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

Nitecore F2 Flexible Power Bank 
(batteries not included) 

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. The power bank comes equipped with two USB outputs, each capable of outputting 2.0 Amps of current to quickly recharge your device. The charger comes with a 3-LED power indicator for each bay so you can keep track of the remaining charge of your newly-fashioned power bank.

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. Each bay automatically detects the size of its installed battery, adjusting charging current to fit its needs, and charges independently, allowing you to charge 2 different battery sizes simultaneously. Even while charging its inserted batteries, the F2 can still act as a power bank for your USB-rechargeable devices, diverting the majority of current to your device while still leaving 0.5 Amps to refuel the cells. Don't let your unused Lithium Ion cells go to waste; transform them into a portable power source for your devices with the Nitecore F2 Flexible Power Bank!

Features: 
- 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
- Automatic battery identification adjusts charging current to match installed battery
- Batteries are charged simultaneously and independently
- Optimized for IMR battery charging
- Made from fire-retardant PC materials
- Designed for optimal heat dissipation
- Reverse polarity and short circuit protection
- CE, RoHS, FCC, and CEC certified

Included Accessories: 
- 1 x USB 3.0 Micro B Charging Cable
- 2 x Rubber Bands 

Specifications:
- 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)