rlichter
Newly Enlightened
The new Sunwayman Sirius has a brightness differential in "low" of 10:1 between an RCR123 and a CR123, 10 lumen versus 1 lumen. I have no prior experience with the RCR123 and have never used a pair of CR123s in my 18650 lights, so I don't know if this degree of difference is normal. I don't think this is an issue with my HDS Clicky, so I know a driver circuit can be designed that is more or less consistent in brightness whether a primary lithium or the rechargeable lithium-ion is used. Presumably Sunwayman know what they're doing, so why design and release an expensive ($200) light with this problem? What are the technical reasons for this brightness differential (which only shows up on "low" and not on "medium" or "high")?