"Change or Charge Battery" Error or Bug with Canon R5 Mark II

Spoke to Canon today. I got the typical line that this is very new and there are not enough reports/data for them to create a service advisory, but was also told as an aside that I am not alone with this issue. I think we may hear more about this as colder temps set in.
 
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Interesting, thank you for reporting back. I suspect there is some sort of sensor that is underreporting available power or these batteries are not great, I'm hoping for the former here, I have 6 of these things that I would rather not have to send back.
 
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Interesting, thank you for reporting back. I suspect there is some sort of sensor that is underreporting available power or these batteries are not great, I'm hoping for the former here, I have 6 of these things that I would rather not have to send back.
I installed 1.0.2 and today my issue appears to be resolved. I was out in much colder temperatures and for much longer than when I first noticed the drain. Battery performances not problematic. No changes to settings or configuration.
 
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I installed 1.0.2 and today my issue appears to be resolved. I was out in much colder temperatures and for much longer than when I first noticed the drain. Battery performances not problematic. No changes to settings or configuration.
This is good to hear. I plan to take a break in a week or 2 and planned to take my cameras out on a road trip.
 
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CPS currently has my Mk II looking into this issue. Will report back if camera comes back and works in the cold (and if it doesn’t).
Update, but not much of one. I received this response today in an email, “We took test pictures/videos for more than an hour in cold conditions and we also checked inside the camera for corrosion/loose connections and everything was normal. We are requesting that you send in your batteries/lens as well as any other accessories used during the time of the issue”.
So, I’m sending in 6 LP-E6P batteries, 2 lenses, and battery grip. (All 6 batteries work fine in the Alaska cold in my r5 mark I).
If this was a controlled test, shouldn’t they be able to provide the temperature of the body at testing and ambient temperature? Stating they tested in “cold” conditions seems beyond vague. I’ve never gotten 30 minutes per battery at 0 degrees F.. hopefully I can get their testing conditions.
 
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I have been out recently in far colder temperatures than when I first saw the issue. It was (-14C) this am. I have not seen this battery drain issue since updating to 1.0.2. Battery use is more or less what I was experiencing with the R5.
 
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I have some new information, and I am sorry to report that my declaration that 1.0.2 resolved the issue was premature. In looking back at my outings immediately after updating I was only looking at the ambient temperature and wasn’t thinking about the sun hitting the camera and warming it. Yesterday AM I went out with the camera reporting 100% charge. Ambient temperature -11C (12F). Within an hour the camera was reporting only 21% charge remaining. The camera was in sleep mode the entire time. A while later I stopped to have a snack and let the camera sit on a bench in the sun. The reported charge jumped to 84%. Today I went out in ambient temperatures of -14C (6.8F). Extremely overcast. About 40 minutes in I put the camera to my eye and had no power. It remained in this state for the rest of the outing. By the time I arrive home in the warmth of the car, the reported charge had jumped to 44%.

I used different batteries for each outing.

This is in no way reflective of my experience with the original R5 and for those of us who need to rely on the camera in cold weather I'm starting to think that we have a big problem here.
 
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I have had the same message "Change or Charge Battery" but only with battery grip BG R20. It is a bit random, but mostly when inserting freshly charged batteries. I am using a Hahnel twin charger. To get round it I slide the battery tray out of the grip a little and pop it back in, just once usually "cures" it, occasionally I might have to do it a few mins later. Firmware version eosr52-v102.
Edit: this is at normal room temperature. I haven't noticed that outdoors in the cold makes any difference
 
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I sent my camera back to Canon for warranty repair. My issue was so bad that just putting the camera in the fridge for 30 minutes with a full battery would generate the error. I photograph polar bears and aurora on the shores of Hudson Bay with temperatures down in the -50s C, but this error happens when temperatures don't even drop to freezing.

If I removed the battery from the camera, it was still at 93% charge. If I plugged in a USB charging cable, I would get a Battery Full message within minutes, but the camera would still not operate—indicating the change or charge battery message.

They replaced the printed circuit board and upgraded the firmware to 1.0.2. I put the camera in the fridge for 30 minutes to test the repair. When I took it out, it operated perfectly. I placed it on the shelf to warm to room temperature and when I turned it back on, I got the same error.

