I have a 2012 15.4" MBP & I almost get a hernia when I pick up the backpack.
According to the specifications I found on the Apple website, the 2012 15" MacBook Pro weighs 5.6 pounds. https://.apple.com/kb/SP694?locale=en_USI
That's why I'm looking for something lighter.
I'm referring to the new MacBook with Retina display with the USB-C connector. The websites refer to it as the new MacBook Air.
Since it uses a USB-C connector for charging, I was wondering if a Mophie or Mophie-clone can be connected to the MacBook with an adapter cable & either charge it or maintain the charge level.
Why aren't you a fan of the Air? I've noticed that the 13" MacBook Pro with Retina display is only about a half pound heavier than the 13" Air. And the Pro is about 2 pounds lighter than my 15" MBP.