I wonder if anyone else has had some "issues" with the Wasabi or other after market batteries. Actually, I am not sure that the "issues" I have had were related to the battery or just coincidental. Anyway, the last time I had a problem was Friday as I was shooting with my M5 at a school event indoors. The camera "froze" on me. None of the controls would work (or the touchscreen) and I could not even turn it off! I activated the switch but nothing happened. I then decided to remove the battery from the hand grip. When I did that, the camera started working again. The switch worked, etc. I replaced the battery in the grip and all was well.... I remember having another strange camera behavior some time ago that was corrected by removing and reinstalling the battery. If my memory serves me, the battery at that time was also the Wasabi brand. I sometimes have problems with the responsiveness of the controls in my M5, but I'm not sure if it's my technique or the camera. Some times I find that I had some setting or other incorrectly set and that was the problem. Other times I cannot figure out what if any the problem might be. Any thoughts? Thanks!