MT20A - Flashlight Nitecore - Free user manual and instructions

Product Type	Flashlight
Model	MT20A
Brand	Nitecore
Dimensions	Approximately 150 mm (length) x 25 mm (head diameter)
Weight	Approximately 100 g (including batteries)
Power Source	2 x AA batteries (alkaline or rechargeable NiMH)
Max Output	200 lumens
Beam Distance	Up to 80 meters
Modes	Turbo, High, Mid, Low, Strobe, SOS
Water Resistance	IPX8 (submersible up to 2 meters)
Drop Resistance	1.5 meters
Lens	Optical lens with anti-reflective coating
Switch	Tail switch for momentary-on and mode switching
Body Material	Aluminum alloy with hard-anodized finish
Maintenance	Clean with dry cloth; store in a cool, dry place
Safety	Do not look directly into the beam; keep away from children
Spare Parts	Replacement O-rings, tail cap, pocket clip
Warranty	5 years limited warranty

Frequently Asked Questions - MT20A Nitecore

What type of batteries does the Nitecore MT20A use?

The MT20A uses 2 AA batteries. Both alkaline and rechargeable NiMH batteries are compatible.

How do I turn on the flashlight?

Press the tail switch firmly for momentary on; click fully for constant on. Half-press to cycle through modes.

What are the available brightness modes?

The MT20A has 5 brightness modes (Turbo, High, Mid, Low) plus Strobe and SOS. Mode cycling is done by half-pressing the switch.

Is the flashlight waterproof?

Yes, it has an IPX8 rating, meaning it can be submerged up to 2 meters underwater.

How do I change the batteries?

Unscrew the tail cap, remove old batteries, insert new ones with correct polarity (positive towards head), and screw the tail cap back on.

What is the maximum output of the MT20A?

The maximum output is 200 lumens, with a beam distance of up to 80 meters.

Can I use rechargeable batteries?

Yes, NiMH rechargeable AA batteries work well. Avoid using Li-ion batteries unless specified.

How do I clean the flashlight?

Wipe the exterior with a soft, dry cloth. Clean the lens gently. Do not use abrasive cleaners or solvents.

Is there a lockout function?

The MT20A does not have a dedicated lockout, but you can loosen the tail cap slightly to prevent accidental activation.

What is the warranty period?

Nitecore offers a 5-year limited warranty against defects in materials and workmanship.

USER MANUAL MT20A Nitecore

The All-Round Flashlight Expert

MT20A

User Manual

Features

• Utilizes a CREE XP-G2 R5 LED
• Maximum output of 360 lumens
• Integrated “Precision Digital Optics Technology” provides extreme reflector performance
  Boasts a peak beam intensity of 6,500 cd and a throw distance up to 160 meters
  • Tail switch designed for tactical applications
• Side switches for selecting brightness levels or modes
• Features intelligent memory effect
• Red LED provides constant/flashing illumination
• Displays battery voltage with red light (accurate to 0.1V)
  • High efficiency constant current circuit enables maximum runtime of 180 hours
• Direct access to turbo/red light mode
• Reverse polarity protection prevents damage from incorrectly inserted batteries
• Stainless steel titanium-plated two-way clip
• Toughened ultra-clear mineral glass with anti-reflective coating
• Robust HAIII military grade hard-anodized
• Waterproof in accordance with IPX-8 (two-meter submersible)
  • Tail stand capability

Dimensions

Length: 6.18" (156.9mm)

Head Diameter: 1" (25.4mm)

Tail Diameter: 0.85"(21.5mm)

Weight: 2.65oz (75g)(without battery)

Accessories

Quality holster, clip, lanyard, spare tail cap cover, spare O-ring

Battery Options

Battery Options
	Type	Nominal voltage	Compatible
Primary AA battery	AA	1.5V	Y (Recommended)
Rechargeable AA battery	AA	1.2V	Y (Recommended)
Primary AA Lithium battery	L91	1.5V	Y (Recommended)
Primary LiFePO4 battery	14500	3.2V	N (Banned)
Rechargeable Li-ion battery	14500	3.7V	N (Banned)

Brightness & Runtime

FL 1 STANDARD	TURBO	HIGH	MID	LOW	LOWER
	360LUMENS	240LUMENS	120LUMENS	17LUMENS	1LUMEN
	1h45min	2 h15min	5h45min	24h	180h
	160m (Beam Distance)
	6500cd (Peak Beam Intensity)
	1.5m (Impact Resistant)
	IPX-8, 2m (Waterproof and Submersible)

NOTICE:

The stated data has been measured in accordance with the international flashlight testing standards ANSI/NEMA FL1, using two high quality AA rechargeable batteries (1.2V, 2500mAh) under laboratory conditions. The data may vary in real-world use due to different battery usage or environmental conditions.

Operating Instructions

Battery Installation

Insert two AA batteries as illustrated WARNING:

Ensure batteries are inserted with the positive (+) end pointing towards the head. The MT20A will not be operational with incorrectly inserted batteries.

Momentary Illumination

Momentary illumination can be achieved by switching the flashlight off and then half pressing and holding the tail switch. Release switch to turn the light off.

Switching ON/OFF

Switch ON: Press the button on the tailcap all the way down until a "click" is heard.
Switch OFF: Press the button on the tailcap all the way down until a "click" is heard.
Standby Mode:

When power is off, press both side switches 📋 and the button on the tailcap simultaneously to activate the red power indicator to flash and indicate battery voltage. Three seconds after electrical voltage is reported, the MT20A enters standby mode where the indicator flashes once every three seconds. In standby mode, the MT20A will operate for approximately 60 days with the indicator on.

Brightness Levels

When the MT20A is switched on, press the step-up switch repeatedly to switch among the following brightness levels: red beacon-red light-ultralow-low-medium-high-turbo. The MT20A has memory effect. When it is switched on, the MT20A will enter the brightness level last used.

When the MT20A is switched on, press the step-down switch ☐ repeatedly to level down its brightness until it reaches red beacon mode, after which there is no cycling back to other brightness levels.

Direct Access to Red Light Mode:

When the MT20A is switched on, press and hold the step-down switch ☐ for over one second to access red light mode; OR:

When the MT20A is switched off, press and hold the step-down switch ☐ while the tailcap button is being held simultaneously to access the red light mode.

Direct Access to Turbo:

When the MT20A is switched on, press and hold the step-up switch for over one second to access turbo output (360 lumens); OR: When the MT20A is switched off, press and hold the step-up switch and press the button on the tailcap to access turbo output (360 lumens).

Note: After three minutes' using of turbo mode, the flashlight will lower its output automatically for preventing overheating, and efficiently ensure the battery runtime.

Special Modes (Strobe/Location Beacon/SOS)

With the light switched on, press both side switches to enter strobe mode. When in strobe mode, press both side switches again to cycle through Location Beacon, SOS, and Strobe modes. To exit and resume the brightness level last used, simply press the step-up for step-down switch. The MT20A has memory effect in strobe mode. If it is turned off in strobe mode, it will enter strobe mode immediately when switched on again.

Power Tips

With the light switched off, press both side switches and the button on the tailcap to activate the red power indicator to blink and indicate battery voltage (accurate to ±0.1V ). For example, when battery voltage is at 2.4V, the red power indicator will blink 2 times, followed by a one second pause and another 4 blinks. Different voltages represent the corresponding remaining battery power levels.

Changing / Charging Battery

Batteries should be replaced or recharged when output appears to be dim or the flashlight becomes unresponsive.

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.

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