Differences in the Fenix Tk11 PCBs?

[kosPap]

well here is a pic from a light-reviews review of the Tk11
http://www.light-reviews.com/fenix_tk11/04.jpg

review: http://www.light-reviews.com/fenix_tk11/

and here is the pic from a greek forum friend (a Tk11 Q5 Premium)

has this been observed before?

 

[daf3m]

I may add that my TK11 R2 (smooth reflector) is like this :

χαιρετισματα πατριωτη ;-)

 

[Zatoichi]

I'm not certain, but it looks like yours may have reverse polarity protection, and the other doesn't.

 

[PapaGary]

Fenix TK11 specs show that the TK11 R5 has "Anti-reverse protection". Specs for Q5 and R2 say nothing about it. I'd say Zatoichi nailed it.

 

[kosPap]

hmm and how does this affect flat-top batt usage? (AW 2600)

which of the two designs will allow it?

 

[Zatoichi]

hmm and how does this affect flat-top batt usage? (AW 2600)

which of the two designs will allow it?

The way it works, those 2 extra bits prevent the flat (-) end of the cell touching the (+) contact. I imagine cells with a flat positive end would have a problem with that, unless you used a little magnet or a blob of solder? I've actually heard of the protective bits dropping off, so maybe you could prise them off. The design without those extra 2 bits shouldn't have a problem with flat ended cells.

It's not really my area at all, but if you understand how it works I'm sure you can find a way around it.