more batts bad for alternator?

[Beatin' 10+ year member]

My uncle says adding a second battery in the trunk is going to cause harm to my 90A stock alt.

Is this true? I'm reading mixed answers, what the f*** is going on?

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[NASTY08IMPALA 5,000+ posts]

My uncle says adding a second battery in the trunk is going to cause harm to my 90A stock alt.
Is this true? I'm reading mixed answers' date=' what the f*** is going on?[/quote']

Ur uncle doesnt kno what hes talking about lol

 

[Beatin' 10+ year member]

Ur uncle doesnt kno what hes talking about lol

he said it's going to cause the alternator to work harder charging the batts and that I would need a HO alt. My system will never pull more than 1000watts rms gross (without losses), so I don't know how a second batt will harm the alt.

 

[NASTY08IMPALA 5,000+ posts]

he said it's going to cause the alternator to work harder charging the batts and that I would need a HO alt. My system will never pull more than 1000watts rms gross (without losses)' date=' so I don't know how a second batt will harm the alt.[/quote']
It wont adding a 2nd batt will reduce the strain on ur alt..yes it will take a lil more to charge a secondary battery but not that u will notice at all

 

[Jeffdachef 5,000+ posts]

There's an even bigger a strain on your alt if you dont have enough reserve capacity to meet your current draw.