NITECORE F4 Four-Slot Flexible Power Bank User Manual
- June 7, 2024
- Nitecore
Table of Contents
NITECORE F4 Four-Slot Flexible Power Bank User Manual
IMPORTANT NOTICE CONCERNING WARRANTY SERVICE
Thank you for purchasing! Before using this charger, please find your
verification code on the package box, and go to
http://charger.nitecore.com/validation (or scan the QR code beside the
verification code to visit on your mobile phone). Type in your verification
code and personal information as required, and submit the page. After
verification, Sitecore will send you a warranty service email. This email and
your registration email address are essential to your possible warranty
application. Before you complete the warranty service registration, you cannot
enjoy our warranty service for your purchase.
Features
- Four-Slot Flexible Power Bank
- Charging and discharging functions
- Integrated intelligent USB charging and discharging management system
- Capable of charging 4 batteries simultaneously and controlling each slot independently
- Micro-USB 2.0 input port enabling 1A charging currents for 2 slots simultaneously
- 2 USB output ports capable of outputting 2A currents simultaneously
- LCD real-time display on Battery Voltage, Charging Current, Charged Volume, USB Output Current and Output Volume
- Energy saving hibernation function for the LCD display
- Automatic detection on the battery level and automatic adoption for the optimal charging modes between CC and CV
- Battery group discharging function
- Reverse polarity protection and anti-short circuit protection
- Activates over-discharged batteries with protective circuits
- Made from durable and fire-retardant PC materials
- Optimal heat dissipation design
- Certified by CE, FCC and CEC
- Insured worldwide by Ping An Insurance (Group) Company of China, Ltd.
Specifications
Input: DC 5V = 2A
Capacity: 60Wh (MAX)
Output: 4.2V±1% (Battery) / 5V±5% (USB) 21A, 40.5A (Battery) / 2*2A (USB)
Compatible with: Li-ion/IMR: 18650
Dimensions: 113.4mm×86.1mm×27mm (4.46″×3.39″×1.06″)
Weight: 122.5g (4.32oz) (Charging cable not included)
Accessories
USB Charging Cable
Safety Instruction for Lithium-ion Batteries
-
Charging Current
For all rechargeable Lithium batteries (including Li-ion, IMR and LiFePO4 batteries), we suggest not using current larger than 1C for charging. For small capacity batteries, the charging current must be smaller than 1C. C=Capacity of a battery. For example, 1C in a 2600mAh rechargeable Lithium battery is 2.6A. 1C in a 3400mAh rechargeable Lithium battery is 3.4A. Excessively large charging current will lead to great amount of heat, and consequently battery damage and explosion. -
Precautions
(1) DO NOT short circuit the battery in any way.
(2) DO NOT use a 3.7V/3.8V Lithium battery when its voltage is lower than 2.8V, otherwise it can be over-discharged, and/or prone to explosion at next charging.
(3) We strongly recommend batteries with protective circuit. For batteries without protective circuit (such as IMR batteries), please stay alert for over-discharge and short circuit.
(4) DO NOT discharge a battery with a discharging current larger than its maximum rated current. -
Long-term Storage
The best storage voltage for 3.7V/3.8V rechargeable Lithium batteries is 3.7V. Voltage too low or too high can damage your battery during storage. You can discharge a battery to 3.7V, or charge it to 3.7V in a charger before you keep it in long-term storage.
Operating Instructions
The F4 has charging and discharging functions. When connected to an external
power source, the F4 is able to charge 18650 Li-ion rechargeable batteries,
and also the external USB device when the input power is sufficient. When
disconnected from an external power source, the F4 can be used as a power bank
to charge an external USB device with 18650 Li-ion batteries.
Charging Batteries
Insert the batteries: The F4 features 4 independently controlled charging
slots. As illustrated, please slide to open the battery holder, insert 1-4
battery(-ies) into the slot(s) according to the polarity mark on the slot and
slide to close the battery holder. After the batteries are inserted (without
input or output), the screen will display Battery Voltage of the current slot,
Battery Level, and the USB icon. Short press the Power Button to cycle through
the information of different slots. Connect to the power source: Connect the
F4 to an external power source (a USB adapter or other USB charging devices
with an output current of 2A) via the USB charging cable to begin charging.
Charging information display: During the charging process, the screen will
display Battery Voltage, Charging Current and Charged Volume of the current
slot with the flashing Battery Level to indicate the charging process. When
the battery is fully charged, the F4 will automatically cease the charging
process, and the screen will display “End” and a non-flashing full Battery
Level. Short press the Power Button to cycle through the information of
different slots. (When the input power is sufficient, the F4 can charge the
batteries and the external USB device simultaneously. The screen will show the
battery charging information only.)
Charging External Devices
Connect to the external device: After the battery insertion, connect the F4 to
an external USB device via the USB charging cable to begin charging.
Discharging information display: During the output process as a power bank,
the screen will display Battery Voltage, Output Current, Output Volume,
Battery Level and the USB icon. Short press the Power Button to cycle through
the information of different slots. When both USB output ports are being used,
long press the Power Button for 3 seconds to cycle through the information of
both ports. Note: When both USB output ports are outputting currents of 2A,
the load of the batteries will be greatly increased. Some protected batteries
will activate their internal protection and cease the output process.
Therefore using NITECORE high performance Li-ion batteries is recommended.
