Shop Gopro Battery BacPac. The Battery BacPac is a removable battery pack that seamlessly attaches to the back of your GoPro to increase battery life. Now featuring 15% more battery capacity than the previous model, it’s perfect for all-day adventures, marathon surf sessions or any application where you need extended battery life. It’s also ideal for activities where charging or swapping in a fresh battery is difficult, like scuba diving and overnight backpacking. You can charge it with any standard USB charger, the GoPro Auto or Wall Charger (sold separately), or a computer.