Macca1980... I can't answer the first two questions but I think I know the answer to the last one. Canon battery meters are calibrated for alkaline batteries and you are probably using NiMH batteries which, even when fully charged, have a slightly lower voltage than alkaline batteries. The good thing is that NiMH will hold a functional voltage much longer than will alkaline batteries, so don't worry about the battery meter until it shows that it is time to replace the batteries. Hope this helps.
Thanks for this , apologies never seen your answer before I asked again.
Apology not necessary. Like you, I would like for my camera's meter to show 100% when my NiMH batteries were freshly charged also. I understand how you feel. Take care.
