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Thread: Use a heavy duty battery charger instead of running your car to update?

  1. #1
    FLAC mbkowns's Avatar
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    Lightbulb Use a heavy duty battery charger instead of running your car to update?

    I find myself spending sometime in the car messing with things and I think its a bad Idea to idle the car plus it wastes gas. I could always run a separate psu for ac current and run an extension cord but thats no good if I want to listen to music while i do it becuase of the amps.

    So I was at a stereo shop with some friends becuse he wanted speakers. I noticed they had the music up for testing a customers car and they had a heavy duty charger for the car. I am thinking of going that route becuase it was basicly a heavy duty hyper charger for the car.

    Something like these .. does anyone know of a good one / price ?

    http://www.sears.com/sr/javasr/produ...id=02871231000

    http://www.harborfreight.com/cpi/cta...emnumber=46944



    Seems like a good idea I have read some posts where people talk about using a switch to change between a ac psu and the dc one for the car but i think this would a better investment and is easy.


    let me know


    thanks
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    Super Moderator. If my typing sucks it's probably because I'm driving.... turbocad6's Avatar
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    I do that in my shop all the time..... just be carful not to overcharge the battery continously... just touch the side... if shes getting very warm give it a brake for a while by switching down from high to medium.....

  3. #3
    What can I say? I like serial. Curiosity's Avatar
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    This would work fine:
    http://www.sears.com/sr/javasr/produ...ers+%26+Cables
    You can leave it connected without any problems. I have a similar one that I just set to 2A and it stops when the battery is full. While the PC is on, it supplies power, then shuts off a few seconds after the PC goes off.

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    Super Moderator. If my typing sucks it's probably because I'm driving.... turbocad6's Avatar
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    if it's just pc, then that would do.... if your talking about amps & screens going & accessory turned on for a while, then a larger charger is more suitable... depends on the load.... also a bigger charger can always be turned down, but a small one can't be turned up....

  5. #5
    FLAC mbkowns's Avatar
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    http://www.sears.com/sr/javasr/produ...id=02871230000

    Let me know if this one is too small if so should I go with the $164.00 one?
    2005 Ford Mustang GT <- - - UPDATED PICTURES

    2003 KAWASAKI Z1000 - CUSTOM MODZ

    MBK (AIM = IllMBKllI)

  6. #6
    What can I say? I like serial. Curiosity's Avatar
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    Whoa! Using a 200A manual charger to run a car PC for possibly several hours? Do you have full coverage? Seriously, that's way too much if you were to forget it once or even while running the PC since it doesn't even have overcharge protection.

  7. #7
    lez
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    FLAC lez's Avatar
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    for uk readers Argos do a charger (Product ID 750/6150) that has auto off, it says in instructions lots of things not to use it for but I have been really abusing mine and its bullet proof.

    I have managed to blow the 20amp fuse on the front panel by trying to start the engine with it connected when the battery was _really_ flat, but just had to pop a new fuse in.

    If you extend the cables (12 not 240v) (and keep unit dry) then you could leave it on all night etc if you need to wireless upload big files to the HD etc, that was my plan.

  8. #8
    Stank Cheese n8scstm's Avatar
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    I had no battery in my car and would use one to run the radio while i worked on it but the problem was that the power was so dirty that it fried the radio. Dont need it anyways fortuneatly
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  9. #9
    cheap custom title JC-S60's Avatar
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    A charger can give you some nasty dirty power... When you have the battery still hooked, it will act as a cap a bit, but without you're going to fry sensitive electronics.

    Even with a bat hooked, I would be very carefull, and check your specific charger with a scope or something...

  10. #10
    What can I say? I like serial. Curiosity's Avatar
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    You wouldn't want to connect an alternator directly without a batt either. The charger I have I got from AutoZone (like the above one I linked) has less noise than the alternator on the lowest setting. The higher settings get worse, but I never need them. The 2A outputs around 4. There's a 12A rapid charge and a 75A jump start. You don't use the highest setting on these for charging and they are not automatic. The reason I use 2A is because of the low noise and it just keeps the batt charged while the PC, LCD, amps all fluctuate between 3 and 9A. Usually 3-4 with nothing going on, so the batt and cables barely get warm.

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