My observation is HID flickers when the battery is not present (in my case one of the battery terminal was unplugged)..
I have proper HID blaster and it has got only one beam that is high beam (hid beam was a retro fit) along with low beam normal bulb..
I have a question: Which battery is suitable to be used with HID. I am having poor performance of dry battery with my HIDs. I have even changed the rectifier but the result is not very good.