External batteries are becoming an increasingly common item to keep on hand but they can be easily misplaced; enter the EFFIC Mug to not only offer a convenient spot to keep your phone but also a backup charge. The EFFIC Mug is a great travel mug for commuters but the incorporation of a section to hold your phone makes it even more awesome. The internal battery provides up to three full charges for your smartphone, which means you'll never be without power again.
The innovative design of the EFFIC Mug holds your phone in place via a simple magnetic system that affixes to the back of any device. To top the EFFIC Mug off, the design is also leakproof, which means no worries during a bumpy commute.