topic EOS R5 Ml II hot after idle in the backpack in EOS DSLR & Mirrorless Cameras

EOS R5 Ml II hot after idle in the backpack

thegios — Sat, 18 Jul 2026 04:12:52 GMT

Ok here's something strange that happened to me today for the first time in 2 years I've had this camera.

I came back to the hotel around 19.30 after a day walking in Montreal. I've kept the camera always hanging on my neck with the strap just to put it back into the backpack for the last hour of walk. I changed battery just a few minutes before putting the camera in the backpack around 18.00, to shoot a couple of photos, so battery in camera was at 100%. Once to the hotel I took the card out to transfer pictures on an external SSD, then I put card back in, put the camera in the backpack again and I left the backpack on the table, had a shower and went out without the camera.

I came back three hours later, opened the backpack to take the camera to download some pics on the phone and found it very hot: the heat was concentrated at the back, behind the LCD and in the battery slot. The camera switch was off. When I turned on the camera the battery was at 50%.

I removed battery (that was a little hot as well) and let it cool down, it took 10 minutes.

The camera is working fine, but I have no idea what may have happened.

Re: EOS R5 Ml II hot after idle in the backpack

Waddizzle — Sat, 18 Jul 2026 06:13:53 GMT

Did you ever switch the camera off?

Re: EOS R5 Ml II hot after idle in the backpack

SignifDigits — Sat, 18 Jul 2026 09:30:29 GMT

Canon battery or aftermarket? Since you have multiple batteries, I would suggest you test with each to see if the problem is associated with just one of them. If it is a faulty battery then you should stop using that battery and recycle it.

Re: EOS R5 Ml II hot after idle in the backpack

thegios — Sat, 18 Jul 2026 12:54:55 GMT

Yes

Re: EOS R5 Ml II hot after idle in the backpack

thegios — Sat, 18 Jul 2026 12:55:43 GMT

Canon original