4000mAh Portable External Battery Charger Power Bank -Black

  • $16.99

Palm size ultra portable power bank


  • Overcurrent protection
  • 4000mAh battery capacity
  • Includes a micro USB charging cable
  • Powers and charges USB-powered devices
  • Automatic charging without the need to tap or hold a button

PrimeCables' 4000mAh high capacity power bank provides the power you need to keep your devices charged on the go. Status LEDs show the charge level at a glance and indicate when the Power Bank is charging and how much charge it has left. A built-in LED flashlight provides emergency illumination when needed.

How to Use:
  • Click the button once to check the charge level.
  • Click the button twice to turn the flashlight On or Off. Charge the Power Bank by plugging it into any USB power source. The LED indicators will blink while charging is in progress.
  • Charge your mobile device by plugging it into the Power Bank. The LED indicators will remain illuminated as long as your device is plugged into the Power Bank.
Review video


Battery Type Lithium-ion
Battery Capacity 4000mAh
Input Connector Type USB micro B female
Input Power 5 VDC, 1000mA
Output Power 5 VDC, 1000mA
Output Connector Type USB A female
Over Current Protection Yes
Operating Temperature +32 ~ +113°F (0 ~ +45°C)
Dimensions 3.5" x 1.7" x 0.8" (90 x 44 x 21 mm)
Weight 4.1 oz. (116g)
Package Includes
1 x 4000mAh Portable External Battery Charger Power Bank
1 x Micro USB cable