Where to Mount?
The power board can be mounted on either the top or bottom of the Raspi Rev B.
Mount it on the top of the Raspi board if you don't need access to C5. Mounted in this position, you can still attach a peripheral board to the GPIO connector and keep the height of the assembly to a minimum.
If you need access to C5, mount the power board on the bottom. You can also mount in a completely different location and wire into the P5 connector.
Mount it On Top...
Raspi With Wires in P5
To mount the power board to the top of the Raspi, start by soldering wires or pins into P5 for the 5V, GND, the on/off control signal, the request-off signal, and the battery comparator signal (pgood) and place a nylon standoff in the mounting hole.
Attach the board...
Power Board is in place and soldered to the Raspi
Next, thread the wires through the mating holes in the power board, solder them, and install the nylon screw through the mounting hole into the standoff.
The photo also identifies some of the other connection ports. Clockwise, from the P5 port in the upper left corner, the connection groups are: the battery level comparator control signals, the battery connector, the charger input, and the on/off momentary contact switch input.
Add the Switch and Other Wires...
Battery connected to power board and other connections
Here, wires lead to the charging connector, the wires to the on/off switch, and attached the battery to the battery connector. The "charging LED" connections just below the mounting screw are also shown. (The image is rotated 180 degrees compared to the other images.)
Finally, connect the battery level monitor control signals to GPIO pins (not shown.)
Turn it on!
Touchscreen attached to the GPIO connector.For this example, a touch screen display is connected to the GPIO connector. Pushing the on/off button booted the Raspi while running on the battery.
The power supply board fits right next to the GPIO connector.
The power board sandwiched nicely between the touchscreen and the Raspi. It still allows a peripheral to connect to the GPIO connector.