View Poll Results: How many Batteries do you have in the car?

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    18 90.00%
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Thread: Second Battery

  1. #1
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    Second Battery

    I searched but didnt see anything on this, so i figure i should ask.
    Having a carputer in a car, is it a good idea to add a second battery and an alternator??

    How many batteries are you running off of?

  2. #2
    FLAC greatwhite's Avatar
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    Well, two batteries for a pc is not really nessesary if that's all you're running. A second alt is way out there!

    Now, if you're running a couple thousanwat amps, multiple monitors, dvd players, xbox, etc, etc, all at once- a second battery is needed.

    But for just a couple mid grade amps and a PC, one is fine.

    There are other reasons though, for example:
    Second battery to power just the pc allows it to survive cranking (or a tank circuit can be used),
    longer run times with the engine off,

    and similar uses.....

    My stock electrical system runs my P4 and two mid grade amps just fine, no issues (I've done the "Big Three" though)

    Cheers

    BJ

  3. #3
    FLAC XC-C30's Avatar
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    Quote Originally Posted by greatwhite View Post
    Well, two batteries for a pc is not really nessesary if that's all you're running. A second alt is way out there!

    Now, if you're running a couple thousanwat amps, multiple monitors, dvd players, xbox, etc, etc, all at once- a second battery is needed.

    But for just a couple mid grade amps and a PC, one is fine.

    There are other reasons though, for example:
    Second battery to power just the pc allows it to survive cranking (or a tank circuit can be used),
    longer run times with the engine off,

    and similar uses.....

    My stock electrical system runs my P4 and two mid grade amps just fine, no issues (I've done the "Big Three" though)

    Cheers

    BJ
    Sorry man but that's BS.... It all depends on how big your stock alt and batt are....
    Xenia & Isabelle, totally in love!

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  4. #4
    FLAC greatwhite's Avatar
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    More like it's a combination of your stock system and what you're running.
    If you're sitting in the rain with the wipers going, aircond on and lights burning, the stock system is marginal at best. Otherwise, it will serve most (I said MOST) users needs.

    That's not "BS", as you say. The stock system will seve most users just fine on a day to day basis. For a pc system and a mid grade amp, it's adequate. Do the big three and it's just fine. Throw in too many power sucking goodies though, and the story changes ......

    Cheers

    BJ

  5. #5
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    i installed the pc in 2006 Accord. I kept the stock and runing the sound through the AuX port, so stereo is on when i have the computer on.
    Im running Athlon XP 1600+, Lilliput 7", wifi, gps, gamepad, media reader, bluetooth, mini keyboard, planning on USB audio, and havent installed my Win TV card in it yet..
    I am planning on adding an amp for the car system.

  6. #6
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    Quote Originally Posted by Zeeshan0581 View Post
    havent installed my Win TV card in it yet..
    I wouldn't bother with a tv card. When the FCC switches over to HD-TV in 2009 they are re-assigning the VHF and UHF spectrum. Basically all tv will have to be HD and come off of a dish or through a cable line. I wouldn't spend the money if the component will be obsolete in 2 years.

  7. #7
    Maximum Bitrate Ruffy's Avatar
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    4 batteries but 3 are alarm batteries

    so only 1 optima redtop for my car + setup.

    More batteries isnt the proper solution 90% of the time. It equates to longer runtime when the car is off, isolated circuits, or larger voltage/power potential. Thats it.

    You add more batteries to run your equip for a long time without the alternator charging. But if your Alternator can't charge the extra batteries and the main battery efficiently then it will all go to hell quickly.

    If you wanted to say prevent lights from dimming when your system is on then a battery wont help unless you put things on seperate circuits, AND have the capability to charge both batteries.

    If your alternator cant handle charging both batteries and powering your system then it will do more harm then good. When the car is On and running its your alternator providing power for everything. Not the battery.
    Car : 00' Chrysler 300M
    Speakers : Rainbow Audio SLC 265 | Subs : Diamond Audio D6 12" Subs X2
    Amp's : Hifonics ZXi 6006 AB | Hifonics BXi 1606 D
    CarPC: HP Laptop AMD Sempron 3000+ | 1.5GB RAM | DVD+RW | 80GB 5400RPM HD | ATI R200 Video

  8. #8
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    Quote Originally Posted by Ruffy View Post
    4 batteries but 3 are alarm batteries.
    You wouldn't mind explaining why you need 3 batteries for your alarm would you?

  9. #9
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    Quote Originally Posted by gunsandrosses View Post
    I wouldn't bother with a tv card. When the FCC switches over to HD-TV in 2009 they are re-assigning the VHF and UHF spectrum. Basically all tv will have to be HD and come off of a dish or through a cable line. I wouldn't spend the money if the component will be obsolete in 2 years.
    dam that sucks, i already have bought the card, so i guess i am better off putting it in and use it while it lasts.

  10. #10
    FLAC greatwhite's Avatar
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    If it's a TV/fm card, you can probably use it for fm if nothing else.....

    Cheers
    For once you have tasted flight you will walk the earth with your eyes turned skywards, for there you have been and there you will long to return.
    Leonardo Da Vinci

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