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Archive 2007 · Alternative CP-E4 flash battery pack

  
 
rcombier
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p.1 #1 · Alternative CP-E4 flash battery pack


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.



Nov 30, 2007 at 01:45 PM
sjms
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p.1 #2 · Alternative CP-E4 flash battery pack


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.


Dec 01, 2007 at 12:28 AM
FSJ_Guy
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p.1 #3 · Alternative CP-E4 flash battery pack


Suck it up and buy the CP-E4.

It'll be lighter and more manageable than a lantern battery anyway. And as mentioned, it converts the energy into high voltage, low amp power.

Yes, it's spendy, but how much did you pay for your flash?



Dec 01, 2007 at 01:28 PM
sjms
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p.1 #4 · Alternative CP-E4 flash battery pack


this is what i use when i need the juice
http://i.pbase.com/g3/89/44489/3/88583012.3iUzuBTq.jpg



Dec 01, 2007 at 01:42 PM
sboerup
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p.1 #5 · Alternative CP-E4 flash battery pack


sjms wrote:
this is what i use when i need the juice
http://i.pbase.com/g3/89/44489/3/88583012.3iUzuBTq.jpg


In this case, a pic is not worth a thousand words. Brand, name, cost, etc?



Oct 09, 2008 at 01:24 PM
sjms
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p.1 #6 · Alternative CP-E4 flash battery pack


i guess you can't read.
www.digitalcamerabattery.com



Oct 09, 2008 at 03:15 PM
swanny338
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p.1 #7 · Alternative CP-E4 flash battery pack


The pic is so small it is hard to read the text on the battery pack...


Oct 09, 2008 at 03:27 PM
sjms
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p.1 #8 · Alternative CP-E4 flash battery pack


sorry. i can read it on mine though.


Oct 09, 2008 at 06:08 PM
Mike V
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p.1 #9 · Alternative CP-E4 flash battery pack


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?





Oct 10, 2008 at 05:30 AM
jchin
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p.1 #10 · Alternative CP-E4 flash battery pack


buy the CP-E4 ... I have 2 CP-E3, they are lightweight and works.


Oct 28, 2008 at 04:25 AM
jcolwell
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p.1 #11 · Alternative CP-E4 flash battery pack


Agreed - get the CP-E4. I have a CP-E3 with two battery magazines, and you can keep going all day.


Oct 28, 2008 at 04:53 AM
sjms
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p.1 #12 · Alternative CP-E4 flash battery pack


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.



Oct 28, 2008 at 06:47 AM





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