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Reload Thread: Big 3 upgrade did squat. Deep cycle or 'normal' battery?

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    Big 3 upgrade did squat. Deep cycle or 'normal' battery?

    Okay so, I recently did the 'big 3' upgrade, and it helped.... barely.

    It's not that HUGE of an issue if I'm going over 15mph, but at idle... its hilariously bad. I'm trying to be able to play my system at full power with little to no voltage drop at idle. That is my goal

    right now, the system is less that 600 watts and the voltage meter smacks 8 after every bass hit. I will soon be pushing more than 2.5k watts.... and I obviously need to beef up the electrical haha.

    I am contemplating purchasing a second battery, and using it only to power the amp. If I do this,

    can I hook BOTH of the batteries up to my single alternator?
    can I ground both of the batteries to the same 'ground spots'?
    Should I get a deep cycle battery, or a 'normal' battery?
    ^If I get a deep cycle battery, can I hook that to the alternator?


    Thank you!
    Looking to spend less than $200 for the battery.



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    Re: Big 3 upgrade did squat. Deep cycle or 'normal' battery?

    What truck ? If your big 3 isn't installed properly with good grounds. This will happen. Also what amp? Some are very power hungry . And last what size alt and are you using the stock battery ?




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    Re: Big 3 upgrade did squat. Deep cycle or 'normal' battery?

    If 600 watts is dropping you to 8 you will need more than a bat for 2.5k. Don't let your stuff drop that low it could damage your equipment and your truck



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    Re: Big 3 upgrade did squat. Deep cycle or 'normal' battery?

    Quote Originally Posted by Silverado SS View Post
    If 600 watts is dropping you to 8 you will need more than a bat for 2.5k. Don't let your stuff drop that low it could damage your equipment and your truck
    What else are you talking about? a new alt?

    And I got the alt tested, its stable at like... 13.75 volts or something


    Quote Originally Posted by mylows10 View Post
    What truck ? If your big 3 isn't installed properly with good grounds. This will happen. Also what amp? Some are very power hungry . And last what size alt and are you using the stock battery ?

    Tried to respond earlier, but apparently the one post I made 5 mins ago has to be approved by a mod? Lol what.
    Anyways, Its a 96 dakota. I went from 10awg to 2awg and used new 'crimps' or whatever they are called. And I cleaned the connecting spots with a wire brush and cleared away any debris. Its a stock alt... guessing 90 amps? and the battery says 24-DL and 110 reserve. I think it was only a "better" rating from autozone lol

    Oh, and the amp is a LA-4200 bridged. And in the future, it will be the LA-4200 and an SAZ-1500



    Current: 240amp Mechman Alt, Yellowtop in the back, Two SA-6.5s and two tweets in each door powered by an LA-4200, Two Sundown SA-12s in a prefab powered by an SAZ-1500.

    http://www.stevemeadedesigns.com/board/topic/178898-vehicle-dodge-dakota-1996/
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    Re: Big 3 upgrade did squat. Deep cycle or 'normal' battery?

    Quote Originally Posted by WhatsAminiTruck View Post
    What else are you talking about? a new alt?

    And I got the alt tested, its stable at like... 13.75 volts or something
    You will most definitely need a new alternator. Stable voltage means nothing if it can only produce 90A.

    Also, when you did your Big 3, did you remove the OEM wires or add on top of them?




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    Re: Big 3 upgrade did squat. Deep cycle or 'normal' battery?

    Quote Originally Posted by bubbagumper6 View Post
    You will most definitely need a new alternator. Stable voltage means nothing if it can only produce 90A.

    Also, when you did your Big 3, did you remove the OEM wires or add on top of them?
    2 days ago and OEM wires? Do you mean the stock ones? Yea, those are gone.
    Could I use a 120 amp alt...? or will I need a HO one



    Current: 240amp Mechman Alt, Yellowtop in the back, Two SA-6.5s and two tweets in each door powered by an LA-4200, Two Sundown SA-12s in a prefab powered by an SAZ-1500.

    http://www.stevemeadedesigns.com/board/topic/178898-vehicle-dodge-dakota-1996/
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    Re: Big 3 upgrade did squat. Deep cycle or 'normal' battery?

    Quote Originally Posted by WhatsAminiTruck View Post
    2 days ago and OEM wires? Do you mean the stock ones? Yea, those are gone.
    Could I use a 120 amp alt...? or will I need a HO one
    You should not have removed the OEM (stock) wires.

    At 2.5kw I would recommend an HO alt, even 120A won't be able to keep up and you'll will damage the alternator. Especially if your goal is no drop at full tilt at idle.




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    Re: Big 3 upgrade did squat. Deep cycle or 'normal' battery?

    Quote Originally Posted by bubbagumper6 View Post
    You should not have removed the OEM (stock) wires.

    At 2.5kw I would recommend an HO alt, even 120A won't be able to keep up and you'll will damage the alternator. Especially if your goal is no drop at full tilt at idle.
    Poopy... okay. And why not? @removing the 10awg wires

    and for the quick fix now.... for the 600watt system, what battery setup...?



