Lost my H01 and looking for a replacement.
I don't think replacing an 18650 light with a 14500 would be the same performance.
You must be confused or something.... according to everywhere I've looked the H01 takes 2xCR123 or 1x18650.H01 isnt 18650
That makes more sense. I am not familiar with Nicron lights, the only AA headlamp I'm familiar with is a Fenix HL50, and I've heard Zebra makes a really good 1AA headlamp too at a higher cost. Personally I had a 1AA headlamp early on that was useful but disappointing in performance it is a Rayovac 1AA Luxeon at about 30 lumens with runtime off 1AA of about 90 mins to 150 mins on alkaline or 2500 nimh battery. I currently have 2 headlamps that are 18650 based and like them both even though they are bulkier and heavier they have the output/runtime that I need. A 1AA headlamp can't maintain the output I need for a full work day regardless of battery in it.Yes sorry I meant H15