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Reload Thread: Im looking for a Farad Capacitor any suggestions

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    rookanga's Avatar
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    Im looking for a Farad Capacitor any suggestions

    ok, first I know Farad Capacitor are bad, I would like to run all alternators and batteries, but the vehicle aint mine (I just borrowing it until I can get a new car) and I dont want the lights to dime on it. I have a US Amps Class D Merlin M2D2 Amplifier, 1500 watts, if that helps, but I am looking for a farad capacitor that is powerful, that will will last long, and will do what it is suppose to do, not just last for a couple of days and decide to crap out. If anyone is familiar with farad capacitors, could you guys give me a suggestion on what to get and what not to get

    Oh and also would it be better to get a higher capacitor (like a 5 over a 4) instead of a lower one, will it hold more juice or is it for something else







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    Re: Im looking for a Farad Capacitor any suggestions

    Buy a decent battery instead. Doesn't matter if the car is yours or not...



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    Re: Im looking for a Farad Capacitor any suggestions

    Quote Originally Posted by misfit138 View Post
    Buy a decent battery instead. Doesn't matter if the car is yours or not...
    yeah but the thing is it does have a new battery in it, I just heard caps are used for like a 30 sec extra battery thing, and when the bass aint hitting it is recharging or was I thinking about something different




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    Re: Im looking for a Farad Capacitor any suggestions

    if there were ever a time for a facepalm, this is it.




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    Re: Im looking for a Farad Capacitor any suggestions

    Quote Originally Posted by misfit138 View Post
    Buy a decent battery instead. Doesn't matter if the car is yours or not...
    this
    Quote Originally Posted by rookanga View Post
    yeah but the thing is it does have a new battery in it, I just heard caps are used for like a 30 sec extra battery thing, and when the bass aint hitting it is recharging or was I thinking about something different
    a battery does the same thing but has a much larger reserve than a cap dollar for dollar.
    and the farads are the amount it stores. so larger is more if you insist on getting a cap....



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    Re: Im looking for a Farad Capacitor any suggestions

    Quote Originally Posted by marcotheclepto View Post
    this


    a battery does the same thing but has a much larger reserve than a cap dollar for dollar.
    and the farads are the amount it stores. so larger is more if you insist on getting a cap....
    They don't really do the same thing at all... but that is beside the point.




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    Re: Im looking for a Farad Capacitor any suggestions

    Quote Originally Posted by rookanga View Post
    yeah but the thing is it does have a new battery in it, I just heard caps are used for like a 30 sec extra battery thing, and when the bass aint hitting it is recharging or was I thinking about something different
    Try an ADDITIONAL battery in the trunk.


    Energy(Joules) = Power(Watts) x Time(Seconds). The energy in a 1Farad capacitor = 0.5CV.V = 0.5x1x12x12= 72 Joules

    The energy stored in a 1 farrad capacitor would power your amp at about 50 watts for under a second. An electrolytic capacitor IS NOT a battery.




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    Re: Im looking for a Farad Capacitor any suggestions

    but wouldnt a stock alternator have a very difficult time trying to keep charge for 2 batteries instead of one, and wouldnt it ruin both batteries at the same time




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    Re: Im looking for a Farad Capacitor any suggestions

    Quote Originally Posted by rookanga View Post
    but wouldnt a stock alternator have a very difficult time trying to keep charge for 2 batteries instead of one, and wouldnt it ruin both batteries at the same time
    don't try to argue it, just do the battery and stop looking for a cap, that's my suggestion.



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    Re: Im looking for a Farad Capacitor any suggestions

    will I have to drill threw the firewall of the vechile (I think thats what it called), to hook up a second battery?




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    Re: Im looking for a Farad Capacitor any suggestions

    Quote Originally Posted by rookanga View Post
    will I have to drill threw the firewall of the vechile (I think thats what it called), to hook up a second battery?
    Yup....unless there's an extra hole somewhere that's big enough to pass power wire through.



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    Re: Im looking for a Farad Capacitor any suggestions

    Quote Originally Posted by rookanga View Post
    will I have to drill threw the firewall of the vechile (I think thats what it called), to hook up a second battery?
    probably but who knows.. :/ ugh.



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    Re: Im looking for a Farad Capacitor any suggestions

    just sounds like an all around bad idea.



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    Re: Im looking for a Farad Capacitor any suggestions

    Quote Originally Posted by rookanga View Post
    but wouldnt a stock alternator have a very difficult time trying to keep charge for 2 batteries instead of one, and wouldnt it ruin both batteries at the same time
    it depends on what your stock alt puts out.

    its its 100-120a or more you should be fine.




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    Re: Im looking for a Farad Capacitor any suggestions

    Quote Originally Posted by rookanga View Post
    will I have to drill threw the firewall of the vechile (I think thats what it called), to hook up a second battery?
    How did you intend to run power to your amp? Hopefully by running some heavy guage wire through the firewall right?

    How much strain you put on your alternator is entirely dependent on your listening habits. With normal music I've run quite a bit of power off of stock alternator and 1 additional battery with fine results in many installs over the last 15 years.

    As far as charging 2 batteries, yeah it's optimum to have a high output alternator, but the fact remains a battery will power your amp for hours at 50 watts and a capacitor will power it for half a second.

    There's a reason all the big show cars have banks of batteries and not banks of capacitors.




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