Anybody ever thought of wiring up a 18,000 mAH 6V flashlight battery like this one:
to a flash? I mean, 4 x 1.4V AA batteries is about 6V, right?. I'm just avoiding dropping the $140 on a CP-E3 flash battery pack with a $5.00 battery and a bit of rigging.
actually the output on the cp-e4 is about 300vdc and plugs into the HV input on the 580ex II. its not just a battery holder. there is a bit of electronics inside too.
Mike V wrote:
You really want the high voltage so that you get faster recycle times.
I don't really see the point of these third party battery packs, which are just a bunch of cells in a case.
Sure you get more flashes, but with no extra speed ,what is the point?
actually my DCB pack isn't just an extra bunch of batteries. it is the speed if you need it.
it puts out 310v so it is an HVPP and will out perform and out last the CP-E4 by a wide margin. 2s recycle on a full power pop. under normal use the green charge light hardly ever goes out depending on conditions.
in addition it has a second output that can either power a second flash or the camera as necessary
it is not limited to any specific brand or product (different cable needed with some). so its a product that changes with your gear. so far my one pack has gone through a Nikon SB25 SB-28 SB-800 SB-900 Canon 580 580EX 580EX II and a minolta 5600HS
it would take approx 3-4 sets of cells in the CP to do the job one charge does
i think you don't see the point because to don't look or understand.
