Originally Posted by
Mr IGH
I agree, two hours minimum is a tall order. OP will need a second battery pack and stay on top of charging. Or pay more up front for a dyno system and never worry about batteries again.
Asking for 2 hours on high with a 18650 battery pack on a Cree single emitter light isn't a "tall order". It's not even asking much out of the battery pack. I regularly get 3 hours out of the stock battery pack and can get 4 to 6 out of the larger 28650...all at tiny fraction of the price of a generator system.