Coast G20 36lm flashlight review: Pros and Cons

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

The Coast G20 flashlight 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.

Table of Contents

The content of this article reflects our own experiences and viewpoints. We aim to offer insights on a topic, and we hope others find it helpful and motivating. Additionally, we make every effort to provide accurate and comprehensive coverage. If you found an error or something lacking in the specifications for the Coast G20, then tell us.

Coast G20 / G20

The flashlight is a must-have tool for outdoor activities. These include camping, hiking, and night-time exploration, it offers guidance and safety. The G20 has TIR lenses. Engineers design them to minimize light scattering and decrease lens artifacts. Without mode memory, this flashlight always starts in the default mode.

Coast G20 specifications

Rated 3 / 5 based on 1396 user votes.

A flashlight provides reassurance and confidence. It is helpful in unfamiliar or dangerous places.

Coast G20 / 2

Body, materials, weight, colors

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. The length of a flashlight can affect how it feels in your hand and how you can grip and maneuver it. The aluminum bodies can be anodized. This adds a protective layer and a wide range of color options for flashlight bodies. The HAIII coating is often matte or textured. This finish improves grip and feels nice in the hand. The G20 flashlight comes in many colors. The choice of color can serve different purposes and preferences.

Coast G20 / 1

System, LED, lens, reflector

Emitterunspecified 5mm LED
Color temperature7700 K
Switchmechanical rear

The color temperature choice depends on the light's use and personal taste. This TIR lens offers flexibility. It can create many beam patterns, from wide angles to spotlights. Mechanical switches often offer tactile feedback. Users can feel a distinct click or resistance when they press the switch. A simple press or click of the rear switch turns the flashlight on or off. This removes the need for complex button combinations or multi-step processes.

Performance, flux, intensity, throw

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

You mainly need a flashlight for basic tasks like finding keys or navigating in dimly lit areas. 36 lm can be enough. It can also be enough for occasional use around the house. 121 cd can make things quite bright. It's enough for many everyday tasks. The throw distance is the farthest distance the flashlight can light an object. The candela per lumen (cd/lm) ratio can be used to determine if a flashlight has a spot or flood type beam.

In some cases, a flashlight with a higher CRI may offer a more natural. It may also be more pleasant to use, it can better reveal the true colors of the surroundings. A CRI of 73 can be enough for daily use. This includes outdoor activities, household tasks, and emergencies.

Software, user interface, modes

Modes1 mode
Mode memoryno
Ramping modeno

Features, battery, protections

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. The G20 flashlight lacks built-in LVP. You should use a protected battery to prevent over-discharging. Flashlights without thermal protection may be more susceptible to overheating under extreme conditions.

Accessories, package contents

Package contents2 x AAA batteries

According to the ANSI/NEMA FL1 Standard, we measure the performance of the G20 flashlight 30 seconds after switching on the light. The ANSI/NEMA FL1 2009 Standard is a set of flashlight performance guidelines.

Conclusion, pros and cons

This Coast flashlight, like any other, has its strengths and weaknesses. Let's take a close look at both sides to understand this flashlight better. I share my thoughts on its standout features and the parts that might need improvement. Keep in mind, these are just my opinions, and you might have a different perspective.


  • lightweight
  • aluminium body
  • body color options
  • TIR lens
  • tactical switch


  • unspecified LED
  • cool light
  • moderated performance
  • low intensity
  • moderated CRI
  • no mode memory
  • no battery indicator
  • no built-in charger
  • no LVP
  • no thermal regulation
  • no auxiliary LEDs
  • non-magnetic


Coast G20 / G20 photo 1.
Coast G20 / G20 photo 2.
Coast G20 / G20 photo 3.
Coast G20 / G20

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David Hagon
I love bushcraft and flashlights. I find joy in mastering wilderness survival skills and exploring the realm of illuminating gadgets. Bushcraft isn't just fun, it's a learning journey. I form a strong bond with nature. It's more than a hobby, it enriches me in practical and spiritual ways.
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