For example, if you see you're running out of power fast, you might be able to lower your brightness or turn on low power mode to prolong your device's life. What I don't like It's expensive, and doesn't have the highest capacity There isn't a lot wrong with the Anker Prime...
You don't want to be caught in a situation where your devices run out of power, especially on the go. However, if you have the rightpower bank, you won't have to. With the Anker Prime 20K, you can charge two devices at one time, so you won't have to go with...