Battery upgrade question

[R05Nismo 10+ year member]

I have a PG ti600.2 and 500.4 in my truck (class A/B amps). Total power is right around 900rms. Put the biggest Interstate they make for it under the hood. (reverse post or I would have got something else) Made a grounding kit and installed it which helped with the dimming but its still there.

I want to add a battery in the cab somewhere and was looking at the Kinetik HC600 or HC800. Would either of these cause more of a load on my alternator?

It's a 110amp if that helps. Also, I have Streetwires 4 gauge main power which does not look to be copper with a 100amp fuse to a distribution block then 4 gauge to each amp along with 4 gauge ground also to each. Would the upgrade to 1/0 gauge main power help also?

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[audiolife 5,000+ posts]

I heard that adding more batteries to my car will lower the voltage and is harder on my alternator, is this true?

Adding multiple Kinetik Power Cells to a vehicle will not add extra load on your alternator or lower you voltage in your car like adding ‘wet cell’ batteries will. Due to the low ESR and high voltage of Kinetik Power Cells, your voltage will actually increase. Kinetik Power Cells also charge more efficiently and quickly than a standard ‘wet cell’ battery reducing the stress on your alternator.

http://www.kinetikaudio.com/faq.asp

 

[R05Nismo 10+ year member]

Ok, thanks. I should have looked more into that on there site.

 

[jrwalte 10+ year member]

Adding more batteries will not stop the dimming, unless there is a battery at 14 volts. Only upgrading the alt or possibly a cap will stop it. The dimming occurs because your alt cannot provide the power and your electrical system drops to the 12 volts the battery supplies. Hence a dim in your lights when your car goes from 14 to 12 volts.

 

[R05Nismo 10+ year member]

Adding more batteries will not stop the dimming, unless there is a battery at 14 volts. Only upgrading the alt or possibly a cap will stop it. The dimming occurs because your alt cannot provide the power and your electrical system drops to the 12 volts the battery supplies. Hence a dim in your lights when your car goes from 14 to 12 volts.

I'm only dropping .6 of a volt with music at full volume. The most I could get it to drop is 1 full volt with a 45 hertz test tone. I've done enough research to know a cap is just a band aid. Doing the grounding kit under the hood did help matters but i'm still getting some slight dimming.

 

[R05Nismo 10+ year member]

The only place I can fit an extra battery is the HC600 in my center console.

Would that be an unsafe place to have a battery in the cab?