Cat. No. 98450
This is the later style battery charger that allows one to discharge a battery fully before charging. This really helps keep the life of the older Nicad batteries. This also will charge the newer NiMH celled batteries.
Note - the battery chargers have been difficult to get new from the factory. I've been testing a new type of charger made by Wiese Fototechnik with lithium cells and may have those available so check back.