Powertac E5R-G4 flashlight review

1800 lm output
25600 cd intensity
1 x 18650 Li-Ion battery

The Powertac E5R-G4 flashlight was released in 2020. It uses Cree XHP35 HI LED, SMO reflector and 1 x 18650 Li-Ion battery. The powerful emitter in this flashlight provides up to 1800 lm output, 25600 cd intensity, and a beam distance of 320 m.

Excited to learn if the E5R-G4 lives up to expectations? Read on!

Table of Contents

  • Powertac E5R-G4 specifications
    • Body, materials, weight, colors
    • System, LED, lens, reflector
    • Performance, flux, intensity, throw
    • Software, user interface, modes
    • Features, battery, protections
    • Accessories, package contents
  • Conclusion, pros and cons
  • Photos

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 Powertac E5R-G4, then tell us.

Powertac E5R-G4 / E5RG4

The E5R-G4 is an impressive flashlight that offers both power and reliability. Its robust build and outstanding illumination make it a versatile lighting instrument. This light has 5 modes of lighting. The lack of mode memory means you need to adjust the flashlight's settings each time you turn it on. It has a strobe function, which is one of the most effective self defense tools available. This Powertac USB rechargeable flashlight comes with versatile charging options.

Powertac E5R-G4 specifications

Rated 4 / 5 based on 1436 user votes.

The E5R-G4 flashlight allows you to light dark areas. It helps you find hazards or stop threats by shining light on them.

Powertac E5R-G4 / 4

Body, materials, weight, colors

Weight76 g
Length133.2 mm
Body diameter23 mm
Head diameter25.4 mm
Materialaluminium alloy with HAIII hard-anodized finish

The E5R-G4 is small, compact, and designed for ultra-portability. A balanced flashlight has even weight. It can be more comfortable to hold for longer and reduce hand fatigue. The aluminium body of the E5R-G4 has excellent thermal conductivity. This means it can effectively dissipate heat generated by the flashlight's components. HAIII is a specific anodizing process. It creates a thicker and harder oxide layer than regular anodizing. The E5R-G4 flashlight comes in a stylish black color.

Powertac E5R-G4 / 1

System, LED, lens, reflector

EmitterCree XHP35 HI LED
Color temperature6500 K
Lenstoughtened AR coated glass
Switchelectronic side, mechanical rear

Cree is a US-based LED manufacturer. It is well-regarded for its high-quality products and innovation in lighting. Color temperature is a characteristic of light. It is used to quantify the color appearance of light sources. The E5R-G4 has a smooth reflector. The right reflector focuses light well. It gives you a better hotspot, and it throws better. The AR coating reduces the loss of light due to reflections, allowing more light to pass through the lens.

The E5R-G4 flashlight has multiple switch options. They can be useful, adding versatility and convenience to using the flashlight. The flashlight has electronic switches. They have many benefits and extra features compared to mechanical switches. Mechanical switches are usually robust. They resist wear and tear and work in many environments. Rear switches are common on tactical flashlights. Law enforcement, military, and self-defense personnel use them.

Powertac E5R-G4 / 2

Performance, flux, intensity, throw

Flux1800 lm
Intensity25600 cd
Throw320 m
CD/LM factor14.22

With 1800 lm, the E5R-G4 flashlight will offer a brighter and more powerful beam of light. The E5R-G4 flashlight has 25600 cd. It can light objects at greater distances. The throw is the distance in meters at which the flashlight produces a light intensity of 0.25 lux. The cd/lm factor is the candela-to-lumen ratio. It shows how concentrated a light source's output is.

Powertac E5R-G4 / 5

Software, user interface, modes

Modes5 modes
Mode memoryno
Ramping modeno

A flashlight's modes are different output settings or brightness levels. They can be chosen to meet different needs and preferences. The E5R-G4 flashlight has a strobe function. It produces a rapid, repetitive flashing of light.

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Features, battery, protections

Battery1 x 18650 Li-Ion battery
Battery indicatoryes
Charger portmagnetic USB
Thermal regulationno

The Powertac E5R-G4 flashlight is powered by 1 x 18650 Li-Ion battery. A battery indicator lets users see the battery status. It helps them decide when to recharge or replace the battery. A flashlight's USB charger can be very useful. This is especially true in emergencies. In such situations, access to power outlets may be limited. The flashlight detects when the battery's voltage has dropped to a certain level. Then, it reduces or cuts off the power.

Flashlights without thermal protection may rely on other design elements to dissipate heat. These elements include heat sinks, fins, or body materials with good thermal conductivity. The "8" in the IPx8 rating means the highest level of protection. It is against water ingress.

Accessories, package contents

Package contents18650 battery
magnetic USB charger cable
plastic holster
spare o-ring

It comes with a battery. The battery must be fully charged before you first use your E5R-G4. The holster keeps your flashlight secure. It provides a reliable and easy way to do this when not in use. When gripping the flashlight with the lanyard around your wrist, it gives a more secure hold. It also gives a more stable hold. Replacing worn or damaged O-rings helps a lot. It keeps up the flashlight's durability and performance.

According to the ANSI/NEMA FL1 Standard, we measure the performance of the E5R-G4 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 Powertac 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
  • AR coated lens
  • side switch
  • tactical switch
  • adequate performance
  • super bright
  • multiple modes
  • tactical strobe
  • battery indicator
  • USB charger
  • low-voltage protection
  • waterproof
  • battery included
  • protective holster


  • cool light
  • no mode memory
  • no thermal regulation
  • no auxiliary LEDs
  • non-magnetic


Powertac E5R-G4 / E5RG4 photo 1.
Powertac E5R-G4 / E5RG4 photo 2.
Powertac E5R-G4 / E5RG4 photo 3.
Powertac E5R-G4 / E5RG4 photo 4.
Powertac E5R-G4 / E5RG4 photo 5.
Powertac E5R-G4 / E5RG4 photo 6.
Powertac E5R-G4 / E5RG4

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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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