Alley in Pisa, Italy

by Lars Kotthoff

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4
votes
2answers
3k views

How can I fix a “Cannot communicate with battery” error on Canon 7D?

If I see the "cannot communicate with battery" error message on a Canon 7D, is there any way to fix it without sending it back to Canon?
11
votes
3answers
3k views

What are the problems with using generic LP-E6 batteries with a 5D/7D (if any)?

I've got a 7D with the LP-E6 battery that came with it, but would like to get some spares (along with a battery grip) With my previous camera (450D) I used generic batteries (and generic grip) and ...