Though we’ve seen Mipow’s Power Tube batteries in the past, the company’s new http://www.mipow.com/en/product/power-tube-3000-lightning-portable-mobile-battery-charger-for-iphone-6.html”>Power Tube 3000 ($50) is a much smarter pack than its predecessors. The small 3000 mAh standalone battery comes with both an embedded USB connector and a short attached Lightning cable, so no extra cables are needed. Most notably, Power Tube…
