You know the drill: it's Friday night, 1:30 in the morning and there's three-percent battery left on your smartphone. Here's the twist, though -- if you had Energizer's Universal Multi-Port or Portable Smartphone Charger handy, it wouldn't be a problem. The company is preparing to unleash both of these products this fall, and we quite like 'em. The Universal Multi-Port Charger ($76) carries a 5,000mAh battery, packs two USB ports and is able to deliver a total of 15W output, which means -- yes -- it supports quick charging. Meanwhile, the Portable Smartphone Charger ($
