hookin up a 2nd battery this way..pros and cons anyone?

[95Prober 10+ year member]

Constantly draining your battery to complete depletion is a sure way to kill the battery all together.
Why exactly can't you wire it up to the original? Adding a 2nd batt does not always create the need for a HO Alternator... there are several other factors that come into play.

so adding/wiring a second battery to the engine battery together (of similar types, gel cell) wouldnt hurt my stock alternator if i was pushing the amps on average?

 

[tommyk90 5,000+ posts]

so adding/wiring a second battery to the engine battery together (of similar types, gel cell) wouldnt hurt my stock alternator if i was pushing the amps on average?

no

 

[The12vBB 10+ year member]

so adding/wiring a second battery to the engine battery together (of similar types, gel cell) wouldnt hurt my stock alternator if i was pushing the amps on average?

It certainly is possible... if your running some heavy stuff.

But I've seen systems with 90a idle alts support 2000+ watt amps, with 5+ tvs, using 2 batteries, with 0 head light dim.

I'd highly recommend a deep cell. Kinetik or Optima.

 

[Qbenjamin 10+ year member]

If ur just gonna get a kinetik do it the other way around. Most stock batteries aren't sealed and leak fumes that can cause fires. Having that stock battery in the back is a horrible idea.....
U think having a registered SN on this forum for 3 years u would at least know some of the basics...

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And I get made fun of as an 07'er. Some people just come here and browse the classifieds obviously.

 

[Qbenjamin 10+ year member]

It certainly is possible... if your running some heavy stuff.
But I've seen systems with 90a idle alts support 2000+ watt amps, with 5+ tvs, using 2 batteries, with 0 head light dim.

I'd highly recommend a deep cell. Kinetik or Optima.

I have done the big 3 with 1/0 and I have a yellow top up front, and I STILL get voltage drops down to 11.9v. Some stock alts are just better than others.

 

[audiolife 5,000+ posts]

http://www.kinetikaudio.com/manuals/khccells.pdf page 8

i would not try to run just off a battery. like tommy said it could ruin the battery and amp.

 

[spoonraker 10+ year member]

So your stock charging system can't keep up with your electrical demand...so instead of using it you use....nothing? That makes perfect sense.

 

[PSturmer 10+ year member]

Very, very bad idea.
You'll end up killing that battery very quickly, and probably taking down your amps with it. Voltage dips would be KILLER after probably only 1 song full tilt, and the battery would need to be charged ALL THE TIME.

Just upgrade the battery up front to a smaller kinetik like the HC1400 or something similar in size, then do a bigger battery in back.

i like this idea. you could also not have a battery in the front and just run big ones in the back.

 

[95Prober 10+ year member]

i like this idea. you could also not have a battery in the front and just run big ones in the back.

i like this idea too. not touching a keypad when you have nothin constructive to say.

like i said guys, im not DOING it like this, it was called an "IDEA". if its bad than so be it. must be hard for some to comprehend that

 

[audiolife 5,000+ posts]

i have seen people run 16000+ watts with a stock alt and 9 total batteries. not saying i agree with it but it lasted over 2 years as a daily and longer had he not sold it...

 

[brchd]

If ur just gonna get a kinetik do it the other way around. Most stock batteries aren't sealed and leak fumes that can cause fires. Having that stock battery in the back is a horrible idea.....
U think having a registered SN on this forum for 3 years u would at least know some of the basics...

X2 on the 3 years...some ppl just don't get it....

 

[spoonraker 10+ year member]

i have seen people run 16000+ watts with a stock alt and 9 total batteries. not saying i agree with it but it lasted over 2 years as a daily and longer had he not sold it...

16,000W, 16KW? No way a stock alt could ever even come close to keeping up with that power demand. At that point you're basically running off of 100% battery power and even 9 batteries would drain relatively quickly with that much power. Obviously he didn't crank it for extended periods of time. Or only a very small amount of that power went to speakers other than subs, so they weren't constantly used... Basically he had to give the batteries a lot of time to charge between use otherwise I call BS.

 

[audiolife 5,000+ posts]

16,000W, 16KW? No way a stock alt could ever even come close to keeping up with that power demand. At that point you're basically running off of 100% battery power and even 9 batteries would drain relatively quickly with that much power. Obviously he didn't crank it for extended periods of time. Or only a very small amount of that power went to speakers other than subs, so they weren't constantly used... Basically he had to give the batteries a lot of time to charge between use otherwise I call BS.

totally not bs was a top 5 finisher at db drag world finals 2 straight years to boot. how much was it turned up? dunno but you could hear him for a few blocks heard it a couple times weekly for sure.

 

[spoonraker 10+ year member]

I have no doubt that it would work, I'm just saying if you turned it up a lot, it wouldn't last.

There is no physically possible way to not drain 9 batteries with 16kw with only a tiny little alternator trying to charge them...unless of course like I said you give the batteries a ton of time to charge between pushing the system hard.

 

[audiolife 5,000+ posts]

lol i doubt he cranked it while in it. he could do mid 50's (153-157 ish) but in that caravan half way up seemed to be about as loud as you could stand and drive it.