Batteries are not measured in Amps, but rather as Amps they can emit in an hour. The standard home unit for battery power is AH our Ampere Hour.
At 12 volts the amps in your battery are then described in Ampere Hours or Amps per hour.
From that we get that if the battery was plugged into a 12v device that drew 225 amps, your battery would run out in 1 hour.
Similarly if it was connected to a device requiring 112.5 amps it would take 2 hours to run down.
Wikipedia has stated that this is an approximation, that at really high currents (measured in how many Amps you are currently using) the battery life is shorter than expected and that the Ampere hour is generally supposed to consider a 20 hour cycle of discharge
(therefore meaning lower amps per hour)
This brings the battery back to it's "normal" drainage pattern.
@ 12v and 11.25A your battery would take 20 hours to drain.
Depends on the battery. It is listed on the battery as Cold Cranking Amps (CCA).
modern cars use a 12 volt battery. Amps depends on the battery. Common sizes range from 500-800 cold cranking amps.
Multiply the vots by the amps to find the volt-amps. Or divide the volt-amps by the voltage to find the amps.
Remember that watts are voltage x current(amps) The number of watts you can get from a 48V battery will depend on how many amps the battery can deliver and how much the load can draw.
It takes between 8 and 12 hours to charge a 12 volt battery at 2 amps. The actual time will depending on how much charge is in the battery initially.
That would depend on the size of the battery, you want the amps of the charger to be reasonably proportional to the capacity of the battery.
Not sure about how many Watts your 36 volt charger uses, but you can find out by this formula... Volts X Amps = Watts.
Volts * Amps = Watts 12 Volt * 2 amp = 24 Watts
240 amps AC
It varies from one 9 volt battery model to another. The typical Alkaline 9 volt battery you find in many toys and smoke detectors has 565 mAh (Milliampere Hours) of power. A Zinc Carbon model has 400 mAh. A Lithium has 1200 mAh. There are 1,000 mili amps in 1 amp.
8 hours
They don't. Car batteries produce 100's of amps of current. a 1.5Volt flash light battery produces milli-amps at best.