Originally Posted by Wheels4
Littlebigman, thanks for that formula... i needed it. i'm right on track.
20w with 5ah battery will give me my 2hr run time with no problems. heck, i might even add another 10w light just because i can. then i can switch between them like you suggested.
thanks again.
Unless you have a commute well over an hour replace I would suggest that you make that second bulb a 35W Solux. I like my Solux bulb, very nice white light.