How Many Amps Does An Alternator Put Out. An alternator should put out between 135 and 15 volts of power. The SI is up to full output at about 1800 RPM where the DL requires significantly more.
Since this is the rated test speed this number is usually used for the alternators rated output. There is no spare current being produced if only 20A is demanded- where would it go. The DC-DC converter wont be able to keep up with even a 1 kW drain headlights AC and your ear blasting amplifier.
A fullsize gmc and chevy only comes with an 80 amp.
The SI is up to full output at about 1800 RPM where the DL requires significantly more. The amperage output is usually listed as the maximum output of the alternator. Most late model alternators produce 120 to 155 amps or more. For others its normal to see as high as 16 volts for long stretches.
