• Family power bank allows charging of 3 power banks at once • Each power bank can be used and charged individually even without the base • Proprietary connectors: No need to plug the power banks, just place on base to charge • Has 2 USB ports that can be used to charge devices when power banks are not charging • Micro-USB cable included • Original Samsung SDI cell used inside • Beautiful ring glows around the base when plugged in • Optimum Output power - 5V/1A suitable for all phones • Safety oriented: Intelligent protection against overcharging, over-discharging, and overload