Anker PowerCore II, $34 with code LIPO3399

Anker’s PowerCore line has reigned as our readers’ favorite USB battery pack for nearly a year, and its long awaited sequel is cheaper than ever today with promo code LIPO3399.

For a limited time, you can grab the PowerCore II 20000 for $34, the best price we’ve ever seen. In addition to a fresh new design, the PowerCore II includes three high speed USB charging ports with a whopping 30W shared between them, plus dual 10W microUSB inputs, allowing you to recharge the entire brick twice as quickly.