Belkin’s website copy claims that these BOOST UP chargers are 40% faster than a 5-watt charger at fully recharging an iPad Air, which is true, but not really a fair comparison because neither an iPad Air nor an iPad mini with Retina Display ship with a 5W charger. In fact, the newest generation of iPads both ship with Apple’s own 12W chargers out of the box, so they’re exactly as fast as this offering from Belkin. However, that’s not to say that there aren’t some slight differences here.
This beast of a battery is the Belkin Travel Power Pack 9000. It’s a 9000 mAh battery, translates to about three or four charges for my iPhone 5S, or 60–70% of my iPad Air’s battery in real life charging situations. The Power Pack isn’t one of those tiny batteries that you use in an emergency to provide a bit of a charge. No, having a Power Pack in your bag is more like bringing the kitchen sink with you (well, if the kitchen sink provided power, and not water).
The Power Pack has two USB ports on it for charging — a 1.0A for smartphones and 2.5A port for tablets — but I really only ever used one of them at a time because I only carry one Lightning cable around with me. The shiny black plastic shell looks good, if a little non-descript, and it does pick up fingerprints easily.