series.

Included:
Original box
Instruction manual, copyright is 1997. Country of manufacture is Japan.
Charger control unit.
Five battery adapters. Three types show in the photo. Examine the photo to get the P/N and FRUs.
Instruction

This requires a power adapter to operate, the older 19V type, which is not included.

I am unable to test this because I don't have a vintage Thinkpad. There is no reason to suspect that it won't work, but I simply don't know. Hence, sold as parts. Please, no returns on this.