I've been a huge fan of the portable GoPro HD Hero Cameras for capturing images from a number of different sports, events, and also Kite Aerial Photography. GoPro has been developing some interesting accessories for the HD Hero camera, including the new LCD BacPac and Battery BakPac. The LCD BacPac allows you to view what you plan on capturing in real time, and also play back the images and video you've also recorded. The Battery BacPac allows you to add an additional GoPro battery to almost double your recording time. I thought it would be interesting to actually test the life of the GoPro when adding the accessories, and document the results here.
Number of Images: 222
Battery Life: 3 Hours 41 Minutes
HD Hero with LCD BacPac
Number of Images: 95
Battery Life: 1 Hour 33 Minutes
HD Hero with Battery BacPac
Number of Images: 382
Battery Life: 5 Hours 38 Minutes
HD Hero with Battery BacPac and External Kensington Ultra Portable Battery Pack (USB)
Number of Images: 614
Battery Life: 10 Hours 14 Minutes
As you can see, you do not get double the life out of the GoPro with the Battery BacPac, but almost. The times above will almost certainly change for capturing video, or increasing the intevelometer setting. Using the LCD BacPac will significantly reduce the usable time for your GoPro, but being able to see what your shooting is necessary. My goal is to create a 10 hour time lapse sequence, ending right after sunset, and using a motion timer to track the sun across the sky. Look for that video this summer!