On Sun, 16 Jan 2011, Rob Morley wrote:

On Sun, 16 Jan 2011 12:42:06 +0000
Tom Anderson wrote:

Are there any? I need some backup lights, and it'd be nice to use the
same batteries as my main light.

If you don't find something specifically designed for CR123 at a
sensible price, I'd have thought anything that uses 2 AA cells and has a
voltage regulator would do, with minor modification.

I might be capable of the requisite modification if the light had
firmware, but if it's hardware, it's very likely to be beyond me!

But very good point; for those playing along at home, CR123s are the same
diameter as AAs, a bit shorter, and twice the voltage (if they're the
rechargeable kind rather than disposables - strictly speaking, CR123A, i
think). Anything which can take two AAs can probably run on one CR123 and
some stuffing. Hmm.

The biggest challenge might be finding a rear light which runs on AA
rather than AAA.

tom

--
Gotta have skills to pay those bills.