I have a G-Tech 1TB G-DRIVE USB 3.0 Mobile Hard Drive I run from my MacBook Air. When running on battery power how much with the hard drive use. What will it do to the battery life?
G-Tech 1TB G-DRIVE USB 3.0 Mobile H-OTHER, iOS 6.0.2
The system will limit how much power goes to the USB port, so it is best to have either an external/wall-powered drive or to use a powered USB-hub (pugs into wall outlet) so the MBA only has to provide communications.
Faster talking to the drive (when it is self=powered) will take slightly more juice than when communications are silent. Powering that drive via USB id limited by power-distribution system and may shut down that USB port,
How much battery power will an external hard drive use?
