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Customers most agreed on the following attributes:
from Danbury, CT on 8/29/2008
the tabs which hold the AA batteries are VERY fragile and break off easily. You need to push the batteries from behind to get them out without damage. The battery frame is replaceable, however, so you can survive if too many break off.
from NY on 8/16/2008
Because I use a few different Flash Diffusers, on a 580EX II, they tend to drain the batteries pretty quickly. The CP-E4 Battery pack, fixes that problem. The increased recycle time is also a nice feature. I use rechargable AA Batteries in it, and there replacement cost is better, than with some other packs. It does the job for me and so far I am happy with it. One thing to note, is the instruction manual mentions "Electrostatic Interference" if the pack is too close to the camera. I made a scan of it, and will include it here. I have not encountered any problems with it, following the instructions.
Images shared by: Photo FrenzyFrom the CP-E4 Instructions
Tags: From the CP-E4 Instructio
from Fresno, CA on 6/12/2008
This is a great product, just a bit too bulky. The cord can be a little bit longer, maybe if you can change the cord for a couple of different sizes. Other than that, its great for weddings, sports events, or whenever you need some speedy flash.
from SC on 6/12/2008
Very nice addition for pro and semi-pro. Ridiculous cost. [$]
[1 of 1 customers found this review helpful]
from Puerto Rico on 6/12/2008
Save money on battery using it.
Battery last longer,is water resistent,looks profesional and it is.
Flash charge Faster and my pictures looks all perfect.
No more miss picture due to lost charge or Waiting for charge.
from Northeast FL on 4/2/2008
excellent product!
from Victorville, Ca on 2/24/2008
this was the recommended one, but i found out the previous model (CP-E), which i already had and it worked just as well. If you use fresh batteries, the recharge time is very quick. That was my fault for not checking before buying, so much for wanting to upgrade
from Poconos, PA on 2/22/2008
CP-E4 Power Pack conveniently mounts to my bracket. Provides consistently reliable, fast power to my Canon 580EX II Speedlite Flash. Powered hundreds of
worry free flashes & got me through several hours of our family wedding, with great results.
[0 of 1 customers found this review helpful]
from Troms?, Norway on 1/25/2008
A battery pack is necesary in some situation. though not so much anymore with the 580EX as with my old 540EZ. The CP-E4 is very compact and light. the only problem with it is that it only takes AA batteries, Canon has no pack to put into it. If one of the AAs goes bad, and they do, then the hole pack is bad.
Images shared by: snikksnakktullprat
Tags: Made with Product, Used two 580EX radio-trig
Tags: Made with Product
from Gold Coast CA on 1/21/2008
Battery pack shortens flash recycle time, and lenghtens period between battery change out
from Chicago, IL. on 1/21/2008
When you need addition power source for your Canon Flash, this would be it.
It's a bit expensive, about half the price of the latest flash itself.
I used this on my wedding photography and it haven't failed me yet. I also got 3 580EX II flashes for back-up but having the CP-E4 connected just makes the recycling time and the consistent power an added bonus for not having to worry about your flash.
[0 of 1 customers found this review helpful]
from PA on 1/21/2008
This product was sent back, that is how unpleased I was. It was bulky and did not work with my camera bracket. To expensive for what you get. I instead went with re-chargable batteries to have on hand.
from Maryland on 10/11/2007
This unit recycles my 580EX II in less than .75 secs on full power with the new hybrid rechargeable AAs! Super Fast, Compact and Unbeatable!!
from Decatur, Ga. on 9/26/2007
This a great product
from Ft Walton Beach, Florida on 9/26/2007
Its light and compact, extends the normal camera flash range, its easy to use and well worth the dollar
[1 of 1 customers found this review helpful]
from Richmond, VA on 7/10/2007
I use 2 Canon 580ex flashes at weddings and was using Energizer Lithium batteries which are listed as ok in the Canon manual. I had tons of problems with the flashes getting very hot, over heating and shutting down using the Lithium batteries.
I finally decided to get the battery pack and use Energizer Rechargeable 2500mAH batteries. Wow, what an improvement. I can use the main flash for a full 10 hour wedding/reception without changing batteries or any problems at all. I also purchased the battery cartridge for easy swapping of the batteries but haven't needed it so far.
The combination of the battery pack and rechargeable batteries has elimated the worry of wondering when the flash is going to die, which was usually at a critical moment. The flash recharges quickly, remains cool and keeps on firing when I need it.