PROMATE Smallest 20000Mah Power Bank 2 USB Ports

Charge your device on-the-go with this powerful 20000mAh lithium-ion power bank: Quantum-20. It features 2 ultra-fast USB charging ports to charge any USB chargeable device. Quantum-20 also includes Automatic Voltage Regulation i.e. it provides an optimum output based on the device connected.