I have the same scooter as Bedogged, except mine is not the HD version. Mine goes fine all day in the parks without the power bar moving off of green. It could probably go two days like Bedogged said, but I just charge it nightly and haven't had a problem except for one time when I had a bad cell, after having the battery for 3 years. They just don't make them like they used to! LOL!
Just as an FYI, our batteries from what I have been told is only supposed to have a 1 year life on them, but with diligent care, you can get more than that.