Originally Posted by
mtalinm
very true...I have both. but I switched to a SuperFlash in back because the combination of the headlight and taillight drained the battery after about 30-40 minutes, not enough for my 1-hour commute. but if it's enough juice for you, it's a great way to go!
There's definitely something wrong with your battery. I got 3 hours on just the headlight, on high, about 2.5 with the taillight. I now run with a Tenergy 8 cell pack, and I run both for 45 minutes in the morning, tail only on the way back, for a week before charging.