All-in-one power bank - Four types of cable outputs integrated into the power bank. The freeVoice Power Bank is a mobile power bank that can charge up to four devices simultaneously. Two USB-A ports, one USB-C port, and one Micro-USB port ensure that a smartphone and three additional devices can be charged with up to 15 W of power. The display shows you the current charge level and when the power bank needs to be recharged. No suitable charging cable in your luggage? No problem with the freeVoice Power Bank. The power bank has four integrated cables for charging your device. These are neatly stored in the case and can be unfolded when needed.