Originally debuted in our 2011 Buyers' Guide, DigiPower's new JumpStart Flip ($50) combines the right features, pricing, and design to evolve the traditional high-capacity USB battery pack into something smarter and better. The roughly iPhone-sized battery pack attractively blends chrome and black plastics to create a flip-open video stand with an atypically powerful 3300mAh rechargeable cell built in, using a sheet of passively grippy rubber to hold…
