Just wondering here. I have an 80D, for which I just picked up a BG-E14 grip. I know Eneloop batteries are lower (1.2V) voltage than alkaline (1.5). The Eneloops seem to work OK in the grip. Is it OK to use them in the grip? Any comments on battery life? I've got 24 AA Eneloops, I feel like I may as well use them. Is there any downside?