Charging via dc power inverter

Discussion in 'MacBook Air' started by Psilocybin, Nov 25, 2011.

  1. Psilocybin, Nov 25, 2011
    Last edited: Nov 25, 2011

    macrumors 6502a


    I bought a cheap power inverter plugs into your cig lighter at Walmart to charge my kids DVD players. Now I know there are a lot to consider. Meaning how clean the sine wave is and if it protects from over loading.

    Should I trust something like this to charge my 2011 MBA?
  2. macrumors 6502a

    There really isn't too much to consider here. If it is at least about 60 watts at ~120 volts, you will be fine. Your Air's power adapter make sure the Air gets what it needs.

    Your inverter will be fine.
  3. macrumors 6502a


    It's runs at 115v
  4. macrumors 68030


    Be sure it has enough watts. I bought one that had 60 watts.. more then enough for the 45 watt charger. One day i was using it and smelt a burning smell. I read the fine print and said it can only provide more than 30 watts of electricity in ~5 minute intervals. Oops. I bought a 150 watt one later.
  5. macrumors 68030


    Personally, I'd only use a true sine-wave inverter. Modified sine wave are cheaper - however they can cause issues. Increased heat, reduced voltages, electronic noise.

    Pony up a couple extra bucks for a sine wave, because they produce electricity identical to what comes out of the wall.
  6. macrumors 6502a


    wasnt planning on using it just curious if it was a good idea took electonics classes and i know the damage a distorted sine wave can do when using amplifiers and so on

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