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Thread: Dual Battery Setup - How Many Actually Use it?

  1. #1
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    Question Dual Battery Setup - How Many Actually Use it?

    Hey guys/gals,
    I'm new here to the forums, i've been browsing around for some time, but i thought it was time to join. i have been really impressed with some of the installs here at the site, and i want to do basically the same thing to my 2000 Ranger...

    my question is :
    how many people actually have two vehicle batteries installed in their vehicles, with one solely to power their carputer? i think it would be pretty difficult to install a new battery, but i really dont know anything about that kind of stuff.
    my options for power are:
    1) have a second battery just to power the carputer, with a big inverter.
    or
    2) use the battery i already have with an inverter. of course i would put the carputer on hibernate when i get out, so it wouldnt drain any power, but i want to know the risk of that..


    Thanks.

  2. #2
    Low Bitrate Pepe's Avatar
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    Quote Originally Posted by andybrown
    Hey guys/gals,
    I'm new here to the forums, i've been browsing around for some time, but i thought it was time to join. i have been really impressed with some of the installs here at the site, and i want to do basically the same thing to my 2000 Ranger...

    my question is :
    how many people actually have two vehicle batteries installed in their vehicles, with one solely to power their carputer? i think it would be pretty difficult to install a new battery, but i really dont know anything about that kind of stuff.
    my options for power are:
    1) have a second battery just to power the carputer, with a big inverter.
    or
    2) use the battery i already have with an inverter. of course i would put the carputer on hibernate when i get out, so it wouldnt drain any power, but i want to know the risk of that..


    Thanks.
    I started out powering my truckputer with an inverter just like you, and just using the stock battery. The only real downfall of that setup is that you have to manually put your computer into shutdown or hiberation mode, and manually flip the switch to turn it on. There isn't any risk with this setup, as the inverter completely cuts the power to the computer, it won't drain the battery.

    There are circuits on the forum that show how you can setup an inverter to automatically turn on and off with the trucks ignition using relays, but you will still have to manually send the computer into hibernation before turning off your truck.

    I love the computer in my ranger, and it's good to see there are a few of us ranger owners on here!

    99 Ford Ranger - Bagged and laying frame

    Current Carputer project:
    Done:
    Custom mounted 7" LCD w/ TSK in radio bezel
    Custom center console for relocated headunit
    Via Epia M10000
    GPS
    MP3
    OPUS PSU
    DVD

  3. #3
    Constant Bitrate Willy-Mach1's Avatar
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    from what I've read it is not hard to install a second battery. But my suggestion, from experience, is to stay away from the inverter if you can. I know that there are lots of people here that love their inverter setups but I truly recommend against it. I started with an inverter, mostly because of cost, plus I already had an extra AC ATX PSU lying around the house so it made some sense. Boy was I wrong...the inverter just gave me problems, noise in the sound, messed up the shutdown controller (also because of noise), honestly it was a PITA. If your setup does not require a lot of power I would suggest the Opus PSU, a lot of people seem to be happy with it. If you need some more power I recommend the Keypower 250W dc-dc PSU and a shutdown controller (there are several around, I use zoot-jeff's uSDC), that is what I have and the difference is amazing. Plus, if you go dc-dc it's one less thing to wire and find a place for . Just my 2 cents, it all depends on your needs and how you want to set things up, I just hope this information helps you make a more educated decision

    CHEERS!!
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  4. #4
    FLAC sdashiki's Avatar
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    Just from car audio xp, i know a 2nd battery is easy to install. Buying the correct parts can be a challenge...I suggest Optima yellow tops, and searching the forums for a good isolator. In the long run, if you got the $, buy one and you wont ever have to worry about a dead battery or dimming lights...
    (0.0%-) starting over
    iPad 3G 64GB, RF 600.5 amp, JL10W0V2, 8 Infinity Components

  5. #5
    Maximum Bitrate albysure's Avatar
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    i have been using a second battery for my audio system for a long time now and i think its the way to go. your car will always start because of the diodes in the isolator that prevent one battery from drawing off the other.

  6. #6
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    sorry i've been away for a while. im going to be using a laptop computer is the only thing. so a power supply is out of the question, isnt it?

  7. #7
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    Bugbyte's Avatar
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    Why do you need a second battery if you have a laptop? Just plug it in to the inverter and use the laptop battery as your "tank".
    Quote Originally Posted by ghettocruzer View Post
    I was gung ho on building a PC [until] just recently. However, between my new phone having internet and GPS and all...and this kit...Im starting to have trouble justfiying it haha.
    Want to:
    -Find out about the new iBug iPad install?
    -Find out about carPC's in just 5 minutes? View the Car PC 101 video

  8. #8
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    yeah, i guess that would work. i looked back and now that i did, i realize what i had done, when i first posted this thread i was going to build a small desktop to put into my truck, but then it turns out i decided my little 12" laptop would do. at first i decided not to use it because of the temps that it sometimes gets to but i bought a cooling pad for it and it seems to be doing alot better..

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