What do you do when you are on the go and want to charge your smartphone, tablet or laptop?….Well, if you haven’t got the answer then let me tell you that Power Banks are just the solution!. These devices can be charged either by plugging them into the main power supply or utilizing the solar charge capability that some possess. The ranking below of these devices is mainly based on their performance in four key areas; 1)Amount of charge they can store, 2)time they take to store the charge, 3)time they take to charge any device and 4)value for money. So check out these list of 10 best power banks and let us know your favourite!