1 5d Mark II battery, for a wedding?

At a full day wedding I put 973 shots on it and battery was at 51% remaining.
The oem batt is amazing. 40d gripped with 2 aftermarket were done after a wedding.

This is one time I'd say get a oem canon. The accurate meter is great.

Keep in mind also, the less you chimp the longer the battery lasts. I have put over 2000 shots on one for the 5dII, over 4000 on the 1dIII

THe 5DII with a Canon battery should tell you roughly how many shots you can get...

My wife got about 1000 on her 5DmkII battery.... but mileage may vary depending on factors such as IS, Flash and chimping as others have stated... I'd say at the very least, you should have an extra.

The Canon OEM one has come down significantly in price and they seem to be in stock now as well. My guess is that canon has ramped up production now since the same battery is also used in the 7D.

Shot a wedding today with the 7D and needed to swap out the battery after about 1100 pictures.

thanks for the Amazon link, I picked up to. I shot an 9 hour wedding and did it on 1 battery. I also charged it durning my meal break

nicksan wrote in post #8487408
I shot a wedding this weekend with a 1DMKIII and 5DMKII and I would say they each got just about even amount of shots...maybe 400-500 shots each. The battery meter still showed almost full. But I do have and brought battery backups b/c you never know when one would fail.

More than likely, you can do an entire wedding with one battery + backup. Should be good for 1500+ shots, especially if you don't turn your camera off. (i.e. let it go into sleep mode and don't switch it OFF...)

is this true? and why??

bnlearle wrote in post #8487446
http://astore.amazon.c​om/bobear-20/detail/B001XB7WOC

They work just as good and will cost you under $20 (after tax/shipping). There's you answer

Bobby

thanks for the link.

does anyone know besides not being able to transmit shot info, etc. if there are any other downfalls to this non oem battery?

might it fry or to a lesser degree negatively impact the actual camera's electronics, by means of providing different voltage, etc. to the camera, than the oem battery?

RiaGurl wrote in post #8853111
thanks for the link.

does anyone know besides not being able to transmit shot info, etc. if there are any other downfalls to this non oem battery?

might it fry or to a lesser degree negatively impact the actual camera's electronics, by means of providing different voltage, etc. to the camera, than the oem battery?

Other than the stories of some laptop computers bursting in flames due to defective batteries (I think all manufactured by Sony) I've yet to hear of a camera damaged by using a non-OEM battery.

The cameras themselves have a voltage regulator built into their circuitry. It's what shuts the camera down when the battery voltage gets too low. If you're really worried that the battery might hurt the camera by putting out too much voltage, test it with a simply voltmeter when fully charged and compare the voltage reading to the OEM battery. I doubt you'll see much difference if any.

Usually "cheap" aftermarket batteries suffer at worst from poor construction, shorter life, fewer shots per charge or poor fit, like some of the 1D series batteries made by one company. The batteries themselves were fine, but the end caps, which were an intergal part of their attachment mechanism to the camera, were poorly made and very hard to latch properly.

Aszental wrote in post #8482683
Hey.

I was wondering how many shots you can get out of a 5d Mark II battery?

Have an upcoming wedding, wondering whether i should buy a spare or not.

Thanks!

Even if you can potentially get hundreds of thousands of shots from a single battery, you take a spare along because of the same reason you take ANY backup gear along.

A battery is an electronic device. Admittedly new batteries do not usually fail, but anything can happen. If your battery decides to go belly-up while you're out in the back yard shooting birds, oh well....I'll come back tomorrow. If it decides to pack it in while the bride is walking up the aisle with dad, you're totally and royally screwed.

The cost of one battery, even if it's an "overpriced" OEM one, is a small fraction of the financial disaster that blowing a wedding would be.

With enough bad luck, you charged the battery but the charger decided to never start charging, or ended early. So you take your only battery to the wedding, to find that you only had 20% capacity from the start.

Two batteries in a grip started showing almost empty at my last wedding, I have no idea why since I charge everything the week leading up to the wedding. I just swapped them out for new cells, it didn't really matter. Two BP511s are usually enough for a whole wedding day, and the new 5DII batteries are meant to be even better.