Can a 2g alternator handle two amps?

[LightningGSX]

Originally Posted by Alpine TSi

An easy way to determine if your alternator is safe is to add up your total amperage draw, if it exceeds 120% of your alternators output rating, you need a bigger alternator.

Amp draw = watts / voltage.So, for example, 800 watt amp / 13.8 = 58 amps.And, unless you drive around at full volume with the amps' gain/sensitivity all the way up, take about 50%-75% of that, and you'll have somewhere in the ballpark of your average current draw.