You should correct that. Any system that uses a certain VOLTAGE will only take as much AMPS as it needs. Keep in mind AMPs x Voltage = Watts. if you have 10.8 Watts @ 7.2v you have 1.5Amps. Watts really should not be a measurement. You should should use Amps. A laptop is going to require a certain voltage (over voltaging will kill a system) however putting more amps (say 7.2v @ 3500ma) will not kill a system as long you use the proper voltage (7.2 with 7.2 systems, 9 with 9, 12 with 12, etc..)
A system will only draw as much current (amps) as it requires. A power supply uses amps as the max the power supply will put out under the best conditions. This is why a 265 Watt PSU on a computer might put out a consistent stream of 180 Watts, but if you go over 180 on a regular basis, it will overheat and break down the components. That said, a PSU For a laptop will only under the worst conditions draw the max amps from a power supply. Worst = charging battery, HDD access, optical access, screen/GPU/CPU at max, etc...
Even then, apple builds in extra current at the worst for good measure. Cooling on the other hand with apple power supplies are another matter altogether (remember the G3 and the PB 190/5300 PSUs setting on fire?)
A system will only draw as much current (amps) as it requires. A power supply uses amps as the max the power supply will put out under the best conditions. This is why a 265 Watt PSU on a computer might put out a consistent stream of 180 Watts, but if you go over 180 on a regular basis, it will overheat and break down the components. That said, a PSU For a laptop will only under the worst conditions draw the max amps from a power supply. Worst = charging battery, HDD access, optical access, screen/GPU/CPU at max, etc...
Even then, apple builds in extra current at the worst for good measure. Cooling on the other hand with apple power supplies are another matter altogether (remember the G3 and the PB 190/5300 PSUs setting on fire?)