Features
- Utilizes a NITECORE UHi 40 LED with a max output of 3,300 lumens.
- Max peak beam intensity of 63,500cd and max throw of 505 meters.
- An optical system combined with crystal coating and "Precision Digital Optics Technology" (PDOT).
- Powered by a 21700 i Series Battery (NL2153HP 5,300mAh) for up to 45 hours of runtime.
- Intelligent Li-ion battery charging circuit with a USB-C port.
- Highly efficient constant current circuit provides a stable output.
- Dual tail switches enable intuitive operations for tactical applications.
- 5 brightness levels and 3 special modes available.
- STROBE Mode uses randomly changing frequencies for stronger dizzying effects.
- Power indicator beneath the switches indicates the remaining battery power.
- Power indicator can display the battery voltage (±0.1V).
- Intelligent sensor protection function.
- Incorporated Advanced Temperature Regulation (ATR) module (Patent No. ZL201510534543.6).
- Optical lenses with double-sided scratch resistant coating.
- Constructed from aero grade aluminum alloy.
- HA III military grade hard-anodized finish.
- Waterproof and dustproof rating in accordance with IP68 (2 meters submersible).
- Impact resistant to 1 meter.
Specifications
- Length: 148.5mm (5.85")
- Head Diameter: 40mm (1.57")
- Tube Diameter: 25.4mm (1.00")
- Tail Diameter: 27.2mm (1.07")
- Weight: 160g (5.64oz) (Battery Excluded)
Accessories
NITECORE NL2153HP 5,300mAh Li-ion Battery, USB-C Charging Cable, Clip, Lanyard, Spare O-ring, Holster
Battery Option
The MH12 Pro is only compatible with NITECORE 21700 i Series Batteries with an output of 15A and above.
Technical Data
| Mode | Output | Runtime | Throw | Peak Beam Intensity |
|---|---|---|---|---|
| TURBO | 3,300 Lumens | 30 mins* | 505 meters | 63,500cd |
| HIGH | 1,200 Lumens | 3 hours 15 mins | 310 meters | 24,000cd |
| MID | 300 Lumens | 7 hours 30 mins | 150 meters | 5,600cd |
| LOW | 50 Lumens | 45 hours | 60 meters | 900cd |
| ULTRA LOW | 1 Lumen | 650 hours | 4 meters | 4cd |
| STROBE | 3,300 Lumens | - | - | - |
| BEACON | 3,300 Lumens | - | - | - |
| SOS | 3,300 Lumens | - | - | - |
* The runtime for TURBO Mode is tested under laboratory conditions. The data is calculated based on the 21700 Li-ion battery (5,300mAh) under laboratory conditions. The data may vary in real world usage due to different battery usage or environmental factors.
Warranty Service
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 60 months from the date of purchase. Beyond 60 months, 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 broken down, reconstructed and/or modified by unauthorized parties.
- The product(s) is damaged due to improper usage.
- The product(s) is 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 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, Sysmax Innovations Co., Ltd. reserves the right to interpret and amend the content of this document at any time without prior notice.
Operation Instructions
Battery Installation / Removal
As illustrated in the diagram, unscrew the tail cap, insert the NITECORE 21700 i Series Battery with the positive pole pointing towards the head, and then screw the tail cap on.
Warning:
- Ensure the battery is inserted with the positive (+) end pointing towards the head. The product will not work if the battery is inserted incorrectly.
- When the power indicator is flashing quickly, it indicates that the battery voltage is low. Please charge the battery as soon as possible.
(Diagram Description: An illustration shows the MH12 Pro flashlight with its tail cap unscrewed, revealing the battery compartment. An arrow indicates inserting the 21700 i Series Battery with the positive end towards the flashlight head.)
Charging Function
As illustrated in the diagram, unscrew the charging port cover and connect the flashlight to an external power source (e.g., a USB adapter, a computer, or other USB charging devices) via the USB-C charging cable to begin the charging process.
- During the charging process, the power indicator will flash slowly.
- When the battery is fully charged, the power indicator will turn solid.
- When the flashlight is connected to a power source, it will automatically access the LOW level.
(Diagram Description: An illustration shows the MH12 Pro flashlight with its USB-C charging port exposed and a USB-C cable connected to it, indicating the charging process.)
Tactical Momentary Illumination
Half press and hold the Tail Switch to turn on the light momentarily. Release to turn it off.
