12" Powerbook External Antenna Hack

Step 4 Cut a notch in the battery itself

If you cut a notch in the Airport Extreme flap properly, you should be able to lay the battery down on top of the cable as it snakes out. You can eyeball where you'll need to cut into the battery itself, in the flat piece of metal that sticks out. Mask the battery to prevent filings from getting in anywhere, and hit it with the Dremel using a cut-off wheel