MT40GT - Flashlight Nitecore - Free user manual and instructions

Product Type	Flashlight
Brand	Nitecore
Model	MT40GT
Light Source	CREE XP-L HI LED
Maximum Output	1000 lumens
Beam Distance	618 m
Peak Beam Intensity	95400 cd
Runtime (Turbo)	2 h 15 min
Runtime (Low)	31 h
Battery Options	2×18650 Li-ion or 4×CR123 primary lithium
Length	221.5 mm
Head Diameter	50 mm
Tail Diameter	25.4 mm
Weight (without battery)	245 g
Body Material	Aero grade aluminum alloy, HA III military grade hard anodized
Reflector	Aluminum, smooth and powerful beam
Lens	Toughened ultra-clear mineral glass with anti-reflective coating
Waterproof Rating	IPX-8, submersible to 2 m
Impact Resistance	1.5 m
Modes	Turbo (100% output) and user-defined mode (High-Mid-Low-SOS-Strobe)
Special Features	Intelligent memory, anti-rolling design, reverse polarity protection, detachable two-way clip, tactical ring
Accessories Included	Clip, tactical ring, lanyard, quality holster, spare rubber cap, spare O-ring
Maintenance	Lubricate threads with silicon-based lubricant every 6 months
Warranty	60 months (5 years) free repair; limited warranty after 5 years

Frequently Asked Questions - MT40GT Nitecore

How do I install the batteries in the Nitecore MT40GT?

Unscrew the tail cap counter-clockwise. Insert two 18650 batteries or four CR123 batteries with the positive poles facing the head. Screw the tail cap back on. The light will not operate if batteries are inserted incorrectly.

How do I switch between Turbo mode and User-Defined mode?

Tighten the flashlight head to enter Turbo mode (100% output). Loosen the head to enter User-Defined mode, which cycles through High-Mid-Low-SOS-Strobe when pressing the switch repeatedly.

Can I save a specific brightness level in User-Defined mode?

Yes. While in User-Defined mode, cycle to the desired setting (e.g., Low) and simply turn off the flashlight. The light will remember that setting the next time you use User-Defined mode.

What is the maximum output and runtime of the MT40GT?

Maximum output is 1000 lumens (Turbo mode). Runtime in Turbo is 2 hours 15 minutes; in Low mode it reaches up to 31 hours. Note: Turbo mode automatically reduces output after 5 minutes to prevent overheating.

Is the Nitecore MT40GT waterproof?

Yes, it has an IPX-8 rating, meaning it can be submerged in water up to 2 meters depth.

What batteries are compatible with the MT40GT?

It accepts two 18650 rechargeable Li-ion batteries (3.7V) or four CR123 primary lithium batteries (3V). Rechargeable RCR123 (3.7V) are also compatible. Nitecore recommends using quality Nitecore batteries for best performance.

How do I use the momentary illumination function?

In Turbo mode with the light off, partially press the tail switch to activate momentary on. Release to turn off. This is useful for signaling or tactical applications.

Does the MT40GT have strobe and SOS modes?

Yes, these are available in the User-Defined mode. When cycling through settings, you will encounter Strobe and SOS after the brightness levels.

How should I maintain my flashlight?

Every 6 months, clean the threads with a clean cloth and apply a thin coating of silicon-based lubricant to ensure smooth operation and maintain waterproofing.

What does the warranty cover for the Nitecore MT40GT?

Nitecore offers a 60-month (5-year) free repair warranty from date of purchase for defective products. After 5 years, a limited warranty covers labor but not accessories or replacement parts. The warranty is void if the product has been modified, misused, or damaged by battery leakage.

USER MANUAL MT40GT Nitecore

The All-Round Flashlight Expert

MT40GT

User Manual

Features

• Utilizes a customized CREE XP-L HI LED
• Maximum output of up to 1000 lumens
• High efficiency current circuit board
• Maximum runtime of up to 31 hours
- Two rapid switching modes suit various user requirements
- User-defined mode allows for customized brightness levels and a multitude of functions

• Intelligent memory functions

- Anti-rolling design

- Reverse polarity protection

- Broad voltage drive circuit, compatible with rechargeable and non-rechargeable Li-ion batteries.

