topic Re: EOS r6mii randomly showing error 80 in EOS DSLR & Mirrorless Cameras

EOS R6 Mark II randomly showing error 80

jbear2013 — Thu, 24 Jul 2025 12:33:13 GMT

My brand new EOS r6mii camera keeps randomly showing error 80 while I'm shooting. Powering the camera off and turning it back on, and also taking out the battery and re-installing it temporarily solves the problem, but it will randomly pop up again and I have to do those steps again, which is annoying. I've looked up error 80 and Canon mentions that there could be a problem with the electrical components of the camera if it keeps appearing. I do have 3rd party batteries that state they are compatible that I have been using and I feel like I noticed the issue soon after I popped one into my camera. I can't remember for sure though since it was weeks ago. Could the error be caused by my camera not recognizing my battery like it would with an actual Canon battery? Or should i be worried about another issue?

Re: EOS r6mii randomly showing error 80

shadowsports — Wed, 07 Feb 2024 11:23:46 GMT

Greetings ,

This should be addressed immediately. Reset the camera to defaults both main and custom settings. If you are using any third-party accessories, remove them from the camera, lens, battery, etc

Now test with a (replacement) compatible UHS-II full size memory card formatted in the camera. Canon battery and one or more Canon lenses.

Note, memory cards should only be purchased from a reputable source. Online retailers such as B&H and Adorama. Best buy is pretty safe too. Avoid Amazon.

If the error persists, exchange the body. Don't wait, don't hope. This is not the way you want to start a new camera experience out. Let us know the results once tested.

Re: EOS r6mii randomly showing error 80

jbear2013 — Sat, 10 Feb 2024 04:27:27 GMT

I have done what you recommended with the lens (I only have Canon lenses) and the battery, and I have reset all my custom settings. So far, I have not noticed a problem. I will keep testing it out.

Re: EOS r6mii randomly showing error 80

redneksis — Fri, 18 Oct 2024 23:10:55 GMT

I have the same issue with my R7. When I use my old 5D MarkIII and 7D Mark II original LP-E6 batteries camara gives error 80 often. But If I use R7 new battery LP -E6NH no problem on there. If you know the reason please share with me.

Re: EOS r6mii randomly showing error 80

Tronhard — Sat, 19 Oct 2024 04:00:03 GMT

Canon do not recommend using 3rd party batteries, but if you do you need the most modern ones, not the LP-E6 equivalents. The newer Mirrorless cameras use a lot more energy than the DSLRs, that is why the LP-E6NH batteries came out, they offer more energy to provide for all those high-end features, sensors and processors. Those have now been replaced by the LP-E6P that have an even greater energy output for even more performance and there are firmware updates to allow the current mirrorless bodies to use those batteries.
I suggest you download the latest firmware for future reference.

Re: EOS r6mii randomly showing error 80

skramit — Thu, 24 Jul 2025 06:46:42 GMT

I suppose my gripe is, the 3rd party batteries will work fine for 7 hours, then randomly you get an Error 80. You pull the battery out, put it back in and youre good for another 8 hours. It's really annoying and can hit at any moment. I'm sure Canon have designed it this way 😉