If anyone believes the stock battery isn't up to the job I can't recommend the extended battery for the D2 any more highly. After power cycling through it a few times, this thing will last for dayS without needing to be charged. For example right now im at 80% battery after moderate use and my time since unplugged is 1d1hr. If you want to not have to worry about needing a charger all the time, get this battery. /thread