On Tue, 06 Jul 2010 08:12:48 -0700, SMS wrote:

On 06/07/10 7:37 AM, Mike S. wrote:

snip

My interest in this type of product is for electronic flash. For instance,
the external flash for my Olympus uses two AA cells. It also takes CR-V3
primary packs, which deliver much better performance. Unfortunately the
RCR-V3 (which is basically two 14500's in parallel with special circuit to
make it look like two AA's in series) are disappointing. Not only do
reviewers say they last no longer than NiMH, but they can't deliver the
current necessary to charge a flash and end up dying after the first shot.

I was hopnig the product described here might be better, but it seems they
are not what they were described as being.

Unfortunately there's no such animal as li-ion or li-po R6 battery, and
unlikely to be one.

To me it's annoying to have to use AA batteries for the flash, and BP511
Li-Ion packs for the camera. I could use AA batteries in the grip, but
AA NiMH performance is much worse than BP511 performance, and in reality
the NiMH batteries are no cheaper because BP511 packs are so widely
available at such low prics. I wish Canon had made their later flashes
able to use a BP511 or four AA cells. If it can work with four Lithium
non-rechargeables at 4 x 1.7V = 6.8V then it could certainly have been
made to work at the 7.4V of a BP511.

I don't know what they did to the the RCR-V3 to limit the current to the
point that it can't deliver enough current to charge the flash since
there's no inherent reason that a 14500 could not deliver enough
current. I use eneloops in my flash, but it's rather annoying to have to
carry two different chargers. OTOH I would have an AA charger along for
other devices anyway on most trips.

Now that we've gotten all of pretend-photographer troll SMS's vibrator
power-source information out of the way ...

Has anyone used these particular batteries in their cameras and do they
live up to their claims?