Sofirn IF25A 4000K 2000lm In-depth review, Pros and Cons

4 x Luminus SST20 LEDs

2000 lm output

8000 cd intensity

1 x 21700 Li-Ion battery

The Sofirn IF25A 4000K (IF25A4000K) released in 2020. It uses 4 x Luminus SST20 LEDs, TIR reflector and 1 x 21700 Li-Ion battery. The powerful emitter in this flashlight provides up to 2000 lm output, 8000 cd intensity, and a beam distance of 179 m.

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The IF25A 4000K is an impressive flashlight that offers both power and reliability. Its robust build and outstanding illumination make it a versatile lighting instrument. Since the IF25A 4000K flashlight automatically recalls the last used mode, there is no need to access higher brightness levels or additional features unless specifically required. The strobe function can be utilized as a self-defense tool, providing a non-lethal means to deter or disorient attackers The flashlight is designed to be powered by rechargeable batteries that can be easily recharged using a USB cable connected to a power source such as a computer, power bank, or wall adapter.

Sofirn IF25A 4000K (IF25A4000K) pictures

The specifications below are based on the official data published by the manufacturer, but we also take user reviews into consideration. If you found an error or something lacking in the specifications above for the Sofirn IF25A 4000K, then don’t hesite and signal the problem to us.

Sofirn IF25A 4000K (IF25A4000K) specifications

Brand	Sofirn
Name	IF25A 4000K
Type	IF25A4000K
Rating	★★★★★ Rated 4/5 based on 1233 user votes.
Launch	2020
Form	flashlight

This Sofirn flashlight offers portability, versatility, and reliability in providing illumination.

Body

Weight	99 g
Length	106.4 mm
Head diameter	35 mm
Material	aluminium alloy with HAIII hard-anodized finish
Colors	black

The 99 g flashlight would be considered extremely lightweight for a handheld flashlight. The ideal length of a flashlight depends on personal preference, intended use, and the specific features and functionality you're looking for. Aluminium is a lightweight material, which is beneficial for IF25A 4000K flashlight. Hard-Anodized Type III (HAIII) is a specific anodizing process that creates a thicker and harder oxide layer compared to regular anodizing. It involves subjecting the aluminum to a higher voltage and a sulfuric acid bath, resulting in a dense and durable coating. This flashlight comes in a sleek black color option.

System

Emitter	4 x Luminus SST20 LEDs
Color temperature	4000 K
Reflector	TIR
Lens	toughtened AR coated glass
Switch	electronic side

Luminus has established a positive reputation as a reliable LED manufacturer, and their products are widely used and trusted by lighting professionals and enthusiasts alike. Warm white light is generally considered more comfortable and less harsh on the eyes compared to cool white light. The AR coating of the lens helps to mitigate these reflections by altering the refractive index of the lens surface. The IF25A 4000K has electronic switch. The electronic switches may have a higher likelihood of standby drain compared to mechanical switches since they require a small amount of power for operation.

Performance

Flux	2000 lm
Intensity	8000 cd
Throw	179 m
CD/LM factor	4
CRI	90

The 2000 lm output of IF25A 4000K provides greater versatility, as you can adjust the brightness levels to suit different lighting needs. With 8000 cd, the IF25A 4000K flashlight provides a noticeably brighter and more intense beam of light. It can illuminate objects or areas with greater clarity and visibility, even at longer distances. The throw distance refers to the maximum distance at which the flashlight can effectively illuminate an object or target. The stated throw distance typically indicates the point at which the brightness falls below a specified threshold, such as 0.25 lux.

The candela per lumen (cd/lm) ratio can be used to determine if a flashlight has a spot or flood type beam. Well-focused spot beams can be over 100 cd/lm, tactical flashlights are typically between 20-100 cd/lm, and work lights are less than 10 cd/lm. If accurate color representation is a priority for your specific needs, a flashlight with a CRI of 90 or above is highly recommended. The IF25A 4000K with a CRI of 90 is beneficial in everyday use where accurate color perception enhances the overall visual experience. It can make colors appear more vibrant, natural, and distinguishable, allowing for a more immersive and enjoyable lighting environment.

Software

Firmware	Anduril
Mode memory	yes
Ramping mode	yes
Strobe	yes
SOS/Beacon	yes

The Anduril firmware has gained popularity among flashlight enthusiasts due to its versatility, ease of use, and the ability to customize flashlight behavior. The IF25A 4000K has mode memory. Mode memory means that the flashlight will remember the mode you were using when the light was last turned off, and when you turn it on again. The IF25A 4000K flashlight with ramping mode has a user interface that enables you to control the brightness level by pressing and holding a button.

The strobe function on the IF25A 4000K flashlight is a feature that produces a rapid and repetitive flashing of light. It is designed to create a disorienting or attention-grabbing effect. The IF25A 4000K has an SOS signal mode. The SOS code consists of three short signals, followed by three long signals, and then three short signals again.

Features

Battery	1 x 21700 Li-Ion battery
Battery indicator	yes
Charger port	USB Type-C
LVP	yes
Thermal regulation	yes
Protection	IPx8
AUX LEDs	no
Magnetic	no

The power source of the IF25A 4000K flashlight is 1 x 21700 Li-Ion battery, providing reliable and long-lasting energy for optimal performance. Having a battery indicator on a flashlight is beneficial as it allows users to monitor the battery status and make informed decisions regarding recharging or replacing the battery. It helps prevent unexpected power failures during critical situations and ensures that the flashlight is ready for use when needed.

The IF25A 4000K flashlight can be charged directly from a USB power source, such as a wall adapter, computer, power bank, or car charger. This allows for convenient and versatile charging options, as you can utilize various USB power sources to recharge the flashlight's internal battery. When the IF25A 4000K flashlight detects that the voltage of the battery has dropped to a certain threshold, it automatically reduces or cuts off the power output to prevent further discharge. This helps to preserve the battery's capacity and prevent it from reaching a critically low voltage level.

The IF25A 4000K has thermal protection feature. The thermal protection mechanisms are designed to monitor and regulate the temperature of the flashlight during operation. This feature helps prevent overheating, which can be detrimental to the flashlight's performance, battery, and overall safety. The IF25A 4000K flashlight with IPx8 rating can withstand being submerged in water beyond 1 meter for a prolonged period, typically specified by the manufacturer.

Accessories

Package contents	USB Type-C cable

The performance of the Sofirn IF25A 4000K flashlight is measured according to the ANSI / NEMA FL1 Standard 30 seconds after switching the light on. The ANSI/NEMA FL1 2009 Standard is a set of flashlight performance guidelines.