Coast G20 36lm In-depth review, Pros and Cons

unspecified 5mm LED
36 lm output
121 cd intensity
2 x AAA batteries

The Coast G20 (G20) released in 2017. It uses unspecified 5mm LED, TIR reflector and 2 x AAA batteries. The powerful emitter in this flashlight provides up to 36 lm output, 121 cd intensity, and a beam distance of 22 m.

This flashlight has a wide range of applications across various domains. It is an indispensable tool for outdoor activities like camping, hiking, or night-time exploration, offering guidance and safety. TIR lenses of the G20 are engineered to optimize optical efficiency by reducing light scattering and minimizing lens artifacts. Without mode memory, this flashlight always starts in the default mode.

Coast G20 (G20) pictures

Coast G20 / G20 photo
Coast G20 / G20 photo
Coast G20 / G20 photo
Coast G20 / G20

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 Coast G20, then don’t hesite and signal the problem to us.

Coast G20 (G20) specifications

Rated 3/5 based on 1203 user votes.

The presence of a flashlight can provide a sense of reassurance and confidence in unfamiliar or potentially dangerous environments.


Weight68 g
Length144 mm
Body diameter16 mm
Head diameter16 mm
Materialaluminium alloy with HAIII hard-anodized finish

The 68 g flashlight may not provide the same level of brightness or features as larger models, it can be handy for quick and convenient illumination in emergency situations or for close-range tasks. The length of a flashlight can affect how it feels in your hand and how you can grip and maneuver it. A longer flashlight may provide a more substantial grip, making it easier to hold and control, especially if you have larger hands.

The aluminium bodies can be anodized, providing a protective layer and a wide range of color options for flashlight bodies. Anodizing enhances the corrosion resistance, hardness, and scratch resistance of the aluminum, while also allowing for a variety of attractive finishes. The HAIII coating often has a matte or textured finish, which enhances grip and provides a comfortable feel in the hand. This can be particularly useful in situations where a secure grip on the flashlight is essential, such as in wet or slippery conditions. The G20 flashlight is available in a variety of colors, and the choice of color can serve different purposes and preferences.


Emitterunspecified 5mm LED
Color temperature7700 K
Switchmechanical rear

The choice of color temperature depends on the specific lighting application and personal preferences. This TIR lens offers flexibility in achieving various beam patterns, from wide-angle illumination to focused spotlights, depending on the specific design of the lens. The G20 has mechanical switch. Mechanical switches often offer tactile feedback, allowing users to feel a distinct click or resistance when the switch is pressed. This feedback helps users confirm that the switch has been activated or deactivated, providing a reassuring sense of control and awareness. With a rear switch of G20 flashlight, the operation of the flashlight is often straightforward and easy to grasp. A simple press or click of the rear switch turns the flashlight on or off, eliminating the need for complex button combinations or multi-step processes.


Flux36 lm
Intensity121 cd
Throw22 m
CD/LM factor3.36

If you mainly need a flashlight for basic tasks like finding keys, navigating in dimly lit areas, or occasional use around the house, 36 lm can be adequate. 121 cd can provide a reasonable level of luminous intensity for many everyday lighting tasks. 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.

Flashlights with a higher cd/lm ratio typically excel in long-range throw and focused beam applications, while flashlights with a lower cd/lm ratio may provide a wider and more evenly distributed beam for closer-range illumination or general-purpose use. In some cases, a flashlight with a higher CRI may offer a more natural and pleasant viewing experience, as it can better reveal the true colors of the surroundings. This can be advantageous when using a flashlight for extended periods or in situations where visual comfort is desired. While the G20 may not provide the highest level of color accuracy, a CRI of 73 can be sufficient for everyday use, such as outdoor activities, household tasks, or emergency situations.


Modes1 mode
Mode memoryno
Ramping modeno


Battery2 x AAA batteries
Battery indicatorno
Charger portno
Thermal regulationno

The G20 flashlight utilizes 2 x AAA batteries as its power source. The G20 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. The G20 flashlight doesn't have built-in LVP, it is recommended to use a protected battery to prevent over-discharging. The protective circuit of battery helps safeguard the battery from various potential risks and ensures safe and reliable operation. This flashlight doesn't have built-in temperature control. Flashlights without thermal protection may rely on other design elements for heat dissipation, such as heat sinks, fins, or body materials with good thermal conductivity.


Package contents2 x AAA batteries

The performance of the Coast G20 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.

Coast G20 (G20) comparisons

According to our statistics, the Coast G20 flashlight was most often compared on our site with the following flashlights.

Coast G20 (G20) Coast G20

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