February 09, 2016, 03:43:02 PM

Author Topic: 7D mark II battery drain  (Read 13265 times)

Marsu42

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Re: 7D mark II battery drain
« Reply #30 on: November 26, 2014, 01:53:24 PM »
Hmmm but there is no ML for the 7DII and likely wont be for quite some time.

Sorry, I forgot this is a 7d2 thread - but maybe there are some people with other cameras around here, too. Atm I don't see ML going anywhere beyond the 5d3, not even to the 70d.

Further, use of ML has historically used more battery power due to more CPU usage to drive all of the enhanced functionality.  So to say that gps save is a powersaving function is a bit of a "marketing" twist.

ML doesn't drain significantly more power when it's doing nothing, i.e. you have no features enabled or very basic ones like the gps powersaver which only runs a short function on camera on/off. And you're free to disable it at any time on camera boot. The things that draw power are focus peaking and generally all live view visual operations.

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Re: 7D mark II battery drain
« Reply #30 on: November 26, 2014, 01:53:24 PM »

East Wind Photography

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Re: 7D mark II battery drain
« Reply #31 on: November 26, 2014, 02:03:56 PM »
Hmmm but there is no ML for the 7DII and likely wont be for quite some time.

Sorry, I forgot this is a 7d2 thread - but maybe there are some people with other cameras around here, too. Atm I don't see ML going anywhere beyond the 5d3, not even to the 70d.

Further, use of ML has historically used more battery power due to more CPU usage to drive all of the enhanced functionality.  So to say that gps save is a powersaving function is a bit of a "marketing" twist.

ML doesn't drain significantly more power when it's doing nothing, i.e. you have no features enabled or very basic ones like the gps powersaver which only runs a short function on camera on/off. And you're free to disable it at any time on camera boot. The things that draw power are focus peaking and generally all live view visual operations.

True but if you are not going to use those functions then why use ML?  Dont get me wrong.  I'm a big ML fan and probobly use Dual ISO on my 5D3 more than without.  However since it's there its nice to have some of those other features enabled but there is a cost to doing so.

I wonder why Alex doesnt take someone under his wing to continue development when he's unable to.  Anyway that's a discussion for another thread.

I hope it does make it to the 7DII eventually.

Marsu42

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Re: 7D mark II battery drain
« Reply #32 on: November 26, 2014, 02:11:29 PM »
True but if you are not going to use those functions then why use ML?

Basic usability: key remapping, rating with a key (for cameras that don't have a dedicated button), pic review brighten/darken, ... little things, but the very annoyances Canon uses to upsell people to more expensive models.

I wonder why Alex doesnt take someone under his wing to continue development when he's unable to.  Anyway that's a discussion for another thread.

I'm seeing ML sailing into troubled waters as alex is the bottleneck and all attempts to expand the dev base have failed so far. But it's indeed off topic, and probably not worth discussing anyway as nothing can be done about it. Point to remember here: Don't expect a stable and working ML on anything but the 5d3.

East Wind Photography

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Re: 7D mark II battery drain
« Reply #33 on: November 26, 2014, 02:27:22 PM »
So for those that use the 7D2 with the battery grip, a quick solution until this gets resolved is you can twist the battery tray lock 90 degrees to unlock which effectively disconnects the battery.  Not so good for carrying around but if it's in your bag it's safe enough.  Maybe add a strip of tape so the tray doesnt fall out on you.

It's a sloppy kludge but it works.


VinniWongo

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7D mark II battery drain
« Reply #34 on: December 06, 2014, 02:43:36 AM »
Last post on this from me. Lens was sent away to Tamron service UK (Intro 2020) and was only away for 4 days. They replaced the lens main PCB. Tested it overnight and all is well with no battery drain  :)

Valvebounce

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Re: 7D mark II battery drain
« Reply #35 on: December 06, 2014, 06:20:19 AM »
Hi Vinni.
That seems like a very good result, quick resolution of a problem is a good pointer for any company.

Cheers, Graham.


Last post on this from me. Lens was sent away to Tamron service UK (Intro 2020) and was only away for 4 days. They replaced the lens main PCB. Tested it overnight and all is well with no battery drain  :)
7D + Grip, 40D + Grip, 20D, EF-S 17-85 Kit lens, EF 70-200 f2.8 L IS II USM, EF 2x III, Sigma 150-500, Sigma 17-70 f2.8-4 C, 50mm f1.8, 550EX, Nissin Di622, Triopo TR-985, Godox FC-16, some Filters Remotes Macro tubes Tripod heads etc!

20D, BG-E2N, 17-85mm, 50mm are pre loved. :)

fragilesi

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Re: 7D mark II battery drain
« Reply #36 on: December 06, 2014, 06:34:11 AM »
Last post on this from me. Lens was sent away to Tamron service UK (Intro 2020) and was only away for 4 days. They replaced the lens main PCB. Tested it overnight and all is well with no battery drain  :)

Great detective work, and I agree with Graham a good response from Tamron. 

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Re: 7D mark II battery drain
« Reply #36 on: December 06, 2014, 06:34:11 AM »

Marauder

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Re: 7D mark II battery drain
« Reply #37 on: February 04, 2016, 07:21:36 PM »
Finally got a 7D Mark II in November 2015.  Weather hasn't been great so I haven't shot with it too much, but very impressed already with the AF system.

Still, finding the battery drain issue described, even with the camera off and GPS disabled.  Charged battery last night and it was 100%, and by the next night it was down to 99% after just sitting in the box (brand new LPE6N Canon battery).
Found this link online:
http://community.usa.canon.com/t5/EOS/Canon-7D-II-battery-drainage/td-p/128736

About 4 down, there is a post from MickvK about it being the LCD in the viewfinder. I tried his test of Manual Focus with power off, then removing the battery and he's right--the OVF goes "gray" without the battery even when off.  Not sure if he's onto something or not, but perhaps the more technical members can comment. 

Interestingly, I  repeated the same steps with my original 7D as well and I get the same phenomenon of the OVF going gray when the battery is removed.   Is his diagnosis likely?  I never really noticed the original 7D battery losing power, but then I'd never checked the actual percentage figure before. 
« Last Edit: February 05, 2016, 12:12:08 PM by Marauder »
Canon 7D, Canon T3i, Canon 100-400L, Canon 200 f2.8L & Various other lenses

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Re: 7D mark II battery drain
« Reply #37 on: February 04, 2016, 07:21:36 PM »