Nitecore F4 Flexible Power Bank and Battery Charger for 18650 Li-ion Batteries

SKU:Nitecore F4

Availability: Backordered



Power up your next adventure with the NITECORE F4, a four-slot battery charger that can serve double duty as a power bank and battery organizer. The F4 is equipped with 2 USB outputs for charging and a micro-USB input for charging 18650 IMR/Lithium Ion batteries. The USB port allows users to quickly charge and power devices with a maximum output current of 2A.

The F4’s LCD displays key battery information including voltage, USB output, charging current, charging volume and battery slot. The intelligent charging of the F4 independently controls the 4 slots with a max charging current of 1A in single slot. The charger can also be used with batteries as a power bank to charge cellphones, flashlights, headlamps, and other USB devices on the go.

The compact body of the F4 weighs 4.32 ounces and allows you to have to always have power at your fingertips - no matter how far you travel. Ideal for backpacking, this is the perfect charger for the rugged nature-lovers out there needing a lightweight power source and battery charger. A sliding cover helps organize batteries and enables you to carry batteries safely.


  • Four-slot flexible power bank
  • Charging and discharging functions
  • Integrated intelligent USB charging and discharging management system
  • Capable of charging 4 batteries simultaneously and controlling each slot independently
  • Micro-USB 2.0 input port enabling 1A charging for 2 slots simultaneously
  • 2 USB output ports capable of outputting 2A current simultaneously
  • LCD real-time display on Battery Voltage, Charging Current, Charged Capacity, USB Output Current and Output Capacity
  • Energy saving hibernaion function for LCD display
  • Over-discharged battery activation
  • Reverse polarity protection and anti-short circuit protection
  • Designed for optimal heat dissipation
  • Made from fire resistant, flame retardant PC materials
  • Certified by RoHS, CE, FCC and CEC
  • Insured worldwide by Ping An Insurance (Group) Company of China, Ltd.


Input Voltage: DC 5V 2A
4.2V±1% (Battery) / 5V±5% (USB) 
2 x 1A / 4 x 0.5A (Battery) / 2 x 2A (USB)
Compatible with:
Li-ion/IMR 18650 ONLY
Dimensions: 4.46”×3.39”×1.06” (113.4mm×86.1mm×27mm)
Weight: 4.32oz (122.5g)