Will the words "my phone died" soon become extinct?
A number of start-ups are creating portable phone rechargers in the hope that those stranded moments will become a thing of the past.
And even though battery life is getting longer—witness the release of the iPhone 6—our increased usage puts more demand on our devices.
Combine longer hours, more applications, faster microprocessors and bigger and generally brighter screens, and the need for battery capacity becomes bigger than ever. "Battery life continues to be an issue, as people shift even more of their computing minutes to smartphones," said J.P. Gownder, vice president and principal analyst at Forrester Research.
"We're not only using them for communications (email, social media) but also for commerce (researching goods, purchasing goods), media (video consumption, reading)," said Gownder. "And, soon, perhaps paying for goods and services (Apple Pay)."
Here are four gadgets designed to address the need.