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Thread: Drain the battery?

  1. #1
    Newbie agashka's Avatar
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    Drain the battery?

    Hello. Currently im 15 but im turning 16 soon. I might get my dad van, if so its for sure i'm setting up a computer in that. I figured out a cheap pc. It have a 220w power supply.I'm Also thinking about a 19" LCD Monitor. One thing... How do i wire all these? With a Power Inverter? Like this one?
    http://cgi.ebay.ca/Tracker-500-Watt-...ayphotohosting
    Another thing. How much watts do i need? and wont this thing kill the van's battery? I was watching Pimp my ride, that guy who got some 3 xbox and 8 screens, bigs subs... aint this killing battery?

  2. #2
    Maximum Bitrate psyrex's Avatar
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    Welcome to the forums. Please use the search and read through the FAQs as all the questions you've posed have been answered and in detail, too. It'll also give you other ideas to think about.
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    ...it never ends

  3. #3
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    yea, that would work but putting a full desktop pc in a vehicle may lead to damage from vibration and bumps. The battery wont die because the alternator is what supplies power to the vehicle while the vehicle is running and rpms are at least 700-800rpm.

    Now, if the vehicle is off and you are running anything electrical, that will drain the battery but it just wont die immediately. Get a DMM, multimeter, and attach it on the battery leads. I have a smart chipped distro block running on my power line for my amps with a voltage readout and it is 0.3v too high so close enough and i have mine shut off when the voltage dips below 11.5v. your highest voltage level for stock batts should be 12.2-12.6 given 12.6 for brand new or highly maintained. This is for Lead acid batteries.

    That inverter will be fine because even though u have a 220w PSU, it dont draw that much. You should get that inverter to be honest. The larger the inverter, the less stress is has to work to convert. As long as it's RMs rating meets ur max pc output rating, your perfectly fine in terms of power requirements.

  4. #4
    Neither darque nor pervert DarquePervert's Avatar
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    agashka you should start reading here: New to CarPCs? Don't know where to start?
    A 19" monitor is freakin' huge for a vehicle installation. I can't afford the in-dash monitor I want and am using a 15" LCD and it's freakin' huge.
    If you have the space, there's no reason why it wouldn't work, certainly. Finding a place to mount that sucker is going to be difficult, at best.

    yea, that would work but putting a full desktop pc in a vehicle may lead to damage from vibration and bumps. The battery wont die because the alternator is what supplies power to the vehicle while the vehicle is running and rpms are at least 700-800rpm.
    Bull****.
    The only reason not to use a full-sized desktop PC is the size. Vibration and bumps can affect any PC regardless of formfactor, however the components are sturdier than you might imagine.


    Now, if the vehicle is off and you are running anything electrical, that will drain the battery but it just wont die immediately. Get a DMM, multimeter, and attach it on the battery leads. I have a smart chipped distro block running on my power line for my amps with a voltage readout and it is 0.3v too high so close enough and i have mine shut off when the voltage dips below 11.5v. your highest voltage level for stock batts should be 12.2-12.6 given 12.6 for brand new or highly maintained. This is for Lead acid batteries.
    Again, this is incorrect.
    A fully charged battery should put out around 14v at idle, depending on the load at the time. My 3 year old OEM battery in my Tacoma puts out a rock-solid 13.8v.


    That inverter will be fine because even though u have a 220w PSU, it dont draw that much. You should get that inverter to be honest. The larger the inverter, the less stress is has to work to convert. As long as it's RMs rating meets ur max pc output rating, your perfectly fine in terms of power requirements.
    More misinformation. The general rule of thumb for an inverter is to use one rated 1.5 - 2 times the expected draw.
    For a PC in a vehicle, though, an inverter is the inefficient way to go. I'll let you do your own readin in the FAQs to learn why.
    Have you looked in the FAQ yet?
    How about the Wiki?



    Under normal circumstances, a signature would go here.

  5. #5
    Newbie agashka's Avatar
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    Thanks guy, im gonna look around. The thing is thats a van. a old van with nothing at the rear, no seat. So i could put a couch one side and a monitor the other. The pc? i thinked about , under the couch, make a wodden box , everything will be in it, make sure it doesnt move, make something solid. and the size? im using a matx motherbord loaded with a cheap cpu and anyway, there enought place under the couch.

    For now im interested to get a MSNTV2 , if i can find the hacking tutorial for it. I would load it with a 2GB CF2 card, so thats not a problem for vibration, make myself a custom case.But im still unesure.

  6. #6
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    u misunderstood almost everything i typed.

    When i am referring to running a battery with the vehicle off, u are referring to running the vehicle with it on, that's a completely different scenario.

    the Voltage regulator will or should kick it to a nominal 13.8v and full out at 14.4 as long as their is no stress which would lower the voltage.

    Car on and off is 2 different scenarios!
    I am referring to it off.

    "More misinformation. The general rule of thumb for an inverter is to use one rated 1.5 - 2 times the expected draw"

    That is what he is usin?? 500w inverter for a 220w PSU.

    That rule of thumb is also for noobs without testing tools to be honest.

    A 220 PSU wont output 220w or more all the time or else it wouldnt last long.

    As long as the inverter can handle at least a continuous rating of the MAX output of the PSU, thats perfectly fine. Because if the PSU has lasted a long time.... The PSU is larger than the power requirements. The efficiency for PSUs is around 60-70% on average but that's taken into account when rating PSUs as well. That's too technical info for what's discussed here.

    I'm not tryin to start a apples vs oranges debate but i have been into the car audio stereo competition scene for a few years, i dont hold any records and i never competed in a sanction because it's pointless to me but i setup and build systems and this is just like any other electrical setup especially since we are talkin about 12v systems as what most typical mobile setups are.

    I've got videos of my last setup and it's still installed, actually on myspace, hehe.(its free).

  7. #7
    Newbie agashka's Avatar
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    ouch. All those things are starting to confuse me

  8. #8
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    i dont mean for this to be confusing at all... OK, throw everything out that u have read by me and just take this-

    That inverter u chose will be fine, you can run the pc with the vehicle off but i would never recommend it because we all know once someone gets on a pc, time flies by, hehe, and you may lose track of time... You can use a pc for over an hour with the vehicle off, or at least your setup you can. I would just still not recommend running with car off unless you just absolutely have to, get a 2nd battery but that would only be necessary if u had to run the pc with the vehicle off...one reason would be for video surveillance.

  9. #9
    Newbie agashka's Avatar
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    hum, yeah a second battery would be great, but how to recharge it? oh and , the car battery... it does recharge by itself? so if i spend 1h on the pc, then the battery is almost off, go get a ride , it will recharge?

  10. #10
    FLAC FC3S's Avatar
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    you tie the 2nd battery into the first one, better with an isolator

    then as you drive, yes both batteries would charge

    1h? depends how much u've drained the battery

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