Soon, I am about to embark on a journey with my newly purchased, GoPro Hero 5. But the 1 battery solution they give you is a bit skimpy. I looked on GoPro's website and they do have 20% off, but they will not ship batteries solely for customers. My daily usage will be 2 hours, minimum, so please keep this in mind. I plan on filming all that at 4k30.
The GoPro Dual Battery charger caught my eye, but the device costs $100 and only comes with 1 extra battery.
Please advise me on what you think is best, and any appropriate links.
EDIT:
The GoPro will be used to film my flights each day. Meaning I will consume all my juice, and there is no way to mount another portable battery. As well as any other charger you may find.