Picking a portable battery pack for your iPhone or other smartphone brand can be a daunting task. There are literally hundreds of such accessories in the marketplace that are vying for your attention, available in many shapes, sizes and price points.
The latest entrant to the mobile charging game is a Silicon Valley startup called 4Second Life, which at CES 2016 in Las Vegas showed off its portable charger, the Aluminum VI, which looks (or wants to look) like it was designed by Apple itself.