If you are buying a power bank, there are several factors that you need to keep an eye out on. Make sure that you cross-check all the reviews and see the kind of response it has gotten. In case it doesn’t have a good review, skip out on it even if it is from a good brand. Additionally, check for some of the in-built features including the overcharging and overvoltage risks. Also, ensure that the body of the device is durable enough.