KM 7D Battery

neilt3 wrote:

If the batteries are fine in the 5d , just not the 7d , then it's clearly a fault with the camera .

One thing that can cause this is if the internal battery has failed . ( the one that stores the settings , date/time etc when the main battery is removed .

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Or , something has gone on the main board .

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The only solution for repair would be either replacing the internal battery , or if that didn't work , trying to figure out which board is at fault .

Trouble is , unless you are competent to replace your battery yourself , paying some one to do it isn't economically viable .

Likewise if it's a board fault , even if you get someone to look at it , new parts aren't available and a workshop are unlikely to be prepared to use salvaged parts as they can't offer a warrantee on the work .

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So the likely only solution is to remove the battery after use until next needed .

Neil, he said both cameras work fine... both the 5D and the 7D.. the batteries " WORK " in both cameras.. His complaint is that in the 7d, the batteries lose their charge after sitting for  a few weeks. He seemed to elude to the fact that he can keep the battery in the 5 D for a year and turn it on and the camera will be as fresh as if it was just charged.

That has nothing to do with internal battery function. Every electronic device as some parasitic drain. apparently the 7D has more parasitic drain than the 5D. IN my opinion , having a 5 D and a 7D that actually work even after sitting for three weeks is wonderful.