NITECORE NC-EDC31 Flash Light User Manual

Use the product in a standard handheld manner to prevent accidents in case of failure.
Avoid submerging the product into any liquid when hot to prevent damage.

Turn off the product in enclosed or flammable environments and activate Full Lockout Mode when not in use for extended periods.
Recharge the product every 6 months when left unused for a prolonged time.

Do not disassemble or modify the product to avoid damage and warranty invalidation.

Charging Instructions:

To charge the product, follow these steps:

Insert the USB-C Charging Cable into the USB-C Charging Port on the product.

Connect the other end of the cable to a power source.
Monitor the power indicators to know when the product is fully charged.

Frequently Asked Questions (FAQ)

Q: How often should I recharge the product?
A: It is recommended to recharge the product every 6 months when left unused for an extended period to maintain battery health.

Q: Can children use this product?
A: No, this product is intended for use by adults aged 18 and over. Keep out of reach of children.

IMPORTANT

Thanks for purchasing NITECORE!
Please read this manual carefully before using the product and follow the instructions.
This manual contains important safety information and operating instructions. Please keep it for future reference.
In case of updates, please refer to the latest version available on the official website.

Warning

This product is intended for use by adults aged 18 and over. Please keep this product out of the reach of children.
CAUTION! Possible dangerous radiation! DO NOT stare directly into the light beam or shine the light directly into the eyes of anyone!
The product will generate massive heat during prolonged operation. Please exercise caution during use. It is recommended not to use high brightness levels for extended periods to prevent burns and product damage.
DO NOT cover or place objects near the head of the product, as this may cause damage to the product or accidents due to high temperatures.
DO NOT use the product to illuminate flammable or explosive materials, as the high heat may lead to combustion or explosion.
Please use the product in a standard handheld manner to avoid accidents in the event of product failure.
DO NOT submerge the product into any liquid when it is hot. Doing so may cause irreparable damage to the light due to the difference of air pressure inside and outside of the tube.
When the product is placed in an enclosed or flammable environment such as a pocket or backpack, or when it is left unused for an extended period, please turn off the product and activate the Full Lockout Mode to avoid accidental activation and dangers caused by excessive heat.
DO NOT expose the product to temperatures above 60°C (140°F) for a prolonged time, as this poses a risk of battery explosion or combustion.
Please recharge the product every 6 months when left unused for a prolonged time.
DO NOT disassemble or modify this product as doing so will cause damage to it and render the product warranty invalid. Please refer to the warranty section in the manual for complete warranty information.

Technical Data

FL1 STANDARD	LUMIN SHIELD™(Floodlight)	SEARCH(Spotlight)	HIGH	MID	LOW	ULTRALOW
	3,500 Lumens	1,500 Lumens	1,100 Lumens	300 Lumens	70 Lumens	5 Lumens
	—	—	3h 30min	5h	24h	57h
	330m	380m	190m	173m	85m	20m
	28,800cd	35,630cd	9,390cd	7,489cd	1,826cd	109cd
	2m
	IP68, 2m (Waterproof and Submersible)

Note: The stated data is measured in accordance with the international flashlight testing standards ANSI/PLATO FL 1-2019 using the built-in Li-ion battery (3,800mAh). The data may vary in real world use due to different environmental conditions.

Features

Utilizes a 9-core UHi 20 MAX LED with a max output of 3,500 lumens
Max peak beam intensity of 35,630cd and max throw of 380 meters

4 brightness levels to cycle through; SEARCH and LUMIN SHIELD™ available
Powered by a built-in 3,800mAh Li-ion battery to provide a runtime up to 57 hours
Lockout Switch (Rapid Lock™) available for Half Lockout Mode and Full Lockout Mode

A micro-textured reflector offers long range and wide angle lighting
Power indicators indicate the remaining battery power
Intelligent Li-ion battery charging circuit with a USB-C charging port

Advanced Power Cut-Off (APC) technology for an ultralow standby power consumption
Highly efficient constant current circuit provides a stable output
Incorporated Advanced Temperature Regulation (ATR) module (Patent No. ZL201510534543.6)

Optical lenses with double-sided scratch resistant coating
Constructed from aluminum alloy with HA III military grade hard-anodized finish
Waterproof and dustproof rating in accordance with IP68 (2 meters submersible)

Impact resistant to 2 meters

Battery Safety
Improper use of devices with built-in Li-ion batteries may result in severe battery damage or safety hazards such as combustion or explosion. DO NOT use the device if it is damaged. DO NOT disassemble, puncture, cut, crush, or incinerate the device. If any leakage or abnormal odor is noticed, stop using the device immediately. Dispose of the device/batteries in accordance with applicable local laws and regulations.

Warranty Details

All NITECORE® products are warranted for quality. Any DOA / defective product can be exchanged for a replacement through a local distributor/dealer within 15 days of purchase. After that, all defective / malfunctioning NITECORE® products can be repaired free of charge within 24 months from the date of purchase. Beyond 24 months, a limited warranty applies, covering the cost of labor and maintenance, but not the cost of accessories or replacement parts.

