2x 16340 host for 2w?

[Eravierre]

I've never build a pointer from scratch, I'm looking for a host meant for two 16340's, with focusable lens. I suppose it would also have to have decent heat sinking. I don't really care about much else.

 

[RedCowboy]

Just use 2 x 18350 cells, they are longer lasting and can provide more current for no appreciable increase in length.

The 1st two numbers are the diameter, the last 3 are the length however there is a decimal point before the 5th digit.

16340 is 16-340 as in 16mm wide and 34.0mm long.
18350 is 18-350 as in 18mm wide and 35.0mm long.

You could get a 501B host from Lifetime17 - HERE