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<blockquote data-quote="Ali1" data-source="post: 2271204" data-attributes="member: 567924">So what&#039;s the deal with these statements going around saying that extra batteries will not help unless you listen while the car is off. I have a stock alt 105amps. It charges at 14.2 @ idle. I bought a HO alternator, failed on me twice, so i am going to stick with the stock. My stock kept a 14.2 charge at idle, while my HO alternator kept a 12.1 charge no matter what....So, i am thinking about getting 2-3 yellowtops in the trunk, since i can get them for a great deal instead of the HO alternator. Would that help me while I am driving? I never use my sounds while they are off. I just want the facts because i keep hearing 2nd batteries will/wont help and I&#039;m just confused.....if i add 2-3 yellowtops in the trunk, will they help with steady voltage or no?Do they benefit anything besides while the car being off?big3 has already been done in 1/0G!</blockquote>

[QUOTE="Ali1, post: 2271204, member: 567924"] So what's the deal with these statements going around saying that extra batteries will not help unless you listen while the car is off. I have a stock alt 105amps. It charges at 14.2 @ idle. I bought a HO alternator, failed on me twice, so i am going to stick with the stock. My stock kept a 14.2 charge at idle, while my HO alternator kept a 12.1 charge no matter what.... So, i am thinking about getting 2-3 yellowtops in the trunk, since i can get them for a great deal instead of the HO alternator. Would that help me while I am driving? I never use my sounds while they are off. I just want the facts because i keep hearing 2nd batteries will/wont help and I'm just confused.....if i add 2-3 yellowtops in the trunk, will they help with steady voltage or no?Do they benefit anything besides while the car being off? big3 has already been done in 1/0G! [/QUOTE]

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