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F1 Flex Power Bank Charger

F1 Flex Power Bank Charger
  • 4 remaining
3500mAh (18650) x F1 Flex charger bundle

Charge your batteries via USB, and then charge your mobile devices outdoors with the battery!

The only charger from Nitecore that doubles as a power bank when a 18650 battery is installed. Without an external power source, F1 can charge an external device connected to its USB output port with a battery in its slot.

Optimized for IMR batteries, it's a smart charger and will charge batteries efficiently up to 1000mA. Auto current cut off included. Just plug and forget. The ideal charger to bring on long travel and outdoor trips.

Close-up views

• 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
• Insured worldwide by Ping An Insurance (Group) Company of China, Ltd.

Testimonials and reviews

What's in the box
  • F1 Flex Charger
  • 1 yellow band
  • 1 black band
Input voltage
DC 5V, ≥500mA
Output voltage
4.2V±1% (slot)/5V±5% (USB)
Output current
1000mA MAX (slot)/1000mA (USB)
Length 87.2mm
Width 24mm
Height 29.3mm
Weight 30.4g (without batteries and power cord)
Compatible with
26650 / 18650 / 17670 / 18490 / 17500 / 17335 / 16340(RCR123) / 14500 / 10440
"This Nitecore F1 charger pack is great to use as a standalone charger as well as portable battery pack. Charge any USB device with this charger including GoPros, cell phones, cameras and other accessories. Highly recommended"

by Jeff Heiden

What happens after payment?

  • You will receive a purchase receipt through Paypal after payment.
  • Your order will be processed within the next working day and we will email you a tracking code once your package has been shipped.

When will I receive my charger?

  • Deliveries in Singapore will take up to 3 to 5 working days by Singpost.
  • International delivery will take 10 to 14 working days by Singpost.

Returns and warranty

If our chargers don't work the way they should, let us know and we'll do our best to get you sorted.

  • One to one exchange warranty within the first 3 months.

User manual

  • 4 remaining

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