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Nitecore F1 Flex Outdoor Charger for 18650, 16340 (RCR123), & 14500 Batteries
Nitecore F1 Flex Solar Outdoor Charger for 18650, 16340(RCR123), &14500 Batteries

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Price: $9.90

Availability: Usually Ships in 24 Hours
Product Code: CHG-NITE-F1

USB Charging Cable

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1x Nitecore 2300mAh 18650 [Add $8.96]
1x Nitecore 3400mAh 18650 [Add $17.06]


The F1 Flex is Nitecore's first outdoor battery charger. Lightweight and durable, this charger is a fantastic way 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.


  • Compatible with cylinder rechargeable Li-ion batteries of various sizes
  • Intelligent USB charging management system
  • Up to 1000mA fast charging through Micro-USB input port
  • 1000mA fast charging through USB output port
  • Optimized design for IMR battery charging circuit
  • Three power indicators to indicate charging/discharging status
  • Automatic power level detection
  • Instant battery voltage indication upon battery installation
  • Automatic battery detection and appropriate charging voltage/mode selection
  • Battery reversed polarity protection and short circuit prevention
  • Made from durable PC material (fire retardant/flame resistant)
  • Designed for optimal heat dissipation
  • Certified by RoHS, CE, FCC and CEC


  • Input : DC 5V, ≥500mA
  • Output voltage:
    • 4.2V±1% (slot)/5V±5% (USB), 1000mA MAX (slot)/1000mA (USB)
  • Compatible with: Li-ion /IMR:
    • 26650/18650/17670/18490/18350/17500/17335/16340(RCR123)/14500/10440
  • Size: 3.43 inches × 0.94 inches × 1.15 inches (87.2mm×24mm×29.3mm)
  • Weight: 1.07oz (30.4g, without cord)

Content in package: F1 Outdoor charger x1, Rubber Band x2

Average Rating: Average Rating: 5 of 5 5 of 5 Total Reviews: 3 Write a review »

Nitecore NL1823 (NL183) 2300mAH 3.7V Rechargeable 18650 Battery
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Nitecore NL1823 2300mAH 18650 Rechargeable Battery
NITECORE NL1834 3400mAh High Capacity Rechargeable 18650 Battery
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Nitecore NL1834  3400mAh 18650 Rechargeable Battery

  0 of 0 people found the following review helpful:
5 of 5 Lightweight and multi use April 5, 2020
Reviewer: Rebecca Durinick  
I do a lot of backpacking and camping so oz are everything. This weighs next to nothing and is space conservable. Bulky battery chargers aren’t an option in a pack that contains all your gear. Doesn’t seem like it is going to break. It looks and sounds flimsy, but isn’t. I couldn’t find a charger like this from any brand. I’m not usually brand loyal, but I’m sold on Nitecore.

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  0 of 1 people found the following review helpful:
5 of 5 December 10, 2018
Reviewer: Joe kocisj from Hazlet, NJ United Stathes  

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  0 of 0 people found the following review helpful:
5 of 5 Good charger December 8, 2017
Reviewer: Matthew Ellison from Fort Collins, CO United States  
Does as advertised, haven't had any problems. I like that you can charge multiple battery types and then use those same batteries as a power pack if needed. Good functionality. Does come with 2 wide rubber bands to hold in batteries in if using as a power pack, could use a place to store those bands when not in use, but great charger

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