First of all:
The Amazon reviews have prompted me to buy, but I bought a set consisting of 3xAkku + Charger for 32.97 at eBay. I think that is a very fair price.
I compared the times of the original battery of GoPro with those of replicas and am of the opinion that no differences are noted. The Patona batteries are charged very quickly and also provide continuous power.
What, me most pleased, however, that the Patona batteries as opposed to the originals have a much lower self-discharge. If kept outside of the camera, the batteries last for days and weeks at full capacity. Even loaded in the camera is as good as to notice any self-discharge.
The originals that looks different.
In skiing at low temperatures the batteries have super hit.
My Conclusion:
Soon I will definitely order even a second of this set's and it may use any GoPro owner only to the heart. I'm really very happy.
Each of the more common 3 + filming with a Hero3 / knows that the battery life is not exactly the charm.