Like most average geeks, I assume that when I connect my phone or tablet to a USB power source, it’s going to deliver the level of power it says it will. I don’t know nearly as much about electrical system as some do, so when I saw a crowdfunded gadget called the Legion USB Power Meter, I thought it would be a great tool to help me understand power flow and collect real-world data. So, I dusted off my old tech reviewer’s hat, grabbed a bunch of different USB power sources, and got to work. The goal? To understand if the USB chargers I was using were delivering maximum efficiency and letting me charge my devices as fast as possible. Continue reading USB Wall Charger Roundup Review: All Ports Are Not Created Equal