Flashlight Reviews

NiteCore Extreme

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NiteCore Extreme is single CR123 battery based flashlight from EDGE Tactical Light Co. Ltd. NiteCore Extreme belongs to Infinity Tactical series of flashlights from EDGETac. NiteCore Extreme is specially designed for Law Enforcement personal and for self defense. The NiteCore Extreme has two light operating levels both of which are are configurable through light programming and are memorized. LED used in NiteCore Extreme is high efficiency Cree 7090 XR-E Premium Q5 binned WC tint LED. Reflector of NiteCore Extreme is built from solid Aluminium with Light Orange Peel (LOP) reflector finish. The Glass lens in front is anti-reflective impact resistant lens with Dual-Coating (TM). Dual-Coating is the specialty diamond coating on outer surface of the lens over the AR coating. The DI Extreme uses digitally regulated electronic drive circuit along with Microcontroller (µC) based programming unit. Brightness levels are controlled by turning the head. The body of NiteCore Extreme is built of military grade Aluminium alloy. Light is coated inside out with military spec type III hard anodized finish that is highly suitable for rough usage. HAIII anodizing makes NiteCore Extreme durable and protects from normal wear and tear. The NiteCore Extreme comes pre installed with removable pocket clip on battery tube. The tactical forward type click switch located at the tail cap end has black color rubber boot. The advantage of tactical switch is it allows momentary operation. Battery contact spring at the tail cap switch end is gold plated ensuring very good connectivity with the battery. The positive contact on head is solid Aluminium. There are O-Ring seals at various places for waterproofing, NiteCore Extreme meets IPX-8 Waterproof Standard. The Overall build quality of NiteCore Extreme is superb. DI Extreme meets US MIL - STD - 810 F standard resistance to impact by dropping. NiteCore Extreme comes in nice cardboard box packaging along with accessories.

Light Features:
  • US MIL - STD - 810 F standard resistance to impact by dropping
  • Meets the IPX - 8 standard waterproof specifications
  • Premium Type III hard-anodized finish
  • Dual-Coating based AR coated glass lens
  • Solid Aluminium LOP reflector
  • Cree 7090 XR-E Premium Q5 binned WC tint LED
  • Digitally controlled, regulated drive circuit
  • Can operate either on standard CR123 or on RCR123 battery
  • Two programmable light levels
  • Forward type, tactical click switch
Light Operation & Output:
Light Operation: Tactical click switch with momentary mode. For Switching ON / OFF use tail cap switch. Click once to switch on, click again to switch off. For momentary operation soft press the switch.

High Mode: is achieved by fully tightening the head. In default factory setting, the light output is maximum in this mode. Typically 190 Lumens on CR123 battery.
Low Mode: Loosen the head for low mode for low light output. Low mode is in deed low light output. Typically less than 10 Lumens.

Below is the chart showing total output levels for partially used standard CR123 battery and fully charged AW RCR123 battery.

NiteCore Extreme
Level CR123 AW RCR123
High 1596 1813
Low 42 66

Light Info:
General Info
    Light Model Extreme TM
    Manufacturer NiteCore
    Review Page & Image
 Extreme TM
Extreme TM
    Country  China
    Review Date 2008-05-22
    Review Update 2008-05-22
Light Vitals
    Length 93 mm
    Width / Bezel Diameter 26 mm
    Width / Tube Diameter 21 mm
    Height (if applicable)  mm
    Weight (without battery) 63 gm
Light Source
    LED Format Power LED
    Number of LEDs 1
    LED Name Cree XR - E
    LED Power 3  Watts
Light Management
    Lens Material Clear Glass
    Lens Coating (if any) Diamond Double AR Coated
    Lens Transperency (typical) 93
    Lumen Management Reflector
    Material Aluminium Metal LOP
    Beam Type Mostly Throw with good side spill
Power Management
    Converter Type Buck Boost
    Properties Regulated, Advanced Micro Controller (uC)
    Features Advanced User Interface
Batteries Supported, Output & Runtime
    Battery Size
    Nominal Voltage
    # Used
    Total Output
    Runtime to 75%
    Runtime to 50%
    Runtime to 25%
LiMnO2  Li-Ion  
Switch Options
    Switch Type
    Switch Properties
Forward Click
Body Material Options
Type III Hard Anodized
Light Rating
90 90
    Build Quality
80 80
80 80
85 85
75 75
65 65
    Bang for buck
70 70
    Overall Rating
In-Depth Review & Pictures:
Packaging: NiteCore Extreme comes packaged card board box. Inside the main card board box, the light is sandwiched in between two foam beds. Operating manual, accessories are placed at the bottom of the box.

Inside the box showing NiteCore Extreme flashlight

Other contents and accessories include warranty card with bar code, operators manual for NiteCore Extreme, Two additional O-Rings, one tail cap switch boot, two additional tail cap switches and tool to remove pre installed pocket clip.

