I picked up an extra Magicshine light head to augment my existing one. This doubles the amount of light that I will be putting out to around 1,800 lumens. I haven't tried it at night yet, but I can't wait!'''
Theoretically, this should reduce the battery life to about half, but since I'm only using them for about 1.5 hours a day and most of that time in blink mode, I don't think it should be a problem. I'm also planning on adding a DC-DC converter from my 48V main pack down to the 9V range that these lights need.
More later,
Ambrose