Ec technology powerbank Ec technology is one of the best power banks there is for the money. Excellent performance and lots of juice for all your gadgets. They will charge most products that use a USB cable to charge up your device from tablets, phones, mp3 players, certain laptops and a whole lot more. This model has 3 USB 3.0 ports as well as a handy flash light and a good solid design. Lots of people are using power banks now more than ever and have grown in popularity over the last few years weather it’s for days out camping or just when you can’t get to a power point. There is a lot of different brands of power banks on the market now some are better than others and some don’t perform well because of cheap imports.