Originally Posted by
RubeRad
Looked up the Fenix PD35, I have a no-name light similar to that, and I like it very much. I see some of the PD35s on amazon are shown with 18650's, and some with CR123A. I've never seen those before. Are two stacked CR123A equivalent to an 18650? (like apparently 3 bundled AAAs are)?
The Fenix BC30 can use either 18650 or CR123A. Makes it a good deep winter light, as rechargeable batteries are not as good at cold temperature as primaries. For anything above 0F or so I use 18650, and when the temp drops below 0 I switch to CR123A lithium.