The Nitecore F2 Flexible Power Bank truly lives up to its name, working as a battery charger while also being able to turn those fully charged batteries into a power source for USB devices. It’s lightweight and small, fitting easily into your gear bag making it an excellent option for adventure loving photographers.

Automatic Smart Charging

The Nitecore F2 Flexible Power Bank can charge 2 batteries simultaneously. Its built-in microprocessor allows it to identify the battery type and select the appropriate current and voltage. LED indicators display charge status so you quickly see if your batteries are charged, or how much power is left if using the batteries to charge other devices.

Wide Compatibility

Designed for high-drain power sources, the F2 Flexible charger is compatible with a range of lithium-ion or IMR batteries. It also features a USB 3.0 Micro-B port (with Micro USB support) which offers more efficient battery charging and the ability to connect it to other power sources.

*See Specifications for full battery compatibility

Convenient USB Device Charging

A USB 5V output lets you use the F2 just like any other power bank. Once your batteries are fully charged, you can then use them to charge other devices, like phones, cameras, and more. When paired with your separately available 18650 3400mAh batteries, you can charge a GoPro up to 4 times or a smartphone up to 3 times, giving you amazing versatility.

Adaptive Current Distribution

The F2 charger can automatically choose the most appropriate charging current based on the battery placed in each charging slot. It also detects battery status, whether it’s depleted or half charged, and intelligently selects a suitable current to safely continue charging.

Compact, Portable Design

The Nitecore F2 power bank is incredibly small and lightweight, made from robust polycarbonate. Combined with its versatile functionality, this makes it an excellent and portable option for easy battery and device charging on the go.


DC 5V (USB compatible)

Output Voltage

4.2V ± 1% (Battery)
5V ±5% (USB)

Output Current

USB: 2A Max
Battery: 2 x 1A Max


94 x 44 x 25 mm



Battery Compatibility (Li-Ion/IMR)

26650, 18650, 17670, 18490, 17500, 17335, 16340 (RCR123), 14500, 10440

* Specifications subject to change by the manufacturer without notice
Nitecore F2 Flexible Power Bank


* Dispatch timeframes are indications only and may vary for multiple quantities. Timeframes are updated regularly during normal business hours.