Charging A Laptop on 12V?
In reading about charging laptops off 12V, most people seem to advise using an inverter. However, we'd like to avoid the wasted power when converting from DC to AC and back to DC. I see some cigarett...
Forum Discussion
GordonThree wrote:
Here's a hard pill to swallow. Using the DC to DC converter might actually waste more energy. their designs are likely only be 70% efficient, especially for the cheapest unit you can find on Amazon / eBay.
Good point, GordonThree. That actually is something I've been wondering. I've read several comments on Apple forums where people are saying that their converters can keep their MacBooks operating but do not charge. As far as I've been able to see, I haven't found a vendor that produces Apple converters and is endorsed by Apple. That looks like any Apple converters for sale are grey market and likely to have questionable quality.
I'm curious, though, if someone has had a contrary experience.