On / Off
On: When the light is off, full press the Tail Switch until a click sound is heard to turn it on.
Off: When the light is on, full press the Tail Switch until a click sound is heard to turn it off.
User Mode Selection
The MH12 Pro provides 2 user modes: Daily Mode and Tactical Mode. The flashlight comes with Daily Mode as the default setting.
Daily Mode: When the light is on, short press the Mode Button to cycle through the following brightness levels: ULTRA LOW - LOW - MID - HIGH - TURBO. The flashlight has memory function. When turned on again, it will access the previously memorized brightness level.
Tactical Mode: When the light is on, short press the Mode Button to cycle through the following brightness levels: TURBO - HIGH - MID - LOW - ULTRA LOW. The flashlight has memory function. When turned on again, it will access the previously memorized brightness level.
To Select a Desired User Mode:
- Ensure the light is off.
- Loosen the tail cap.
- Press and hold the Mode Button on the head while simultaneously tightening the tail cap.
- Once the tail cap is tightened, the primary white indicator beneath the switches will flash once to indicate Daily Mode, or flash twice to indicate Tactical Mode.
- Release the Mode Button.
Brightness Levels
When the light is on, short press the Mode Button to cycle through the following brightness levels: ULTRA LOW - LOW - MID - HIGH - TURBO.
ULTRA LOW Activation
When the light is off, press and hold the Mode Button to directly access ULTRA LOW.
Special Modes (STROBE / BEACON / SOS)
When the light is off, triple press the Tail Switch to access STROBE Mode. When STROBE Mode is on, short press the Mode Button to cycle through BEACON - SOS - STROBE.
When the light is on, triple press the Mode Button to access STROBE Mode. When STROBE Mode is on, short press the Mode Button to cycle through BEACON - SOS - STROBE.
Short press the Tail Switch to exit special modes and turn off the light.
Power Indication
When the light is off, short press the Mode Button, and the power indicator beneath the switches will flash to indicate the remaining battery power:
- 3 flashes: Remaining power is above 50%.
- 2 flashes: Remaining power is below 50%.
- 1 flash: Remaining power is below 10%.
(Diagram Description: An illustration shows the flashlight's power indicator. It depicts three states: 3 flashes for >50% power, 2 flashes for <50% power, and 1 flash for <10% power.)
When the light is on, the power indicator will display the battery voltage (±0.1V) for 3 seconds. For example, when the battery voltage is at 4.2V, the power indicator will flash 4 times, followed by a 1.5-second pause and 2 more flashes. Different voltages represent the corresponding remaining battery power levels:
| Status of Indicator | Power Level |
|---|---|
| 3 Flashes | >50% |
| 2 Flashes | <50% |
| 1 Flash | <10% |
The power indicator will flash quickly when the battery voltage is below 3.4V, indicating that the battery should be recharged.
Sensor Protection Function
The MH12 Pro is equipped with a sensor protection function. When the light is on, if there is an obstruction in front of the lens (e.g., in a pocket or backpack), the flashlight will automatically reduce its brightness level to prevent overheating and prolong its lifespan. The light will resume its previous brightness level once the obstruction is removed.
When the light is on, if the sensor protection function is triggered, the power indicator will flash quickly to remind the user. The sensor protection function is only available for TURBO and HIGH levels. The sensor protection function will be automatically disabled when the light is in STROBE, BEACON, or SOS Mode.
It is normal for the light to have a slight deviation in the detection distance when the sensor protection function is triggered due to the different colors of the obstructions.
It is normal for the light to have a slight deviation in the detection distance when the sensor protection function is triggered due to the different colors of the obstructions. The detection distance is approximately 5cm (1.97").
ATR (Advanced Temperature Regulation)
The integrated ATR technology regulates the output of the MH12 Pro according to the working condition and ambient environment to maintain the optimal performance.
Warnings
- DO NOT direct the light at bare eyes.
- DO NOT immerse the product into water when the charging port is exposed.
- Please charge the battery before first use.
- Please recharge the product every 3 months when left unused for a prolonged time.
- The product contains small assembly parts. Please keep it away from children to avoid choking hazard or injury.
- DO NOT disassemble, modify or reconstruct the product, otherwise the warranty will be nullified, and the product might be damaged.
- The product is only compatible with NITECORE 21700 i Series Batteries with an output of 15A and above.
Maintenance
Every 6 months, threads should be wiped with a clean cloth followed by a thin coating of silicon-based lubricant.
