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18650 Charger and Powerbank F4 - NITECORE

39.90

Tax included

The Nitecore F4 is a revolutionary 2-in-1 device: it functions both as a 4-slot charger for 18650 batteries and as a portable Power Bank to recharge your USB devices.

Total Flexibility: Charge your 18650s or use them to recharge smartphones and tablets.
LCD Display: Real-time monitoring of voltage, capacity, and current.
Outdoor Design: Sliding cover to protect batteries from dust and impacts.
Intelligent Management: 2 USB output ports and independent charging channels.

Size Guide

This is an approximate conversion table to help you find your size. If you have already purchased an item from our brand, we recommend you select the same size indicated on its label.

Men's Sizes

International	XS	S	M	L	XL	XXL	XXXL
Europe	32	34	36	38	40	42	44
US	0	2	4	6	8	10	12
Chest Circumference (inches)	33-35"	36-38"	39-41"	42-44"	45-47"	48-50"	51-53"
Chest Circumference (cm)	84-89	91-97	98-104	107-112	114-119	122-127	129-134
Waist Circumference (inches)	28"	30"	32"	34"	36"	38"	40"
Waist circumference (cm)	71	76	81	86	91.5	96.5	101.5

LOWA FOOTWEAR SIZE CHART

SIZE SELECTION:

THE SIZES IN THE DROP-DOWN MENU ARE UK SIZES (ENGLISH)

conversion chart: UK size - (IT size) - size in mm

Size 6.5 (40) 257mm

Size 7 (40 3/4) 262mm

Size 7.5 (41.5) 266mm

Size 8 (42) 270mm

Size 8.5 (42.5) 274mm

Size 9 (43 1/4) 278mm

Size 9.5 (44) 283mm

Size 10 (44.5) 287mm

Size 10.5 (45) 291mm

Size 11 (46) 295mm

Size 11.5 (46.5) 300mm

Size 12 (47) 304mm

Size 12.5 (48) 308mm

Size 13 (48.5) 312mm

NEED ADVICE ON CHOOSING A SIZE?

Take one of your sneakers and look at the size in mm or cm, look at the diagram above to see what it corresponds to and order your size!

e.g., your sneaker is 27.2 cm long? Great, the closest and most correct size will be: "TG 8.5 (42.5) 274mm", in the purchase menu select size 8.5UK!

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Description
Product Details

The Nitecore F4 Flexible Power Bank & Charger is the ultimate tool for outdoor and airsoft enthusiasts who never want to run out of power. Designed to withstand adventure, this device combines the functionality of a professional charger with that of a powerful power bank.

Intelligent Power Bank Function
By inserting up to four Li-ion 18650 batteries (not included), the F4 transforms into a portable charging station with two USB outputs. It can recharge smartphones, tablets, action cameras, and GPS devices. The intelligent system prioritizes discharging the batteries in slots 1 and 2, preserving the charge of those in slots 3 and 4 for other uses (such as powering your tactical flashlight). With a full set of batteries, it can fully recharge an iPhone X in about 2 hours.

Advanced Charging and Diagnostics
Connected to the power grid via the Micro-USB port, the F4 charges the batteries independently, optimizing the current (up to 1000mA per single slot). It is equipped with a 0V activation function capable of "reviving" excessively discharged 18650 batteries. The large LCD screen provides precise real-time data on voltage, current delivered, and charge level of each individual cell. To save energy, the screen automatically goes into standby after 10 minutes of inactivity or can be turned off manually.

Robust and Safe Design
Unlike open desktop chargers, the F4 has a sliding cover that locks the batteries in place and protects the contacts from dust, sand, and impacts inside the backpack. Certified CE, RoHS, and FCC, it guarantees maximum safety against short circuits and overheating.

Technical Specifications: