That depends on the characteristics of the battery. The numbers you quote don't give enough information. 4 Ah is simply a measure of the battery's total energy storage (for rexample, 1 ampere during 4 hours, at the specified voltage), not of how fast it can be released.
The first and second energy level will hold maximum of 2 and 8 electrons.
1) Any physical process is subject to the Second Law. Assuming otherwise would not be a realistic description of our Universe. 2) The maximum possible efficiency is a factor of 1 (equivalent to 100%). If some energy is wasted, as is usually the case, the actual amount will be somewhat less.
8 electrons maximum
12 watts or 12 joules of energy.In one second, 1 coulomb is 1 amp, so the power is 1 amp x 12 volts = 12 watts, and in that one second, that is 12 Joules of energy.
1 million ton of energy per second
Energy = 4Ah x 3600 seconds x 12 volts = 172,800 Joules
8 maximum
8
8 electrons maximum
8
8
Maximum of 8 electrons in second energy level.
The second energy level of atoms can hold a maximum of 8 electrons.
8
2
8 electrons
The first energy level has a maximum of two valence electrons. The second and third energy levels have a maximum of 8 valence electrons.