Every phone manufacturer these days touts the charging capabilities of its high-end devices. Most of us are probably familiar with Qualcomm's various Quick Charge specifications, which it licenses to companies like Motorola and Samsung, but there are also other solutions out there. USB Power Delivery is an open standard that's growing more ubiquitous with each day, and OnePlus' Dash Charge breaks records—even as it breaks the USB-C spec.

With all these different ways to charge your phone, how can you actually measure what rate it's charging at?

Read More