Nitecore F2 Flexible Power Bank and 2-Bay Charger for Li-Ion, IMR Batteries




Brand: Nitecore

Nitecore F2 Flexible Power Bank

Portable Power

Turn your Lithium Ion batteries into a power source for your devices with the Nitecore F2 Flexible Power Bank! This compact adapter takes your rechargeable batteries, typically used in flashlights and other high powered electronics, and transforms into a portable power bank for your cell phone, camera, or other USB-rechargeable electronics. Less than 4 inches long, this handy tool is compatible with a wide range of cylindrical Li-Ion battery sizes, including 18650, 16340 (RCR123A), and 14500, allowing you to use whichever batteries you have available. The F2 even comes with a pair of rubber bands to hold the cells in place while in use.

Charge Your Devices, Your Batteries, Or Both!

The F2 is certainly a serviceable source of power for your devices, but its charging capabilities don’t end there. In addition to draining your Li-Ion cells to recharge your other devices, this versatile tool can also be used to recharge the installed cells when connected to an external power source. The charger uses an innovative USB 3.0 Micro-B power input, which is 30% more efficient that standard micro-USB ports, to supply your batteries with rapid recharging.


  • Doubles as both a Lithium Ion battery charger and a portable power bank
  • Compatible with a wide range of cylindrical Li-Ion batteries
  • 2.0 Amp output for rapid charging
  • Two USB power outputs allow you to charge multiple devices at once
  • Included rubber bands hold batteries installed in place
  • Special USB 3.0 Micro-B power input is 30% more efficient than typical micro-USB
  • Still compatible with micro-USB as a power input
  • LED power indicators display remaining charge of each bay’s battery
  • Included Accessories:
    • 1 x USB 3.0 Micro B Charging Cable
    • 2 x Rubber Bands


      • Input: DC 5V ≥0.5A (USB 3.0 Micro-B, Micro-USB)
      • Output Voltage: 4.2V±1% (Battery) / 5V±5% (USB)
      • Output Current: 2 x 1.0A MAX (Battery) / 2.0A MAX (USB)
      • Compatible with:
        • Li-ion / IMR / LiFePO4: 26650, 18650, 18490, 17670, 17500, 17335, 16340, 14500, 10440
      • Dimensions:
        • Length – 3.7″ (94 mm)
        • Width – 1.73″ (44 mm)
        • Height – 0.98″ (25 mm)
      • Weight: 1.64 oz (46.5 g)
Charge Channels: 2
Supported Chemistries: Li-Ion
Compatible Battery Sizes: 10440, 14500, 16340 / RCR123A, 17335, 17500, 17670, 18490, 18650, 26650
Charge Current: 1000mA
Batteries Included: No
Product Certifications: CE, CEC, FCC, RoHS
Brand: Nitecore
Warranty: Battery Junction 30-Day Warranty, Nitecore 1 Year Warranty
Return Policy: Battery Junction Return Policy
Product Weight: 1.64oz
Product Dimensions: 3.7″ (L) x 1.73″ (W) x 0.98″ (H)
UPC: 6952506491889
Country of Origin: CN

Additional information


Battery Junction


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