Make your customers happy by handing out promotional power banks so that their mobile phone does not run out of charge anywhere they travel. The power banks are available with various charging capacities such as 5000 mAh, 8000 mAh, 10, 000 mAh, 15000 mAh, etc. This portable device fulfills all in one charging needs and it can charge more than one device and are considered as the best travel companion. The custom power banks have a sleek and slim body which have enough space to imprint the brand name, logo and other information in it. It will save the user from the stress of looking for where to charge the phone.