9 Replies Latest reply: Mar 30, 2007 12:44 AM by kuhplox_007
hawaii2484 Level 1 Level 1 (0 points)
Is there a car charger for the new macbook?

Blackbook 2.0 GHz, Mac OS X (10.4.6)
  • Larry_Rymal Level 2 Level 2 (255 points)
    I was at the local Apple Store and asked they very question. I was told there wasn't one, but a 12volt inverter would certainly work. The Mac transformer is rated at under 70watts, so there's a lot of choices.

    At Wal-Mart, there's a 100 watt inverter for $19.93. Just plug the Mac transformer into it, route your cables out of the way and you are done.

    http://www.walmart.com/catalog/product.do?product_id=4891078
    Item Description

    Great for use with laptops, cellphones, and other mobile electronics, Whistler's 100-watt power inverter provides convenience on the road by converting 12-volt DC power to 110-volt AC power. Offers 100 watt continuous power, and a maximum surge capacity of 200 watts.10 amp power requirement.

    MacBook   Mac OS X (10.4.6)   G4 Tower, Atari ST with Mac Plus emulator
  • photogFG Level 1 Level 1 (10 points)
    One thing to keep in mind is that power inverters are horribly inefficient. I would suggest keeping the car running while you are powering the laptop with an inverter otherwise you are going to find yourself with a dead battery surprisingly fast. They have to draw a lot of power to convert it to A/C and then the brick converts it back to D/C. It wastes lots of power which only means that it will drain your car battery much faster than if a true auto charger existed for the MacBooks.

    But with that in mind, it works fine...
  • hawaii2484 Level 1 Level 1 (0 points)
    What's the mac transformer? Is it the power cord?

    By purchasing the walmart inverter, would this at all hurt my macbook?

    Thanks for all of your help!
  • Mike Lee7 Level 1 Level 1 (40 points)
    Agreed!

    Our Magsafe Airline adapter DOES charge the battery in Airlines AND work in cars!
    NO INVERTERS!

    3 months of happy customers!!

    http://mikegyver.com
  • TehKiteless Level 1 Level 1 (40 points)
    Hawaii2484: It is unlikely the inverter would harm your computer. It is the laptops power supply (transformer) job to provide safe power to your computer. There are also tolerances built into most electronic devices to allow a narrow range of power and it still work fine.

    As for training your battery, this is true if you have an older battery. They are only like 60 percent efficient. SO if you are drawing 80 watts, you are actually pulling around 120 watts to feed your lappy.

    You will find that because of this problem, older batteries can not provide enough AMPs to the inverter to power it while the engine is not running. This is especially true on cars that are over 7 or 8 years old.

    ALl of this is based of my past usage of a "Wagon Tech" 140Watt inverter. It has provided power to a variety of devices over the years including my current MacBook.

    - Kiteless
  • Michael King Level 2 Level 2 (230 points)
    FWIW, I use the same Kensington 120W AC/DC adapter with the WinXP laptop from The Employer and I'm a big fan of it - don't know how quickly it charges but has no trouble running a more power-hungry hp laptop. Never tried it in airplane seat, but from AC will operate the computer, charge the computer, and charge cell phone at the same time daisy chained from a USB port on the computer, although charging is somewhat slow in that configuration.

    Also got a tip for it to charge my iPod, so I only need one power gizmo when I travel no matter where I'm working. No reason to think it won't work just as well with a Magsafe adapter. I do wonder tho, how long before Kensington comes out with the Magsafe tip...
  • Hans Verhoeven Level 1 Level 1 (5 points)
    Do i understand you well that you say you use an Magesafe airplane adapter in your car. Because at the site they say that you can't use it in a car

    Hans
  • First Magus Level 6 Level 6 (15,850 points)
    He said the one they sale works, not apples. See the link in his post.


    Mort
  • kuhplox_007 Level 1 Level 1 (0 points)
    i will suggest to you to bye a extra battery like i did.