Looking for new alternator

[bs199sg]

I am looking for an alternator that will easily charge up my batteries. I have 2 XS Power D3400 XS Series 12V 3,300 Amp batteries. I am running at max of 4600 watts out of my current system. Not sure how many amps I need for an alternator. I have a 2007 Ford Focus 2.0l Duratec engine.

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[mylows10 5,000+ posts]

A 275 amp is what you'll need

 

[mylows10 5,000+ posts]

Checking for you

 

[mylows10 5,000+ posts]

Can have a 300 amp alt custom built