Batteries are very similar to capacitors, they don't change voltage instantly.
But that doesn't mean you can't get 14.8V at the battery terminals more or less instantly. Batteries have a surface charge which is kind of instant and they have internal resistance.
So, how much current does it take to get to 14.8V? We'll assume battery is at 12.2V, has a resistance of 10mohm, and accepts a surface charge of 1.5V.
I = 14.8 - (12.2 + 1.5) / 0.01 = 110A
If you apply 110A to one battery it will "instantly" reach 14.8V at its terminals.
BTW, the battery is dissipating 120W. It will get hot!
MEXICOWANDERER wrote:
Connect enough chargers to obtain 14.8 volts INSTANTLY