Energy Saving Hibernation Function
If there is no operation and no input or output in 10 minutes, the F4 will
automatically activate the Energy Saving Hibernation Function to shut down the
screen. Hibernation can also be activated by long pressing the Power Button
for approx. 10 seconds. Short pressing the Power Button will wake up the
screen.
Anti-short Circuiting and Reverse Polarity Protection
If a battery is inserted with polarity reversed or short-circuited, the F4
will not charge it or display its information.
Battery Group Discharging Function
When used as a power bank with 4 fully charged batteries, the F4 will activate
the Battery Group Discharging Function to give priority to discharging the
batteries in Slot 1 and Slot 2. In this way, the batteries in Slot 3 and Slot
4 can be taken out for other uses with full power.
Over-Discharged Li-ion Battery Activation
The F4 is capable of activating over-discharged Li-ion batteries with a
protective circuit. After the battery insertion, the F4 will test and activate
the battery before charging. When it cannot be activated and is detected as
damaged, the screen will not display its information. Note: Please DO NOT
charge unprotected over-discharged Li-ion batteries, or it will result in fire
or even battery explosions.
Precautions
- The charger is restricted to charging/discharging 18650 Li-ion and IMR rechargeable batteries only. DO NOT use the charger with other types of batteries as this could result in battery explosion, cracking or leaking, causing property damage and/or personal injury.
- Moderate heat from this product is to be expected during the charging process, which is normal.
- Ambient Temperature of Usage: -10~40 (14~104); Temperature of Storage: -20~60 (-4~140)
- Carefully read all labels on the device to ensure batteries are installed correctly.
- Please connect this charger to power supplies with the input voltage stated in the specifications of the user manual. If the input voltage is too low or too high, it may lead to malfunctions, or even a fire.
- DO NOT charge batteries if there is any sign of faulty or short circuit.
- The charger is only to be used by adults above 18 years old. Children under this age must be supervised by an adult when using the charger.
- DO NOT leave the product unattended while it is connected to a power supply. Unplug the product at any sign of malfunction.
- DO NOT attempt to charge primary cells such as Zinc-Carbon, Lithium, CR123A, CR2, or any other unsupported chemistry due to risk of explosion and fire.
- DO NOT charge a damaged IMR battery as doing so may lead to charger short-circuit or even explosion.
- DO NOT charge or discharge any battery having evidence of leakage, expansion/ swelling, damaged outer wrapper or case, color-change or distortion.
- Use the original adapter and cord for power supply. To reduce the risk of damage to the power cord, ALWAYS pull by the connector rather than the cord. DO NOT operate the charger if it appears damaged in any way.
- DO NOT store or use the product in an environment where the temperature is extremely high / low or changes rapidly, or in a confined area with a high temperature.
- Store the device in ventilated areas. DO NOT use the device in moist environment and keep away from any combustible materials.
- Avoid any shock or impact to the device.
- DO NOT place any conductive or metal object in the device to avoid short circuiting and explosions.
- DO NOT overcharge or over-discharge the batteries. Please recharge the battery as soon as the power runs out.
- Unplug the device and remove all batteries when it is not in use.
- DO NOT disassemble or modify the device as doing so will render the product warranty invalid. Please refer to the warranty section in the manual for complete warranty information.
- DO NOT misuse in any way! Use for intended purpose and function only.
Disclaimer
This product is globally insured by Ping An Insurance (Group) Company of
China, Ltd. NITECORE shall not be held responsible or liable for any loss,
damage or claim of any kind incurred as a result of the failure to obey the
instructions provided in this user manual.
Warranty Details
Our authorized dealers and distributors are responsible for warranty service.
Should any problem covered under warranty occurs, customers can contact their
dealers or distributors in regards to their warranty claims, as long as the
product was purchased from an authorized dealer or distributor. NITECORE’s
Warranty is provided only for products purchased from an authorized source.
This applies to all NITECORE products. To be qualified for warranty, please
refer to the “IMPORTANT WARRANTY NOTICE” section on top to validate your
product. Any DOA / defective product can be exchanged for a replacement
through a local distributor/dealer within the 15 days of purchase. After 15
days, all defective / malfunctioning NITECORE® products can be repaired free
of charge for a period of 12 months (1 year) from the date of purchase. Beyond
12 months (1 year), a limited warranty applies, covering the cost of labor and
maintenance, but not the cost of accessories or replacement parts.
The warranty is nullified if the product(s) is/are:
- broken down, reconstructed and/or modified by unauthorized parties
- damaged from wrong operations (i.e. reverse polarity installation, installation of non-rechargeable batteries or failure to obey the warnings)
- damaged by batteries leakage.
For the latest information on NITECORE® products and services, please contact a local NITECORE® distributor or send an email to service@nitecore.com.
All images, text and statements specified herein this user manual are for reference purpose only. Should any discrepancy occur between this manual and information specified on www.nitecore.com, information on our official website shall prevail. SYSMAX Innovations Co., Ltd. reserves the rights to interpret and amend the content of this document at any time without prior notice.
SYSMAX Innovations Co., Ltd.
TEL: +86-20-83862000
FAX: +86-20-83882723
E-mail: info@nitecore.com
Web: www.nitecore.com
Address: Rm 2601-06, Central Tower, No.5 Xiancun Road, Tianhe District,
Guangzhou, 510623, Guangdong, China
Manufacturer: SYSMAX Power Technology, LLC
Address: B4 Happy Factory, 81 East Huahong Commercial Street, North Zhenxing
Road, Gaobu, Dongguan, China
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References
Read User Manual Online (PDF format)
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