We were impressed with the LINK Power Drive's compact size and its built-in Lightning cable, micro-USB cable, and stand. There's a handy toggle to turn the battery feature on and off, and there's an LED that shows the charge. The built-in battery can be charged via micro-USB and will charge your device whenever it's toggled on.
The LINK Power Drive uses an accompanying Power Drive LT iOS app to manage files, letting users transfer files to the drive or play media files directly from it. There are also tools for automatically backing up the iPhone's contact list and camera roll. Transferring files from a Mac or PC to an iPhone is easy with the Power Drive, as it's possible to plug it into a computer, load up files, and then transfer them over to the iPhone using the app.
The app supports file types like Word, Excel, PowerPoint, PDF, MP3, M4A, MP4, MOV, BMP, GIF, JPG, PNG, and TIFF. It requires an iOS device that's running iOS 7 and later, so you'll need a newer iPhone to use the LINK Power Drive.
We had a couple qualms with the Power Drive - the app is unfortunately not optimized for the iPhone 6 and the iPhone 6 Plus despite having received several updates across 2015, and it's also a bit frustrating to have the app pop up every time the Power Drive is plugged in.
The LINK Power Drive can be purchased from Amazon.com in 16, 32, and 64GB capacities. At time this review was published, the 16GB version was priced at $71.70, the 32GB version was priced at $102.73, and the 64GB version was priced at $127.33.