I use Energizer lithium in my SP model and it has worked great but with 14500 the fit is just to tight and causes issues. It's really not a problem because the light is plenty bright this way. I could nip a bit of the spring off to fit 14500 better but I'd rather not. It has a trit in the tail so I use it mostly as a nightstand light set on low mode.
I'm really happy with this one unlike some Nitecore PD light's of the past.
I'm really happy with this one unlike some Nitecore PD light's of the past.