Excerpt: I use the gp4's in a fixed live installation and must have a solid 2 hrs in wi-fi 1080 high quality mode and this made it possible. Impressed with the results from the first show and my partner had the immediate wow reaction to the angle and wide perspective...
Pros: Durable, Easy To Use, Highly Compatible, Lightweight
Excerpt: The thickness of it makes it almost unusable for attaching the go pro to your chest with the chest harness. It comes out an extra quarter inch or so which makes it very hard to position the camera correctly on certain mounts.
Excerpt: I bought this just before my trip to Disney World as I knew that I wouldn't have a whole lot of opportunities to charge my internal battery during the day. This seemed to more than double the life of the battery.
Excerpt: Works well to keep our GoPro on line for greater amounts of time. Doing analysis of crash tests the cameras can be set and not worry about minor delays and loss of power. Fit just as if te original with little adaptation.
Excerpt: It is a useful product, but most needing extra battery life would like to also frame their shots with the LCD. Iphones are for suckers. The rest of us just need a simple port that lets us put the lcd pack on this. Seems like a major oversight.
Excerpt: Used the Bacpac on a recent trip to the drag strip just to see if it would meet my needs, it more than surpassed my expectations, Walked around all day taking pictures in the pits and videos of many of the races and still had over half of the battery life to use after a day of off and on camera use...