Swintronix makes a battery eliminator that plugs into a the battery box of the GoPro and a USB port with a 6ft or 10ft. It allows you to record as long as you have a power source and data space. I saw it online and was curious if anyone has any experience with it. It sounds like a great idea, since the battery life on a GoPro seems short, especially if you are using the wireless remote functions/smartphone app.