The warranty will be nullified if

The product(s) is/are broken down, reconstructed and/or modified by unauthorized parties;
The product(s) is/are damaged due to improper use.

For the latest information on NITECORE® products and services, please contact a local NITECORE® distributor or send an email to service@nitecore.com

Specifications

Length: 113.2mm (4.46″)

Head Diameter: 23.0mm (0.91″)
Tube Diameter: 22.6mm (0.89″)
Weight: 100g (3.53 oz) (Clip Included)

Accessories
Lanyard, USB-C Charging Cable, Clip

Product Overview

Charging Function

Charging Function
The EDC31 is equipped with an intelligent charging system. Please charge the battery before the first use. Use the USB cable to connect an external power supply (e.g. an adapter, a power bank or other charging devices) to the USB port to begin the charging process.

During the charging process, the green power indicators will gradually transition from flashingto a steady light to display the battery level.
When the battery is fully charged, the EDC31 will cease the charging process and the power indicators will become steadily turned on to inform the user.

The lighting function is available during the charging process (LUMIN SHIELD™ and SEARCH excluded).
The charging time is approx. 1 hour 45 minutes. (Charged via the 5V/2A adapter)

Tactical Momentary Illumination

When the light is off, half press and hold the Tail Button to access SEARCH. Release to turn it off.
When the light is off, full press and hold the Tail Button to access LUMIN SHIELD™. Release to turn it off.

On / Off

On: When the light is off, full press the Tail Button to turn it on.
Off: When the light is on, full press the Tail Button to turn it off.

Brightness Levels
When the light is on, half press the Tail Button to cycle through the following brightness levels: ULTRALOW – LOW – MID – HIGH. The EDC31 is designed with a memory function. When reactivated, it will automatically access the previously memorized brightness level.

Direct Access to SEARCH
When the light is on / off, half press and hold the Tail Button to directly access SEARCH. Release to return to the previous status.

Direct Access to LUMIN SHIELD™
When the light is on / off, full press and hold the Tail Button to directly access LUMIN SHIELD™. Release to return to the previous status.

Lockout / Unlock
The EDC31 has two lockout modes (Half Lockout Mode and Full Lockout Mode).

Half Lockout Mode:

When the light is on / off, slide the Lockout Switch (Rapid Lock™) up while half / full pressing and holding the Tail Button to access Half Lockout Mode. The lock icon can be seen below the Lockout Switch (Rapid Lock™).
In Half Lockout Mode, half press and hold the Tail Button to access SEARCH; full press and hold the Tail Button to access LUMIN SHIELD™.

Note: To access the Full Lockout Mode, slide down the Lockout Switch (Rapid Lock™) to unlock the flashlight first, then turn on the flashlight followed by sliding the Lockout Switch (Rapid Lock™) up. The light will exit the Half Lockout Mode and directly access the Full Lockout Mode.

Full Lockout Mode (Default Setting)
When the light is on / off, slide the Lockout Switch (Rapid Lock™) up to access Full Lockout Mode. The lock icon can be seen below the Lockout Switch (Rapid Lock™), indicating that the Tail Button is unavailable to activate the flashlight.

Unlock:
In either Lockout Mode, slide down the Lockout Switch (Rapid Lock™) to exit Lockout Mode.

ATR (Advanced Temperature Regulation)
The integrated ATR technology regulates the output of the EDC31 according to the working condition and ambient environment to maintain the optimal performance.

Power Indication

When the light is on, the Power Indicators will become steadily turned on to indicate the remaining battery power.
Half press the Tail Button and the Power Indicators will be on to indicate the remaining battery power (lockout modes excluded).

Note: The battery should be recharged when the output appears to be dim or the flashlight becomes unresponsive due to low power.

Status of Indicators	Power Level
4 Constant-on	75% – 100%
3 Constant-on	50% – 75%
2 Constant-on	25% – 50%
1 Constant-on	0% – 25% (Please charge the product as soon as possible)

Sensor Protection Function

When the flashlight is off, if there is an obstruction near the light outlet and the flashlight accidentally accesses HIGH, the flashlight brightness will automatically decrease to 300 lumens to prevent overheating and prolong the lifespan of the flashlight. Once the obstruction is removed, the flashlight will return to the previous brightness level.

Off: The protective sensor is automatically enabled when the flashlight is powered on. Once activated, the sensor can be temporarily disabled by briefly half pressing the Tail Button.

Note:

The protective sensor only detects obstacles when the flashlight is directly powered on to HIGH. If the light is already on, the sensor remains disabled until the light is turned off. Covering the light outlet after the light is on will not activate the sensor protection.
It is important to keep the front lens clean to ensure that the built-in sensor functions properly to achieve its optimal performance.