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EnergyFlux 4400mAh Rechargeable Hand Warmer / External Battery Pack

K408-1 Series

Out of Stock

Available from these stores:



Note:  Human Creations products are sold exclusively by Beanworthy. Items sold by other sellers are not genuine Human Creations products.


  • Warms on both sides of the unit to keep hands toasty
  • Two temperature settings:109℉ (approx. 5 hrs) and 120℉ (approx. 4 hrs)
  • Charges digital products, including mobile phones, MP3 players, digital cameras, etc.
  • Rechargeable 4400mAh lithium-ion battery with up to 500 recharges
  • Charges via either USB or AC adapter (AC110-250V/ 50- 60Hz)


Keep your hands warm and toasty at all times with EnergyFlux. With its wrap-around aluminum casing, this nifty rechargeable hand warmer will provide even heat throughout the unit to keep both your palms and fingers warm at the same time.

Suitable for anyone who's a little averse to the cold, it's especially handy for those with serious afflictions like Raynaud's - an extreme sensitivity to low temperatures. As proud sponsors of the Raynaud's Association, EnergyFlux is recognized as being effective in bringing a little sunshine back into sufferers' fingertips.

EnergyFlux is not only ideal for winter, it can also serve as a backup battery all year round. EnergyFlux can charge phones or other digital devices several times before its own power is depleted, making it convenient for short business trips and other traveling!

Convenient Switch
The user-friendly push switch is designed to make it easier on your fingers when they're cold and rigid. Switch between low and high depending on your needs.

Easy-to-Use Cables
The EnergyFlux comes with just two cables:

  • Mini to Male USB cable to charge the hand warmer. Connect with your computer or provided adapter plug for easy charging.
  • Mini to Female USB cable to charge other devices. Just connect the USB cable of any digital device to this cable for easy charging.  

Available Colors: 
Silver/black, carnation pink, cherry pink, silver/white


  • It may take a little time for EnergyFlux to heat up after being left out in the cold.
  • Heating times are extended by using any form of insulation (e.g. placing it in your gloves, pockets or scarf).

Package Contents: 

  • Hand warmer
  • Adapter 5V 1A
  • Mini USB to Male USB charging cord 
  • Mini USB to Female USB charging cord
  • User manual


The EnergyFlux 4400mAh is covered by a one-year warranty, from the day of purchase. Full or partial replacements are available for any defective product still under warranty (excluding that of which resulting from misuse or other unforeseeable external circumstances). Cost of return shipping past the first month of purchase is not reimbursable. For more information, please refer to the FAQ page.

Comparison Table

On the Today Show with Elizabeth Mayhew:

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Note: The $18 price displayed on screen is for the EnergyFlux Lite 2600mAh. The actual units seen on the show are EnergyFlux 4400mAh.