Battery confusion and comparison

[Simply420]

Hi all, nice forum yall got here!

Anyway, just a couple questions if anyone can help me out. I have a '99 Camry with a standard alternator, battery, and charging system. Big 3 upgrade too.

My question concerns my new setup, which is 2 12' Kickers at 1200w. The headlight dimming is real and even the dash lights too. So after doing research about a 2nd AGM battery for the trunk, I thought that would be a great idea. After looking at brands like XS Power, Stinger, and Kinetic, I noticed something right away. They look like standard SLA (Sealed Lead Acid) batteries but are advertised in terms of watts the system is, and how much it can "handle".

So I work at a batteries store up in Minnesota and I get awesome discounts there. My question is, what is the main difference between these car audio batteries and regular AGM SLAs? Let's take the following as an example:

SHURiKEN SK-BT45

-12v obviosly

-45Ah

-1250W system rating

Duracell DURA12-44C/FR

-12v

-46Ah

-Not rated for wattage.

How similar are these two? They are very similar in terms of group size and Ah rating. Any info is greatly appreciated, thanks!

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[10k-watts]

Just upgrade your alt and that'll take care of that...u aren't running enough power that u need anther battery

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[10k-watts]

The top brand batteries advertise the power because that's what we're looking to support...they're agm batteries and though u can get away with a cheaper battery like Duracell... or autozone agm batteries...i get what u pay for...xs... northstar... etc... are worth the money... but again... just upgrade your alt...i upgraded the alt and the battery under hood... problem solved

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[Simply420]

I see what you're saying. I did some looking and it turns out the stock alternator for my car is about 90 amps. What should I aim for in amps if I do upgrade?

 

[BOOMINGRANDPA 5,000+ posts]

I see what you're saying. I did some looking and it turns out the stock alternator for my car is about 90 amps. What should I aim for in amps if I do upgrade?

my granprix has 125a alt and i just got a agm starting batt running 930 rms (actual) no prolems i'm sure i could run it at 1 ohm 1160rms no problem.. do u have agm starting batt? if not get one before upgrading alt that and big 3 may help mine is just advance battery.. also some times peeps just have gain to high on amp or over drive hu, don't turn hu past 80% max, don't use bass boost or eq on hu & make sure amp gain under 1/2 way (depend on hu voltage but normally below 1/2 is better than over) ..

 

[Boomin_tahoe 5,000+ posts]

I see what you're saying. I did some looking and it turns out the stock alternator for my car is about 90 amps. What should I aim for in amps if I do upgrade?

150-200

What size wiring did you use for the big 3?

 

[10k-watts]

So u think you'll upgrade your system in future... if so... go big and not worry about upgrading in future with 300a or more... if not...220-240a alt with 1/0 wire and 1/0 big 3 upgrade

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