Is a modified sine wave inverter safe for the macbook pro or do we need pure sine wave? Some talk on net that modified sine wave harmful.

Kensington Auto/Air Power Inverter with USB Ports

Kensington Auto/Air Power Inverter with USB Ports

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2 Answers from the Community

  • Best Answer:

    I have a black macbook I purchased in 2006. A modified sine wave inverter would not charge the battery, or power the computer otherwise. I see Apple offers a Kensington "regulated" modified sine wave inverter for use with the macbooks. However, my brand name inverter would not work with it, though, to answer your question, it did not harm it. I use a "true" sine wave inverter with no problems to date.

  • There different quality levels for "modified".

    Some are safe and work perfectly.

    Some are not good enough and the MacBook charger will detect this and refuse to work.

    Some are not safe and will damage your charger or maybe even the Mac or worst case perhaps electrocute you or cause a fire.

    High voltage power is dangerous and you should only buy inverters from a reputable source, and unless others have confirmed it works with a Mac you should get a "pure" sine wave one.