First thing, the battery life could be better. It's advertised as having a 20 minute life expectancy. It's either always 17 minutes or 18 minutes, after charging fully. For the price, it could be better. I would be happily satisfied with 25 - 30 minute flight times instead of 17 minute flight times. Even at 17 minutes the Karma returns to home at around 4 minutes. I could deduct those 4 minutes off of the 17 minutes and review a whole new flight life for the battery. It's a nice looking battery, a big battery. Looks like it could be better. I only have two batteries total for the Karma, but it isn't enough. One battery to program the proper settings and a little flight time, then the second battery to finish the job. I'll probably buy a couple more batteries, especially for wedding season for next year. I would ask GoPro to lower the price on the batteries or make better batteries.