Mika Olera

20. Power Banks are an excellent way to guarantee you always have enough battery for your mobile devices. Plus, they can even be used to charge for other items, such as speakers and fitness bands. The Cygnett Power Bank is an invaluable piece of kit, available in various sizes, capacities, and styles. It also has a display that indicates how much-remaining battery power there is and how long it will stay charged at its current charging rate. A 20,000mAh power bank is an impressive accessory and a must-have for any backpack.