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  1. #1
    Join Date
    Feb 2003
    Location
    NH & Cebu
    Posts
    1,611
    I have a 400w inverter on my truck for a laptop and printer. It will handle the printer just fine, but if I plug in the laptop and either leave it off to charge, or turn it on, the inverter will squeal like a pig. This is even with the printer off. So, obviously I need a bigger inverter. What do you guys use? And do you use a "pure sine wave" inverter or not? Seen any good deals on them? Brands?

  2. #2
    Join Date
    Mar 2003
    Location
    Cincinnati
    Posts
    7,977
    400w isn't that big but should handle the laptop. How do you have it wired? I ran 10 gauge straight to the battery and have zero problems.

  3. #3
    Join Date
    Jun 2003
    Location
    Chicago, IL
    Posts
    4,322
    if you have it plugged into your cigarette lighter, thats your problem. the lighter outlet is only good for about 150 watts or less. you need to wire it to the battery directly. use #10, or preferrably #8 wire (if you plan to run it at maximum capacity for a while)

  4. #4
    Join Date
    Aug 2004
    Location
    Tucson, Az
    Posts
    337
    I've got a small inverter (might be 400w max) in my truck for charging batteries, leak detectors etc. It charges my laptop with no problem. Does your laptop charge up o.k. in the house? Might be a problem with the laptop battery. (?)
    Jim
    Tucson, Az
    Keeping the Ice Cream Frozen!

  5. #5
    Join Date
    Aug 2003
    Posts
    1,841
    You need 800w with a fan built in around $100. to $150. for a good one don't buy a cheap one it willn't last very long & makes alot of noise.

  6. #6
    Join Date
    Feb 2003
    Location
    NH & Cebu
    Posts
    1,611
    Well, maybe that's my problem. I have it plugged into the cigarette lighter. I wanted quick and easy. I've had the truck 2 years now, and still don't have it all set up the way I'd like it. Just not enough hours in the day.

    I'll try wiring it direct tomorrow.


    Thanks

  7. #7
    Join Date
    Mar 2004
    Location
    Grottoes VA
    Posts
    5,856
    How many watts is your charger?

    Mine is 150W and charges mine jut fine. I can run my laptop for 28 Hours on 1 12 volt battery.

    I take mine camping and watch DVD's when it is raining. My next purchase will be a projector so I can watch DVD's big screen.

    Karst means cave. So, I search for caves.

  8. #8
    Join Date
    Jul 2004
    Location
    Victoria,Tx
    Posts
    6,680
    Good info craig1, I see that my lighter is on a 20 amp fuse. That's only good for up to 200 watts. Thanks

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