Darthfeeble
But you can call me Steve
I have had good luck with them in the past on my Canon 5D and 5DII, as well as the fuji and Olympus cameras I've had. I had a Leica M8.2 and didn't have trouble with them there either. I got a Leica M9 and didn't get off brand batteries because I had read that there were some issues with them. I have a Canon 6D now as well as the wife's 60D that simply will not operate with the off brand that I bought for the 60D. I wonder if the improvements in the processors includes the same sort of programing that I suspect is used in my Epson printer that will not operate with non-Epson cartridges.