Originally Posted by alarmguy
Originally Posted by Chris142
It will only put out as many amps as required. Up to 1200. If your 12v accessory only uses 5a that's all it will put out.
^^that^^
How many amps a power source can deliver means nothing in your case, 12 volts DC is 12 Volts DC you can have a source capable of 12,000 amps at 12 volts, makes no difference.
Example, you plug in a 110 volt 7 watt led light bulb in your house on a 20 amp circuit, the light bulbs draws 0.0636 Amps and 7 watts even though the source can deliver 20 AMPS and 2,200 watts,
X3. It can deliver UP TO 1200 amps. The battery in your car can deliver hundreds of amps to power a high-current load like the starter. The keyless entry system is running off the same battery constantly, but it only takes a very small current (maybe 0.05 amp) because that's all it needs to power the radio receiver.