- Toughened ultra-clear mineral glass with anti-reflective coating

• Aluminum reflector ensures a smooth and powerful beam

• Aero grade aluminum alloy

• HA III Military grade hard anodized

- Detachable two-way anti-rolling clip

- Purpose-made rhombic knurling for better grip

- IPX-8 standard waterproof (submersible to two meters)

Dimensions

Length: 8.72" (221.5mm)

Head Diameter: 1.97"(50mm)

Tail Diameter: 1"(25.4mm)

Weight: 8.64oz (245g)(without battery)

Accessories

Clip, tactical ring, lanyard, quality holster, spare rubber cap, spare O-ring

Battery Options

	TYPE	Nominal voltage	Compatible
Primary Lithium battery	CR123	3V	Y (Recommended)
18650 Rechargeable Li-ion battery	18650	3.7V	Y (Recommended)
Rechargeable Li-ion battery	RCR123	3.7V	Y

Brightness & Runtime

FL 1 STANDARD TURBO HIGH MID LOW
	1000LUMENS	500LUMENS	250LUMENS	90LUMENS
	2h15min	4h15 min	9h30 min	31h
	1h30min	2h45 min	6h30 min	18h30min
	618m (Beam Distance)
	95400cd (Peak Beam Intensity)
	1.5m (Impact Resistant)
	IPX-8, 2m (Waterproof AND Submersible)

NOTICE:

Stated data has been measured according to the international flashlight testing standards ANSI/NEMA FL1 using two quality NITECORE 18650 (3.7V 3400mAh) batteries or four Nitecore CR123 (3V 1700mAh) batteries under laboratory conditions. The data may vary due to individual usage habits and environmental conditions.

Operating Instructions

Battery Installation

1. Unscrew the tail cap in a counter-clockwise direction.
2. Insert two 18650 batteries or four CR123 batteries with the positive poles pointing forward (toward the light head).

WARNING

Ensure batteries are inserted with the positive (+) ends pointing to the head. The MT40GT will not operate with incorrectly inserted batteries.

Switching ON/OFF

Switch ON: Press the switch on the tailcap until a "click" is heard. Switch OFF: Press the switch again until a "click" is heard.

Mode Switching

The Nitecore MT40GT has two modes: Turbo and user-defined. These two modes can be changed by simply tightening and loosening the flashlight head. Turbo provides 100% output while user-defined mode contains five selectable sub-settings.

Turbo Mode

To enter Turbo mode, tighten the head and press the switch. While in this mode, momentary illumination can be achieved by switching off the flashlight and then pressing the switch partway down. Momentary illumination can be used as a flashing signal indicator or applied to various tactical applications. Note: After 5 minutes' use of turbo mode, the flashlight will lower its output automatically to prevent overheating and ensure the battery runtime.

User-Defined Mode

To enter user-defined mode, simply loosen the head. In this mode, pressing the switch all the way down/partway down repeatedly will cycle through brightness levels and other functions in the following order: "High-Mid-Low- SOS-Strobe". To select and save a desired mode, simply turn off the flashlight when that mode is being displayed.

Tips: Make NITECORE MT40GT your perfect multi-task flashlight. NITECORE MT40GT flashlights essentially have two modes: Turbo mode (100% output) and user-defined mode. Turbo mode is accessed by tightening the flashlight head. User-defined mode is accessed by loosening the head and rapidly pressing the on/off switch to cycle through modes (strobe, low, medium and high). A given mode can be saved by simply turning off the light while in that mode. Real-world examples include: When used around the home, loosen the head and select low output in custom mode. The same flashlight could then be taken out and used a law-enforcement duty light, with user-defined mode set in strobe, making it easy to alternate between turbo mode and strobe with a simple twist of the flashlight head.

Maintenance

Every 6 months, threads should be wiped with a clean cloth followed by a thin coating of silicon-based lubricant.

Warranty Service

All NITECORE® products are warranted for quality. Any defective / malfunctioning NITECORE® product can be repaired free of charge for a period of 60 months (5 years) from the date of purchase. Beyond 60 months (5 years), a limited warranty applies, covering the cost of labor and maintenance, but not the cost of accessories or replacement parts.

The warranty is nullified in all of the following situations:

1. The product(s) is/are broken down, reconstructed and/or modified by unauthorized parties.
2. The product(s) is/are damaged through improper use.
3. The product(s) is/are damaged by leakage of batteries.
   For the latest information on NITECORE® products and services, please contact a local NITECORE® distributor or send an email to [e-mail]

※All images, text and statements specified herein this user manual are for reference purpose only. Should any discrepancy occurs between this manual and information specified on www.nitecore.com, information on our official website shall prevail. Sysmax Industry Co., Ltd. reserves the rights to interpret and amend the content of this document at any time without prior notice.

SYSMAX Ind.

SYSMAX Industry Co., Ltd.

TEL: [phone]

FAX: [phone]

E-mail: [e-mail]

Web: www.nitecore.com

Address: Rm1401-03, Glorious Tower, 850 East Dongfeng Road, Guangzhou, China 510600

20150831