Originally Posted by jhsrennie
I find the N7 charger takes about three hours to charge my N7 from near zero to 100%. However a combination of max screen brightness and a really CPU intensive game will flatten a fully charged battery in about three hours. So there are circumstances in which the charger could struggle to keep up.
From what I can tell: no. The charger will always be charging the battery, albeit slower when on max brightness and max cpu load. From what I know the charger doesn't feed its max capacity when it's just charging, but the amps are upped when you use the nexus while charging.