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580EX II with Quantum Battery +1

Harry Joseph , Jul 03, 2010; 11:36 a.m.

I recently purchased a Quantum MB2 cord that allows the Quantum Battery +1 to power the Canon 580EX II. According to the instructions, you have to place the module that is part of this cord inside the battery compartment of the flash. The cord that attaches to the module is very thick so that the door to the battery compartment on the 580EX II cannot close. Everything works pretty smoothly except that the door to the battery chamber stays wide open.
Quantum provides a strip of Velcro that is supposed to tape down the battery door, but I don't see how that can happen without obstructing access to important buttons and the LCD screen on the flash. Quantum also recommeds removing the battery compartment door, but this is easier said than done and might void the warranty . Does anybody have any experience with this configuration and can provide some recomendations. The way I seet it I'm better off with the dedicated battery pack.


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Alan Chan , Jul 03, 2010; 11:43 a.m.

Some cut a hole on the battery cover (rather typical for Quantum designs). I wonder what the Quantum offers that the CP-E4 not.

Peter J , Jul 03, 2010; 01:07 p.m.

It was a simple Google of 580EX II with Quantum Battery +1 and clicking on Images. Hope this helps a bit:

Jeff Spirer , Jul 03, 2010; 01:24 p.m.

It was a simple Google of 580EX II with Quantum Battery +1 and clicking on Images.

That's not the 580EXII in the image.

Some cut a hole on the battery cover

That pretty much does away with one of the key features of the 580EXII, which is weather sealing.

I wonder what the Quantum offers that the CP-E4 not.

The Quantum can be used on a wide variety of flashes with just a cable change. It can be easily recharged. On the other hand, if it runs out, it runs out, whereas the CP-E4 allows a battery change with AAs.

The question I have always had about this setup is why Quantum won't produce a cable that plugs into the flash directly. The connector is there, and they do this for other flashes. Seems like a corner-cutting thing by Quantum.

Peter J , Jul 03, 2010; 02:54 p.m.

That's not the 580EXII in the image.

Thanks Jeff. Shame on me and shame on the poster, MT Stringer, in that link for identifying the flash as a 580EX II.

Scott Ferris , Jul 03, 2010; 05:27 p.m.


MT goes on to say it is a 540EZ.

Peter J , Jul 03, 2010; 05:35 p.m.

Thanks Scott.

Jim Strutz - Anchorage, AK , Jul 03, 2010; 08:54 p.m.

A Quantum Battery 1+ is a low voltage battery pack with a nice large reserve. I doubt it recycles the flash significantly quicker than using 4 good NiMH batteries in the flash. It's certainly not as fast as a Quantum Turbo or even a CP-E3/4, and they plug right in to the flash's high voltage port. I used one years ago, but I can't see why anybody would want one for a modern flash.
Sorry Harry, but I think you're better off without it.

Jim Strutz - Anchorage, AK , Jul 03, 2010; 09:00 p.m.

BTW, the 580EX II has a very good low DC to high DC converter built in, so it will recycle pretty fast with the Battery 1+, but it's no slouch with internal NiMH's either. But that internal DC to DC converter heats up the flash pretty fast, and that can be a problem with a 580EX II. A nice advantage to using a high voltage pack like a Turbo or CP-E3/4 is the DC to DC converter is in the external battery pack, so you can shoot more/faster without overheating the flash.

Jim Krupnik , Jul 04, 2010; 06:05 a.m.

Quantum is a grand old name in the photo flash power industry, but Canon has been marketing cheap high capacity power options for it's premium strobes for quite a few years now. I have a few, and I have never had one go belly up on me. They preserve all of the features of the strobe without compromise, even the weather sealing on newer models. They deliver plenty of power to complete most shooting events with full flash performance on a single set of NiMH batteries, and offer a ten second battery tray swap when you go beyond the limit.

They also sport camera tripod screw base mount, Velcro accessory mount to most anything, or user waist belt mount choices as a standard feature. They are also very light weight accessories. Here is a shot of one of three that I use (I think it is the older CP-E3 model), and it is still the best thing since sliced bread for high capacity power with all of my 580EXxx strobes. No cutting corners or doors, no compromise, no loss in recycle time compared to a Quantum solution. I suggest that you reserve your Quantum power supply for non Canon strobes you might own over time, or just use it as a backup power source, and buy a CP-E4 to power your 580EXII today. It really is a factory solution that doesn't beg for a cheaper or better alternative... It simply works as if it was purpose built exactly for a 580EXxx strobes (or an MT-24EX strobe). Then again, it really was purpose built for exactly that type of service. And pretty cheap, to boot.....

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