It had been first rumored that the 4.7" iPhone 6 would get a 2,100 mAh battery to power the larger 4.7" screened iPhone 6. But recent leaked battery photos show it to be 1,810 mAh. That's a modest increase over the 1,560 mAh found on the iPhone 5s. I'm tech ignorant about these batteries. If the 1,810 mAh is it, do you think it enough to power the larger 4.7" screen?