The dummy battery does not provide enough power to take pictures with the mirror up?

[Rosssiiii]

Hi everyone,

Yesterday I discovered that when I use the dummy battery with the Canon 50d and I try to take a photo the camera turns off at the exact moment it raises the mirror and remains with the it stuck in a raised position, then I reconnect the battery and the mirror lowers again.

There are no problems capturing photos when the camera is in live view mode because in this case it only has to activate the shutter.

I tried connecting the dummy battery to various 5v power banks and the transformed voltage is 8.42v, the one the camera receives, so there shouldn't be any problems but still this happens.

Perhaps more than not providing enough current something strange happens and I don't understand if it's the software side, however it's just a curiosity to understand since fortunately I was able to take photos anyway keeping the mirror always raised with the live view.

 

[LouisPepe]

Hi everyone,

Yesterday I discovered that when I use the dummy battery with the Canon 50d and I try to take a photo the camera turns off at the exact moment it raises the mirror and remains with the it stuck in a raised position, then I reconnect the battery and the mirror lowers again.

There are no problems capturing photos when the camera is in live view mode because in this case it only has to activate the shutter.

I tried connecting the dummy battery to various 5v power banks and the transformed voltage is 8.42v, the one the camera receives, so there shouldn't be any problems but still this happens.

Perhaps more than not providing enough current something strange happens and I don't understand if it's the software side, however it's just a curiosity to understand since fortunately I was able to take photos anyway keeping the mirror always raised with the live view.

You may have a problem with your choice of 5v power for the dummy battery. As you suggest it’s likely the current is inadequate. For most AC to DC power supplies, you’ll see the output amperage on the power supply. There are two or more indicator locations on the 50D (according to the user manual I just read) that show the battery condition. That applies whether you are using a real battery or the dummy battery. Check your camera to see if it registers a full battery when using the dummy battery. I have a third party brand dummy battery that I use with my Canon 60D. That power supply provides 30 watts (1-2 amps) at the 8.4v required. It’s not the voltage that’s the likely problem with your equipment. It’s probably the amperage (current).