Canon 750d indicates low battery when use back to normal when restart

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Canon DSLR

Repair and disassembly guides and support for the Digital SLR line of cameras by Canon, including the Eos series first introduced in 1987.

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Sima Choi @simachoi

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Gönderildi: 13 Eyl 2020

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Canon 750d indicates low battery when use back to normal when restart

It has been 2 years since I purchased my canon 750D. It was working fine untill the last month. Even if the battery is fully charged , when turned on the camera shows the battery is full but after few minutes of use the battery runs out and the camera is turned off with the error message “change the battery pack”. when turning the camera on again and right away, it starts working again and the same scenario is repeated. I tried the battery door trick and the cleaning trick too but nothing seemed to work. I haven’t tried a new battery set yet though. Honestly I am afraid to find out my camera is out of use.

I searched for solutions on the internet before posting this here. I didn’t find a quite matching description of my problem. that’s why I thought I should ask by myself.

Anyone faced this same problem before ??

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Fix it Phil @fixitphil_yt İtibar: 103 5 · Answer 1 · 2020-10-01T10:22:19-07:00

What you need to do first is test with another battery because if it's the current sensing circuit you won't be happy with this answer, the current sensing circuit is the flex board to the left of the mirror assy.

In the picture you can see that the camera on top does not have this flex, the problem is, to replace the current sensing circuit you need to replace the whole mirror assy, it comes as one part from Canon and it's expensive, also you need to do a full calibration after (sensor, af, shutter) which is time consuming), you are looking at about 3 - 4 hours of work.

You could try to hunt down just the flex but you never know in what condition it is, another solution is to try to fix the current sensing circuit, then you would have to take it to someone with the right skills.

Edit: if you are still under warranty take it to an authorized Canon service.

Canon DSLR

Canon 750d indicates low battery when use back to normal when restart

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