The battery is intended for my GoPro Hero 3. With this device, I do a lot of underwater scenes and use while the GoPro display. The demand for electricity is thus naturally higher than in "normal" operation. One respondent with the standard battery (1050mAh) quickly to the maximum capacity of the battery, you can shoot with the 1180mAh some time on. For economical work but the battery lasts for two dives. Thus, a battery change it will save you in difficult conditions such as on a boat. As a second battery you can avoid downtime of GoPro, because there is always a charged battery available.