Power bank is a very essential product for charging devices.today I would like to share some tips on choosing a power bank1-choose a good quality power bank2-make sure that the output and input specification matches with your devices.3-choose power bank with multiple connections, because this can charge more devices at a time4-choose power bank with LED indicator light and it helps to finding the battery level and charging status5-choose a power bank with built in protection against short circuits, heating and over charging.6-choose power bank with capacity of 10000 mah or more because it can charge smartphones and laptops, etc7-choose a higher ampere power bank because it can charge devices fastly8-choose power bank that fit in your pockets