Size Comparison: Pictured below From L to R: Fenix TK10, NiteCore Extreme and NovaTac 120T. DI Extreme is slightly bigger than NovaTac 120T.

Another comparison From L to R: CR123 Battery, NiteCore Extreme and AA Battery.

Bezel Comparison: On the left is NovaTac 120T, where as on right is NiteCore Extreme. The reflector diameter is about 21mm. The beam pattern is very good hotspot with good side spill.

Bezel: Let's have a closer look at the bezel of NiteCore Extreme. The premium binned Cree XR-E LED is aligned perfectly in center. The reflector in NiteCore Extreme built from solid Aluminium. The reflector has Light Orange Peel (LOP) finish ensures perfect beam. Beam pattern for DI Extreme is mostly throw with good side spill free from rings and any artifacts.

Perfectly Centered LED in NiteCore Extreme

Body: NiteCore Extreme is built from military grade Aluminium. Body is sandblasted to give a matt finish and has black color military specification hard coat type III anodizing for protection from wear and tear. The built quality of NiteCore Extreme is excellent. The tail cap and installed pocket clip prevent light roll off.

Battery tube has diamond knurling like grooves that provide good grip. Here is a 270 view of NiteCore Extreme

Tail cap has means of attaching lanyard. Overall the construction of NiteCore Extreme is fairly strong.

Components: NiteCore Extreme consists of two main components, head, battery tube with tail cap installed. Head houses LED, reflector and electronics where as the battery tube tail cap combo accommodates single CR123 battery. There is no rattle of batteries, AW RCR123 Battery has enough space is there for free movement. Tail cap has switch with rubber boot.

Side view of NiteCore Extreme Components

Head: Here is a more detailed look at head of NiteCore Extreme. There is a band of diamond shaped knurling on the head for better grip. This additional grip helps to twist head for changing light levels. E3 is laser engraved over the head indicating the drive circuit and electronics are specifically built for 3V - 4.2V CR123 sized batteries this includes standard CR123 battery as well as RCR123 battery.

Manufacturers Note: The E3 printed on the light bezel means it's Light Engine E3 circuit, the input voltage is 2.2V-4.2V, so please be cautious when you use this bezel on other bodies, you should NOT use 2 CR123 batteries, or the light bezel will be damaged due to excessive voltage input.

There is a band of five heat radiating fins helping in better heat dissipation Fins typically resemble those found on heat sinks. The fins not only help in heat dissipation but also enhance the cosmetic look of the NiteCore Extreme light.

Battery Tube & Tail cap: Threads on battery tube of NiteCore Extreme are anodized. Threads are lubricated nicely. There is a translucent O-Ring sitting behind the threads. The advantage of anodized threads is it prevents the thread wear during normal usage. This is due to the fact that anodizing provides hard surface of Aluminium oxide which is resistant to wear.

The Tactical Switch is installed from the backside of Battery tube.

Beautifully machined band of diamond knurling on battery tube of NiteCore Extreme offers excellent grip. Battery tube has two flat machined surfaces making a place available for laser engraving. Light model number, LED power, company name and company logo and website address are laser engraved on the flat surfaces.

Beam Shots:
Here is the Beam shot Matrix that shows NiteCore Extreme on Low & High light levels with single CR123 and AW RCR123 battery. All beam shots are taken at f/8 aperture with varying shutter speed.

The Beam shot Matrix comparing NiteCore Defender Infinity Silver and NiteCore Extreme on Low & High light levels with single 14500 and CR123 and AW RCR123 battery respectively. All beam shots are taken at f/8 aperture with varying shutter speed.

Extreme Closeup Pictures: NiteCore Extreme
Here are a few extreme Closeup shots for NiteCore Extreme Flashlight. Built quality NiteCore Extreme is superb.

Bezel of NiteCore Extreme.

NiteCore Extreme head.

NiteCore Extreme battery tube & laser engraving.

Tail cap.

Super Extreme Closeup NiteCore Extreme Bezel.

NiteCore Extreme Laser Engraving.

NiteCore Extreme Body Knurling.

NiteCore Extreme Body Laser Engraving.

NiteCore Extreme Body Knurling.

NiteCore Extreme Body Knurling.
AW RCR 123: The runtime for NiteCore Extreme with AW RCR123 on MAX light output is about 47 Minutes till 50%. NiteCore Extreme runs completely in regulation. Runtime for NiteCore Extreme for lesser output levels will be considerably more. From the runtime, it is evident that NiteCore Extreme has one of the efficient circuits out there. Considering the output that remains in range of 180 to 170 Lumens out front for the entire 47 Minutes, this is an achievement in itself. In fact, it is as of till date the best combination for longest running and highest brightness.

Buy NiteCore Extreme Flashlight at www.NiteCore.com
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