Convoy M21B Review: The Ultimate EDC Flashlight
In this article, we delve into the Convoy M21B flashlight, a popular choice among flashlight enthusiasts and everyday carry (EDC) users. Known for its impressive brightness, durability, and versatility, the M21B stands out in a crowded market of portable lighting solutions.
This flashlight has generated significant interest due to its ability to deliver high performance at a relatively affordable price. We will explore its key features, performance metrics, user interface, and real-world applications.
Additionally, we will provide insights from user reviews and comparisons with other models in the Convoy lineup. By the end of this review, you will have a comprehensive understanding of whether the Convoy M21B is the right flashlight for your needs.
Table of Contents
- Design and Build Quality
- LED and Beam Performance
- User Interface and Modes
- Battery and Runtime
- Heat Management
- Practical Applications
- Comparisons with Other Models
- User Reviews and Community Feedback
- FAQ
- Conclusion
Design and Build Quality
The Convoy M21B is constructed with a focus on durability and functionality, utilizing high-quality materials that ensure a long lifespan. The outer shell is made from aerospace-grade anodized aluminum, offering both a rugged exterior and a lightweight design.
This flashlight weighs in at approximately 7.4 ounces (around 210 grams) and measures 5.5 inches (about 140 mm) in length, making it portable and easy to carry in pockets or backpacks.
Material Composition
The material composition of the M21B is key to its performance. The anodized aluminum not only provides a sturdy body but also enhances grip and resistance to scratches.
This makes the flashlight suitable for various environments, from urban settings to rugged outdoor adventures.
Weight and Dimensions
| Dimension | Measurement |
|---|---|
| Weight (without battery) | 210 grams (7.4 oz) |
| Length | 140 mm (5.5 inches) |
| Diameter (head) | 38 mm (1.5 inches) |
| Diameter (body) | 25 mm (1 inch) |
The dimensions and weight of the M21B make it an excellent choice for EDC. It can easily fit into a pocket, while still being substantial enough to feel secure in hand.
The relatively compact design does not sacrifice performance, allowing users to benefit from a powerful light source without carrying a bulky flashlight.
Ergonomic Features
The M21B is designed with user comfort in mind. The flashlight features a tactical-style tail switch for easy operation, which is crucial during high-pressure situations.
Additionally, the knurling on the body enhances grip, ensuring that the flashlight remains secure even in wet conditions. The design also allows for tail-standing, enabling the flashlight to be used as a lantern, further increasing its versatility.
LED and Beam Performance
The Convoy M21B is equipped with a high-performance LED that contributes significantly to its reputation. With options including the Luminus SFT40 and others, the M21B can produce a maximum output of 2000 lumens, making it one of the brightest flashlights in its category.
This impressive lumen output is complemented by a throw distance of up to 700 meters, allowing users to illuminate distant objects efficiently.
LED Options and Types
The M21B offers various LED configurations tailored to different user preferences. For example, the SFT40 is favored for its efficiency and excellent color rendering.
Users can choose between different color temperatures, including 6500K for a cooler white light, and options like 3000K and 5000K for warmer tones. This versatility allows the M21B to cater to various applications, from outdoor adventures to home use.
Beam Profile Analysis
| Output Level | Measured Lumens | Throw Distance (meters) |
|---|---|---|
| Turbo | 2000+ | 700 |
| High | 880 | 400 |
| Medium | 290 | 150 |
| Low | 30 | 50 |
The beam profile of the M21B is well-balanced, combining a focused hotspot with a wide spill. The hotspot is sufficiently bright for long-distance visibility, while the spill offers ample illumination for close-up tasks.
This balance makes the flashlight highly adaptable, whether used for hiking, camping, or emergency scenarios.
Performance in Different Environments
The M21B’s performance shines in various environments. Users have reported excellent results during outdoor activities, such as hiking and camping, where the long throw distance is beneficial.
Additionally, the light’s brightness is effective in urban settings, ensuring visibility in dark streets or alleyways. Its ability to maintain performance in colder temperatures, as noted by users, further enhances its usability in different conditions.
User Interface and Modes
The user interface of the Convoy M21B is designed to be intuitive and versatile, featuring a mechanical tail switch that allows easy access to all modes. The flashlight employs a 12-group programmable mode system, enabling users to customize their experience according to their specific needs.
Mode Groups Overview
The M21B comes with a variety of mode groups, each containing multiple brightness levels. These include the standard settings of 0.1%, 1%, 10%, 35%, and 100%, along with special modes such as strobe, SOS, and biking.
