Acebeam D45 4000lm In-depth review, Pros and Cons

Cree XHP70 LED
4000 lm output
35000 cd intensity
3 x 18650 Li-Ion batteries

The Acebeam D45 (D45) released in 2017. It uses Cree XHP70 LED, OP reflector and 3 x 18650 Li-Ion batteries. The powerful emitter in this diving light provides up to 4000 lm output, 35000 cd intensity, and a beam distance of 374 m.

This light has 4 modes of lighting. Since the D45 flashlight automatically recalls the last used mode, there is no need to access higher brightness levels or additional features unless specifically required.

Acebeam D45 (D45) pictures

Acebeam D45 / D45 photo
Acebeam D45 / D45 photo
Acebeam D45 / D45 photo
Acebeam D45 / D45

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 Acebeam D45, then don’t hesite and signal the problem to us.

Acebeam D45 (D45) specifications

Rated 3/5 based on 1274 user votes.
Formdiving light


Weight436 g
Length166.5 mm
Body diameter43.9 mm
Head diameter58 mm
Materialaluminium alloy with HAIII hard-anodized finish

The D45 flashlight is a bit heavy, its weight is 436 g. It's important to consider the intended use and personal comfort when choosing a flashlight of this weight. The length of the D45 flashlight can affect its portability. A shorter flashlight is generally easier to carry in a pocket, bag, or pouch, making it more convenient for everyday use or when you're on the go. Aluminium is a lightweight material, which is beneficial for D45 flashlight.

The body of D45 flashlight treated with a Type III hard-anodized, anti-abrasive finish. This flashlight comes in a sleek black color option.


EmitterCree XHP70 LED
Color temperature6500 K
LensAR coated glass
Switchelectronic side

Cree is widely regarded as a reputable LED manufacturer and has a track record of delivering high-quality and innovative lighting solutions. Warm white light is generally considered more comfortable and less harsh on the eyes compared to cool white light. The D45 uses orange peel (OP) textured reflector. The orange peel (OP) reflector is a specific type of reflector commonly used in flashlights. It is named after its distinctive textured surface, which resembles the skin of an orange.

The AR coating of the lens helps to mitigate these reflections by altering the refractive index of the lens surface. The D45 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.


Flux4000 lm
Intensity35000 cd
Throw374 m
CD/LM factor8.75

With 4000 lm, the D45 flashlight will provide an exceptionally bright and powerful beam of light. It can illuminate large areas, outdoor spaces, or even act as a temporary spotlight in certain situations. The D45 flashlight with 35000 cd has an extended throw distance, allowing you to illuminate objects or areas at greater distances. This can be advantageous for outdoor activities, search and rescue operations, or scenarios where long-range visibility is required.

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.


Modes4 modes
Mode memoryyes
Ramping modeno

Modes on a flashlight refer to different output settings or levels of brightness that can be selected to suit different needs and preferences. The D45 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 D45 has an SOS signal mode. The SOS code consists of three short signals, followed by three long signals, and then three short signals again.


Battery3 x 18650 Li-Ion batteries
Battery indicatorno
Charger portno
Thermal regulationno
Protectiondepth 200 meters

The power source of the D45 flashlight is 3 x 18650 Li-Ion batteries, providing reliable and long-lasting energy for optimal performance. The D45 doesn't have charger port. A charger port is a designated connection point or interface where you can plug in a charger to recharge the flashlight's battery. When the D45 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. Flashlights without thermal protection may be more susceptible to overheating under extreme conditions, such as prolonged high-output use or exposure to high ambient temperatures.


Package contents2 x spare o-rings
ball arm
hexagon wrench
nylon holster
plastic holster

The package comes complete with a holster designed specifically to provide a secure and protective storage solution for your flashlight. The lanyard prevents accidental loss of the flashlight. Regularly replacing worn or damaged O-rings helps maintain the overall durability and performance of the flashlight.

The performance of the Acebeam D45 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.

Acebeam D45 (D45) comparisons

According to our statistics, the Acebeam D45 flashlight was most often compared on our site with the following flashlights.

Acebeam TK18 CU Nichia (TK18CUN) Acebeam TK18 CU Nichia Acebeam K65 (K65) Acebeam K65 Acebeam TK17 Nichia (TK17N) Acebeam TK17 Nichia Acebeam PT40 SST20 (PT40SST20) Acebeam PT40 SST20 Acebeam Rider RX (RIDERRX) Acebeam Rider RX Acebeam P17 (P17) Acebeam P17 Acebeam K75 (K75) Acebeam K75 Acebeam PT40 LH351D (PT40LH351D) Acebeam PT40 LH351D

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