    Current: 240amp Mechman Alt, Yellowtop in the back, Two SA-6.5s and two tweets in each door powered by an LA-4200, Two Sundown SA-12s in a prefab powered by an SAZ-1500.

    http://www.stevemeadedesigns.com/board/topic/178898-vehicle-dodge-dakota-1996/
    ^my ride


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    Re: Big 3 upgrade did squat. Deep cycle or 'normal' battery?

    You'll need at least a 200 amp alt. put the stock wires back if you can thetes your main problem. Never remove just add




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    Re: Big 3 upgrade did squat. Deep cycle or 'normal' battery?

    If his vehicle doesn't "look" at the resistance of the factory ground wires he removed it won't do any harm to remove them. It can't hurt to put them back on for troubleshooting.




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    Re: Big 3 upgrade did squat. Deep cycle or 'normal' battery?

    Quote Originally Posted by WhatsAminiTruck View Post
    Poopy... okay. And why not? @removing the 10awg wires

    and for the quick fix now.... for the 600watt system, what battery setup...?
    I've found that occasionally the OEM wires will feed other things aside from what you'd expect. Although if you removed them I imagine you would have noticed if you had to disconnect them from something besides the battery/alt/chassis. But in any case, electrical current will divide itself between the old and the new, obviously the new being larger will handle the majority but the old will still carry some (i.e. you'll see a slight benefit) but it will never hurt. This is why we always recommend the OEM wires be left alone.

    As a general rule of thumb I recommend 100A of alt power for every 1kw of amp power. Obviously this has it's limitations especially when you get into higher power systems but it works pretty well for <3kw.

    At only 600w there's no reason your stock electrical shouldn't be able to keep up unless you already have a failing electrical component.
    Last edited by bubbagumper6; 10-20-2013 at 10:47 AM.




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    Re: Big 3 upgrade did squat. Deep cycle or 'normal' battery?

    If you're dropping to 8V running less than 1k, you've got a combination of existing problems. Battery is crap, you need more charging supply, you may need better connections. Where and with what are you measuring voltage?

    Quote Originally Posted by bubbagumper6 View Post
    The I've found that occasionally the OEM wires will feed other things aside from what you'd expect. Although if you removed them I imagine you would have noticed if you had to disconnect them from something besides the battery/alt/chassis. But in any case, electrical current will divide itself between the old and the new, obviously the new being larger will handle the majority but the old will still carry some (i.e. you'll see a slight benefit) but it will never hurt. This is why we always recommend the OEM wires be left alone.

    As a general rule of thumb I recommend 100A of alt power for every 1kw of amp power. Obviously this has it's limitations especially when you get into higher power systems but it works pretty well for <3kw.

    At only 600w there's no reason your stock electrical shouldn't be able to keep up unless you already have a failing electrical component.
    This whole post, but the bold especially.



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    Re: Big 3 upgrade did squat. Deep cycle or 'normal' battery?

    600 watts droping the voltage down to 8v?? Crap....

    DBL check your amp power and ground connections....and where exactly is your voltage meter wired at? ie. amp, batt terminals...ect.

    What are your gains set at? Even maxed and clipping the HELL out of that amp, I still do not see getting down to 8v with that power.

    Let me ask, is this voltage drop with the head lamps, a/c, and what not on as well?
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    Re: Big 3 upgrade did squat. Deep cycle or 'normal' battery?

    I will also use 0 gauge ofc power wire and a better output alternator to help more.



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    Re: Big 3 upgrade did squat. Deep cycle or 'normal' battery?

    Quote Originally Posted by WhatsAminiTruck View Post
    Okay so, I recently did the 'big 3' upgrade, and it helped.... barely.

    It's not that HUGE of an issue if I'm going over 15mph, but at idle... its hilariously bad. I'm trying to be able to play my system at full power with little to no voltage drop at idle. That is my goal

    right now, the system is less that 600 watts and the voltage meter smacks 8 after every bass hit. I will soon be pushing more than 2.5k watts.... and I obviously need to beef up the electrical haha.

    I am contemplating purchasing a second battery, and using it only to power the amp. If I do this,

    can I hook BOTH of the batteries up to my single alternator?
    can I ground both of the batteries to the same 'ground spots'?
    Should I get a deep cycle battery, or a 'normal' battery?
    ^If I get a deep cycle battery, can I hook that to the alternator?


    Thank you!
    Looking to spend less than $200 for the battery.
    Honesty bro in my experience batts are really only my suggestion if the voltage drop is fairly minimal. If you have a real volgate problem i would double check the quality of the big 3 install, mainly check to make sure your ground can not be any better at a different location and that where your ground is has been cleaned of all paint ect ect. Past that i would bypass the battery for now, save up your money you would have spent on that and look at upgrading your alternator. If you have a real voltage problem a battery will not fix it. Only more current will fix your problem, aka an alternator. If you're on a tight budget i would take your car to a starter and alternator shop in your town and see how much more they could upgrade it to instead of buying a brand new one. It'll be about 1/3 to 1/2 the price of a H/O alt.

    Also, if you already know you're upgrading to 2.5k in the future you will need an upgraded alternator and maybe even an aux alt anyways. Good luck, if you need any more advice on this feel free to pm me.




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