I need to do further testing over the next few months. I'm back up to the Arctic in mid-February but I'll be bringing my old 5Ds along as a backup just in case the R5ii craps out.
 
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I sent my camera back to Canon for warranty repair. My issue was so bad that just putting the camera in the fridge for 30 minutes with a full battery would generate the error. I photograph polar bears and aurora on the shores of Hudson Bay with temperatures down in the -50s C, but this error happens when temperatures don't even drop to freezing.

If I removed the battery from the camera, it was still at 93% charge. If I plugged in a USB charging cable, I would get a Battery Full message within minutes, but the camera would still not operate—indicating the change or charge battery message.

They replaced the printed circuit board and upgraded the firmware to 1.0.2. I put the camera in the fridge for 30 minutes to test the repair. When I took it out, it operated perfectly. I placed it on the shelf to warm to room temperature and when I turned it back on, I got the same error.

I need to do further testing over the next few months. I'm back up to the Arctic in mid-February but I'll be bringing my old 5Ds along as a backup just in case the R5ii craps out.
I feel for you. I stopped updating here because my problem is all over the place. In a nutshell the camera is not consistently reliable in cold weather, however. Some days it is ok, but there seems to be a threshold level where it can swing either way based on overall conditions. My conversation with Canon has more or less resolved with them telling me that I can keep them updated with new findings, but there is no service advisory for the issue. I know two other people who have opened service tickets for this. I love the camera, but it is unfortunate that I'm not able to have as much confidence in it as I had with the R5. My outings are casual these days, but if I was out on a mission critical shoot I would likely grab the R5 at this point.
 
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Update, but not much of one. I received this response today in an email, “We took test pictures/videos for more than an hour in cold conditions and we also checked inside the camera for corrosion/loose connections and everything was normal. We are requesting that you send in your batteries/lens as well as any other accessories used during the time of the issue”.
So, I’m sending in 6 LP-E6P batteries, 2 lenses, and battery grip. (All 6 batteries work fine in the Alaska cold in my r5 mark I).
If this was a controlled test, shouldn’t they be able to provide the temperature of the body at testing and ambient temperature? Stating they tested in “cold” conditions seems beyond vague. I’ve never gotten 30 minutes per battery at 0 degrees F.. hopefully I can get their testing conditions.
Update Pt 2… camera and accessories are being returned with no corrective actions taken. The Mark II is essentially a paperweight to me if it can’t function in the cold, so I’ll be looking to unload it. Meanwhile, my R5 has been running flawlessly down to -45F, sustained, over the previous week.
Synopsis from CPS…

Repair Complete Comment:​

Your product has been examined we tested both batteries separately in the camera with your lens connected and they were both normal. We also tested both batteries in the battery grip with the lens attached and they still worked normally. We are sending back a paper from the owners manual with information on how long the batteries should last with which settings. The unit was cleaned and checked. If you have this problem again, please send in a video of the issue as well as any additional information you can provide. Product functions were confirmed. Have a nice day and thanks for choosing Canon!
 
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Update Pt 2… camera and accessories are being returned with no corrective actions taken. The Mark II is essentially a paperweight to me if it can’t function in the cold, so I’ll be looking to unload it. Meanwhile, my R5 has been running flawlessly down to -45F, sustained, over the previous week.
Synopsis from CPS…
A sadly very typical answer by service departments. I've had exactly the same answer by Leica (twice!).
"Something is rotten in the state of Denmark".
Since the R5 didn't have this issue, maybe the suffix "II" stands for cameras that should only be used under tropical skies... ;)
But in your case, I would heavily complain and insist to have it fixed.
 
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Both the camera and battery are new, so not surprising there may be "insufficient" reports at this time.
Has anyone tested the R5m2 with the LP-E6NH batteries (from the R5) under these same conditions (very cold) and observed the same error messages (or battery drain with the camera)?
I do understand there are features/functions that are not available with the older batteries (I have both), but just a thought to isolate the root cause, as the reports here indicate the R5 and LP-E6NH were okay (or as intended).
 
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