Battery packs are far from exciting, but a reliable source of backup juice can mean oh so many precious hours And of all the options available, the Tylt Energi 10K stands out: its 10,400mAh rechargeable battery can charge your smartphone several times over, it can feed power to up to three devices simultaneously, and it looks pretty smart to boot -- all for a palatable $99.on that long haul flight.
You'll have to trade a hefty package for that power -- and the Energi 10K doesn't show off with any extra features like a flashlight -- but I'd prefer it over the many smaller, cheaper, and more versatile battery packs available. Indeed, if I were feeling especially generous (or packed my usual assortment of gear), I could use the three USB charging ports sitting on the battery pack's front edge simultaneously. Even better, one of those ports actually doles out twice the amperage of its siblings -- it's design for the hefty power needs of tablets, which would otherwise charge at a snail's pace. Those features make the Energi 10K a great choice for anyone who needs a lot of extra power on the go, but it's equally useful if you just need the occasional charge for your phone.
A simple package
The whole package is just shy of an inch thick and weighs in at about 290 grams, or just under half a pound. That's heavier than some battery packs you'll find, but it isn't onerous by any stretch, and right in line with the capacity. The Energi 10K is also kind of attractive, for a battery pack -- there's only so much you can do with a black plastic slab, but the blue band running along the center is a nice touch (also available in gray). The aforementioned USB charging ports sit on the front lip, alongside a micro-USB port for charging the battery pack. Their placement keeps them nice and accessible, and while the ports are labelled "iPhone / iPad ," rest assured that all of your devices are welcome.