The low capacity doesn’t mean that Energi is a bad option. It uses a compact plastic housing that measures around 3” tall, 2.5” wide, and a little less than 1” deep—easy to slip into a pocket or a bag, without the need to carry a separate power charger, because integrated wall blades fold out from the back. There’s no Micro-USB input, though, so you’re not able to refuel the battery using a computer, and the…
