No hesitation he be many official GoPro batteries. For me, the second battery is a real plus because GoPro HD3 is greedy. For example, if one wants to use the time for a ski day with the cold, the battery takes expensive and instead of being in harbor, hop! The second and there :) Consider also buy the magazine that goes like this, 2 batteries charge simultaneously (One in the cam, the other on the charger). With the feeder, can also be put to the load while using the GoPro outdoors.
