Yeah, alright, this one might seem a little simplistic, but it’s very useful. Essentially they act as an external battery you can charge separately using a USB connector or even replenish with a store-bought battery. Worth having one of these in reserve in case an emergency arises while your phone is out of juice. I bet you don’t want to miss out on all the adventures of Snap chatting, Instagram, Facebook, or more serious stuff like work emails.
