scott...don't know much bout bicycle lights...but I will tell you this...Tony and I had bought the 3.5 million candlepower light made by cyclops...hal bulb already in it, the whole nine...they're just equiped with a cig lighter adapter for your truck...so we cut the adapter off, and crimped on the connectors needed to be placed on our 12v 8 amp battery that we bought at battery warehouse...we place the battery in a fanny pack, and the light is super light with a bungee cord to the light...this set up works all night, usually from 9-5am from what we've hunted, never dims, and the 3.5 million candles never seem to bother the critters...everything cost about 60-70 dollars...I wouldn't buy one of those lightforce lights or any high dollar lights over my home made one at this point....if you want to give it a try I can get you links to all the parts you need...or anyone else thats interested...