Reasons to buy
With an impressive 20800mAh available battery capacity, the Promate proVolta-21 ensures that your Smartphone or Tablet is powered for as long as you require. Featuring THREE ultra-fast USB charging ports so you can charge multiple devices at the same time and the Automatic Voltage Regulation provides an optimum output based on the device connected. The proVolta-21 is an ideal travelling companion, designed to be portable in size yet offering huge battery capacity.
Enough Power & Portable Size to Go Around
Ultra High Capacity of 20800mAh yet portable with built-in A+ Li-Polymer battery cells, can keep your devices running all the time.
Charge Faster, Charge Smarter
PowerIQ amp-adjustment technology intelligently identifies your device to deliver its fastest possible charge.
Charge 3 Devices Simultaneously
Fast charging via 3 USB ports (5V, 3.1A max), allowing for three devices simultaneous charging. They are compatible with almost all devices with an input of DC 5V.
Superior Quality for Safety
Top circuit protection chip to ensure complete safety. It supports overcharging, over-voltage, over current, short-circuit protection and temperature protection to protect your devices.
Intelligent LED Light and LED Torch
The four power indicators on the front show the charging status and battery level when you press the On-Off button. There is also a LED flashlight on the power bank. The lighting-up time can reach to 200 hours or more when the power bank is in full power mode. To activate the LED flashlight, double click the On-Off button.
proVolta-21 is compatible with all the key devices that include iPhones, Android smartphones, iPads, tablets, and other USB-powered devices.
For optimal use
To ensure complete safety and best performance, we strongly recommend using your device's original cable, a third-party certified cable (such as MFI) or our included cable.
• Battery Capacity: 20800mAh
• Battery Type: Lithium Ion
• Input: 5V, 1.5A (max)
• Output: 5V, 3.1A (max)