The battery compartment access is on the bottom of the PIM Master.
Battery Compartment - Open
The battery snaps into the compartment door assembly. Orientation of the battery is important. A diagram inside the battery door assembly and another diagram inside the PIM Master compartment show an image of the battery. Notice that the connector end of the battery is oriented away from the latch mechanism, and the battery connection openings are up, or away from the plate of the door assembly.
The image in the battery door assembly shows the orientation in which you should see the battery as you place the battery into the door assembly (see Figure: Battery and Cover Plate). Inside the PIM Master compartment is a reflected image of the battery (see Figure: Battery Orientation Diagram Inside Battery Compartment) to show how the battery connectors align with the pins inside the compartment. As you place the battery door assembly into the battery compartment, the battery connectors and the reflected image should match, as if you were seeing the connectors reflected in a mirror.
To avoid connector pin damage, you must not press the battery downward onto the connector pins within the battery compartment. You must position the battery door assembly so that the battery connections can slide lengthwise onto the connector pins as you seat the door assembly against the bottom of the PIM Master. The tab on the door fits into a slot located on the edge of the case adjacent to the connector pins.
Place the blank edge of the door assembly into the PIM Master first and ensure that the connector end of the battery is as deep into the case as possible. This is to orient the battery connector openings with the connection pins inside the pm.
Slide the door assembly lengthwise into the PIM Master case making sure that the tab on the door assembly engages with the slot in the case. Continue moving the door assembly to seat the battery connections. When the latch is aligned, close the door and twist the latch to lock the door in place. Turn the latch handle flat so that the PIM Master can sit flat when upright.