Portable: The Power Banks are light and useful if travelling by public transport or in the car.
Multiple ports: If you have more than one gadget, it does not matter as connectors can be provided to charge a variety of devices. They operate for all brands of android devices. You can use any brand of mobile on any external power bank as long as their USB-ports are compatible. In addition, you can use the external charger to charge different electronic devices such as iPhones, iPods, PSP and iPads.
Most power banks are appealing in nature and can you can build a bespoke Power Bank if you reach the minimum quantities and they are very useful in emergency purposes. Some Power Banks have anti-scratch surface that lowers the chances of them getting damaged.
Minimized self-energy consumption: Most external battery chargers manufactures are now producing power banks that can minimize self-energy consumption. This means your backup power can run for several hours while charging your devices.
Power Banks are now affordable and there is a model to suit all budgets and they make for a great company gift.