This extensive configurability allows users to choose the mode that best suits their activity, whether for casual use or emergency situations.
User Experience with the Interface
| Action | Result |
|---|---|
| Click (from Off) | Turn On (last used mode) |
| Half Click | Cycle through modes |
| Click (from On) | Turn Off |
| 10 Clicks | Lockout Mode |
The user feedback indicates that the interface is straightforward, making it easy for users to transition between modes quickly. The ability to memorize the last mode used is particularly beneficial for those who frequently switch settings.
However, some users have noted that additional shortcuts, such as a quick access to turbo mode, would enhance the overall experience.
Customization Options
Customization is one of the standout features of the M21B’s interface. Users can select their preferred mode groups and adjust the order of brightness levels.
This flexibility is especially useful for those who have specific lighting needs for various activities, such as searching for lost items or navigating through dark areas. The ability to enter programming mode allows users to personalize their flashlight experience, making the M21B an ideal choice for flashlight enthusiasts.
Battery and Runtime
The Convoy M21B is powered by a single 21700 lithium-ion battery, which is known for its high capacity and efficiency. This choice of battery supports the flashlight’s impressive performance metrics, with runtimes that cater to a variety of usage scenarios.
Battery Types and Compatibility
Users can select from a range of compatible batteries, including both protected and unprotected 21700 cells. However, it is generally recommended to use an unprotected cell for optimal fit and performance.
The M21B also supports USB-C charging, allowing for convenient recharging options without the need for a separate battery charger.
Runtime Analysis
| Output Level | Claimed Runtime | Measured Runtime |
|---|---|---|
| Turbo | 1.5 hours | 1 hour |
| 35% | 1.6 hours | 1.5 hours |
| 10% | 6 hours | 6.2 hours |
The runtime analysis reveals that the M21B maintains respectable performance across various output levels. Users have noted that while turbo mode is bright, it does lead to a quick thermal step-down to prevent overheating.
In contrast, lower output settings, such as 10%, provide extended runtimes, making the flashlight reliable for long outdoor excursions. Overall, the battery efficiency of the M21B enhances its appeal as an EDC flashlight.
Charging Considerations
The USB-C charging feature of the M21B is particularly appreciated by users, as it simplifies the recharging process. Users can conveniently recharge the flashlight without removing the battery, which is a significant advantage during extended trips.
However, it is important to note that no charging cable is included, which means users will need to have their own cable handy. This minor inconvenience does not detract from the overall functionality of the flashlight.
Heat Management
Heat management is a crucial aspect of high-output flashlights like the Convoy M21B. With output levels reaching up to 2000 lumens, effective thermal regulation is essential to ensure user safety and maintain performance.
Heat Generation at Different Outputs
During user tests, it was observed that the M21B generates significant heat, particularly in turbo mode. While the body can become quite warm, it remains manageable due to the thermal design.
Users reported that at 100%, the light reaches approximately 55°C, which is hot but not unbearable to hold for short durations.
Cooling Design Features
| Output Level | Heat Level |
|---|---|
| 100% | Very Hot |
| 35% | Warm |
| Low (10%) | Cool |
The cooling fins on the body of the M21B play a significant role in dissipating heat during operation. These design features help to maintain a comfortable grip while using the flashlight at higher outputs.
However, users should be mindful of prolonged usage at maximum brightness, as this can lead to rapid heating, necessitating brief cooldown periods.
User Experiences and Feedback
Overall, user feedback regarding the heat management of the M21B has been positive. Many users appreciate the flashlight’s ability to handle heat efficiently, even under continuous use.
However, some have suggested that a more aggressive thermal regulation system could enhance safety during extended high-output operations. This feedback highlights the importance of both performance and user comfort in flashlight design.
Practical Applications
The Convoy M21B is designed for versatility, making it suitable for a wide range of practical applications. Whether for everyday carry, outdoor adventures, or emergency situations, this flashlight meets the needs of various users.
EDC Use Cases
As an everyday carry flashlight, the M21B excels in providing reliable illumination when needed most. Users have reported using it for tasks such as walking at night, navigating dark spaces, or simply having a dependable light source on hand.
The compact design and light weight make it easy to integrate into daily life without adding significant bulk.
Outdoor and Survival Scenarios
| Scenario | Recommended Output |
|---|---|
| Campsite Illumination | 35% for extended use |
| Finding Lost Items | Turbo for maximum visibility |
| Navigating Trails | 10% for battery conservation |
In outdoor scenarios, the M21B proves to be a valuable tool for camping, hiking, and survival situations. Its long throw distance is ideal for illuminating trails or spotting wildlife, while the lower settings conserve battery life for prolonged outings.
