51. Ensure the power cable is disconnected from the charger.2. Select the correct adapter module(s) for the battery(s) youwant to charge in one or both of the bays.3. Position the battery plug access hole and the hole below itover the two adapter guides on the battery charger base (seeFigure 4). Rest the adapter on the charger base, aligned withthe two adapter guide holes.4. Slide the adapter toward the front of the battery chargeruntil the adapter lock snaps into the slot at the rear of themodule bay.Figure 4. Installing a module, top viewBattery Charger BaseBattery Adapter ModuleAdapter Module LockAdapter GuideAdapter GuideBattery Plug AccessCharger(Front)Charger(Rear)