03-27-2026
05:30 PM
- last edited on
03-29-2026
10:10 AM
by
James_C
Brand New R7 - My Canon battery was completely charged before I used it before a family session. The camera had 3/4 left after session. Brought it home, it was left in On mode, but is set to sleep after 3 min of no use. I noticed about 5 hours later the camera was warm as was the battery and it was also dead. Is that normal? Do these cameras always need to be turned off? My DSLRS would last for days even in sleep mode and I never had an issue like that before. No after market products, Canon battery and Canon 28 - 70 RF lens with it. Is there another setting that would drain or make it warm just sitting in sleep mode?
Solved! Go to Solution.
03-29-2026 10:14 AM
I intend no disrespect in saying that turning a camera off is neither laborious or time consuming. It's just commons sense to turn a camera off when it is not it use. And turning it back on for another session is equally quick.
03-29-2026 10:40 AM
Sure, I understand that. But when I have two cameras strapped to me for a wedding day and I need them for a full 12 hours, I'm not going to turn them off. They need to be on and ready. I'm simply trying to figure out what I can expect as far as battery life, and I need to figure out if this is a camera flaw, or if this is how it's going to be. This is my first mirrorless camera, so I want to act accordingly on a wedding day if I need to bring extra batteries, and how many. But if this is a camera flaw I would like to act within the time frame to return it, or try different things to see if it is truly a flaw. I understand turning it off between sessions during the week, but on a wedding day I need all my cameras working and on at all times, because most of the time I have two strapped to me and an extra one in my case.
03-29-2026 10:50 AM - edited 03-29-2026 10:58 AM
“ Brought it home, it was left in On mode, but is set to sleep after 3 min of no use. . I noticed about 5 hours later the camera was warm as was the battery and it was also dead. “
“, I'm not going to turn them off. “
—————
I suggest that you contact Canon Support directly.
03-29-2026 10:59 AM - edited 03-29-2026 11:14 AM
Greetings,
I can only share my experiences with the body's I've owned. I've never used airplane mode. I've only ever disabled Wi-Fi and Bluetooth unless needed (using actively). I've never had any issues with battery performance. Draining or longevity. I don't leave batteries in my camera for days at a time. Maybe a day or two but never longer. I'm also one who turns power off frequently, and doesn't chimp much, except for weddings. This is the same for any Rebels I owned and the 6D mKII prior to the R5 C.
If I were switching between two body's quickdraw, I may leave the cameras on and allow them to go to sleep but not with Bluetooth and Wi-Fi enabled. I'd probably use some type of dual sling or spider holsters. I also have two to three batteries in my pocket ready to go and I wouldn't leave the camera on for days at a time.
I know some people use airplane mode but I've never seemed to need it. With it enabled Bluetooth and Wi-Fi definitely won't drain the battery unless there's another problem.
~Rick
Bay Area - CA
~R5 C (1.1.2.1), ~R50v (1.1.1) ~RF Trinity, ~RF 100 Macro, ~RF 100~400, ~RF 100~500, ~RF 200-800 +RF 1.4x TC, BG-R10, 430EX III-RT ~DxO PhotoLab Elite ~DaVinci Resolve Studio ~ImageClass MF644Cdw/MF656Cdw ~Pixel 10 ~CarePaks Are Worth It
03-29-2026 11:35 AM
Context is everything. In your case the solution is simple: extra batteries.
03-29-2026 12:17 PM
Thank you. Yes I intend to always leave Wi-Fi and Bluetooth off as I never use those on my camera. Just trying to figure out if Canon has an actual number on how long it will go on sleep mode and being used occasionally in that time frame? Just trying to figure out if this is the right camera for me, or if I should return it while I still have that window open. I'll keep testing it in different ways.
03-29-2026 12:22 PM
Correct. And I always bring plenty of charged batteries with me. I'm just trying to see what my limits are with this camera before I actually bring it to a wedding day. I want to be fully prepared and know what to expect in terms of battery life. So I'm just trying to figure out if I leave it on sleep mode all day and use it randomly throughout the day, how long can that camera last on one battery? I was trying to get other peoples experience with this specific camera. It was ordered new, so I can return if it's not for me.
03-29-2026 12:26 PM
Yes, I will probably reach out to Canon. I want to test my limits with it before I go to an actual wedding day. I just find it strange that even on sleep mode it gets that warm. Simply trying to get people's experience with this specific camera. Yes I can go online and see what the battery life expectation is, but I don't think that's specific to sleep mode. But maybe I'm wrong.
03-29-2026 03:56 PM
I also agree you should contact Canon support at 1-800-OK-CANON. Having camera on and letting it Auto Power Off is a common mode when traveling/sightseeing for example. Something is going on if the camera is warm to the touch.
I suspect Canon’s statement about removing battery is related more to a general good practice. Batteries can leak.
03-29-2026 04:28 PM
If weddings will be your primary focus, I'd consider a full frame body over an APS.-C body.
https://www.canon-europe.com/get-inspired/tips-and-techniques/aps-c-vs-full-frame/
~Rick
Bay Area - CA
~R5 C (1.1.2.1), ~R50v (1.1.1) ~RF Trinity, ~RF 100 Macro, ~RF 100~400, ~RF 100~500, ~RF 200-800 +RF 1.4x TC, BG-R10, 430EX III-RT ~DxO PhotoLab Elite ~DaVinci Resolve Studio ~ImageClass MF644Cdw/MF656Cdw ~Pixel 10 ~CarePaks Are Worth It
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