Users have expressed satisfaction with its rugged construction and ability to withstand the elements, making it an excellent companion for outdoor adventures.
Recommendations for Specific Activities
For specific activities, users have reported that the M21B is versatile enough to adapt to various tasks. Its bright output levels make it suitable for both casual and critical situations, such as emergency preparedness or search and rescue operations.
The flashlight’s robust features, including low voltage protection and multiple modes, further enhance its reliability in high-pressure environments.
Comparisons with Other Models
When considering the Convoy M21B, it’s essential to understand how it stacks up against other models in the Convoy lineup and competing brands. This comparison helps potential buyers make informed decisions based on their specific needs and preferences.
M21A vs. M21B
| Feature | M21A | M21B |
|---|---|---|
| Max Lumens | 1800 | 2000 |
| Throw Distance | 600 meters | 700 meters |
| Battery Type | 18650 | 21700 |
The M21B offers a slight advantage over the M21A in terms of lumen output and throw distance, while also utilizing a more modern battery type. This makes the M21B a better option for users seeking maximum performance and efficiency.
Convoy vs. Competitors (e.g., Olight, Fenix)
| Brand/Model | Max Lumens | Price | Battery Type |
|---|---|---|---|
| Olight S2R Baton II | 1150 | $59.95 | 18650 |
| Fenix PD35 V2.0 | 1000 | $69.95 | 18650 |
| Convoy M21B | 2000 | $32.95 | 21700 |
Comparatively, the Convoy M21B stands out as a cost-effective option with superior lumen output and battery capacity. While competitors offer slightly more features, such as integrated charging, the performance-to-price ratio of the M21B is hard to beat, making it an attractive choice for budget-conscious users.
User Reviews and Community Feedback
The Convoy M21B has garnered a solid reputation within the flashlight community, with users praising its performance, durability, and versatility. Feedback from various platforms indicates a consensus that this flashlight is a reliable option for both casual users and flashlight enthusiasts.
Positive Feedback Summary
Many users have highlighted the M21B’s impressive brightness and long throw distance, making it an excellent choice for outdoor activities. Its rugged design has also received praise, with users noting its ability to withstand harsh conditions.
The flashlight’s user-friendly interface and customizable modes are also frequently mentioned as significant advantages.
Common Issues Reported
While the overall sentiment is positive, some users have reported minor issues, such as the flashlight becoming warm during extended use at higher outputs. Additionally, a few users have expressed a desire for an easier way to access turbo mode, indicating that while the interface is functional, there is room for improvement in accessibility.
Overall Sentiment from Users
| Rating | Number of Reviews |
|---|---|
| 5 Stars | 11 |
| 4 Stars | 5 |
| 3 Stars | 0 |
The average ratings from various platforms indicate a strong favorability towards the M21B, with the majority of users giving it high scores. This highlights the flashlight’s success in meeting user expectations and solidifying its place in the market as a reliable EDC option.
FAQ
What is the maximum lumen output of the Convoy M21B?
The maximum lumen output of the Convoy M21B is 2000 lumens. This high output level allows for excellent visibility and makes the flashlight suitable for various applications, from casual use to emergency situations.
Can I use a protected battery with the M21B?
While it is technically possible to use a protected battery with the M21B, it is generally recommended to use an unprotected 21700 cell. Protected batteries may not fit well due to their added length, which could affect the flashlight’s performance.
How does the M21B perform in cold weather?
User feedback suggests that the M21B performs admirably in cold weather conditions. The flashlight maintains its brightness and functionality even in lower temperatures, making it a reliable choice for outdoor activities during winter.
What are the available LED options for the M21B?
The Convoy M21B offers several LED options, including the Luminus SFT40, known for its high efficiency and excellent color rendering, as well as others like the XHP70.3, catering to different user preferences.
How do I access the strobe mode?
To access the strobe mode on the Convoy M21B, users can click the tail switch three times rapidly. This feature is particularly useful in emergency situations where a strobe light can help attract attention.
Conclusion
In conclusion, the Convoy M21B flashlight offers exceptional value, combining high performance with thoughtful design and functionality. Ideal for both everyday carry and outdoor adventures, it provides users with robust features and reliable operation.
While it has some minor drawbacks, the overall consensus from the community is overwhelmingly positive. Whether you’re an outdoor enthusiast or simply need a dependable flashlight, the M21B stands out as a top contender in its category.
