Does amps matter on alternator?
Amperage is basically the amount of electrical current your alternator can supply.
That is, your alternator will only supply the amount of amperage a particular component demands—and no more.
So high-output alternators will not harm your components or charging system, no matter how high you go with the amps..
How many watts does a 200 amp alternator produce?
2880 wattsA large alternator can be 200 amps or more. 14.4 volts x 200 amps = 2880 watts.
How many amps does a 12v alternator put out?
The output of the alternator ranges from 40 Amp up to 120 Amp.
How many amps is an alternator supposed to put out?
Most late model alternators produce 120 to 155 amps or more. Current output increases with engine speed, from around 20 to 50 amps at idle up to the unit’s maximum output at 2,500 RPM or higher (refer to a service manual for the exact charging output specifications for your vehicle).
How many amps does a car use at idle?
Typical Current Loads for Automotive Systems, Lighting and Accessories: Engine Idling (no lights or accessories on) – 35 to 50 amps.
How do I increase alternator output at idle?
Improving Alternator Output at Idle Speed If you only require a little more power at lower engine speeds you may be able to use a smaller pulley. The smaller pulley turns the alternator faster at lower speeds thus making more power. When using a smaller pulley care should be taken not to over rev the motor.