I am thinking about buying a new battery for me camcorder, so that I can have 2 on my trip. However, I have a few questions: 1. Does the BP-2L24H battery (Description: http://www.amazon.com/Canon-BP-2L24H-Battery-DC310-Camcorders/dp/B000VW6HHM) work with my HV20 camera? 2. Should I go to a third-party battery supplier (ie: Sterlingtek or Impact) to buy my battery, instead of going to Canon?