I get that message when I use some 3rd party batts. I just click OK and it works fine.
Does your camera work with the batteries?
sek Cameras: 5D III, 5D II, EOS M Lenses: 24-70 2.8 II IS, 24-105 f4L, 70-200 f4L IS, 70-200 f2.8L IS II, EF 300 f4L IS, EF 400 5.6L, 300 2.8 IS II, Samyang 14 mm 2.8 Flashes: 600EX-RT X 2, ST-E3-RT
Plus lots of stuff that just didn't work for me