Convoy L21B
$$ Mid-rangeTrending Down
tldr; Bigger thrower hits over 1km easily. SFT40 or SFT42, 21700 powered. Best budget dedicated thrower.
Check pricesSentiment Breakdown
29%Positive
Positive
29%Neutral
66%Negative
5%Based on 1,236 Reddit opinions
Strengths & Weaknesses
Scores based on sentiment analysis of topic-related comments
Key Features
- Ultimate UV Precision – Discover complete ultra violet clarity with the 365nm UV flashlight and ZWB2 band pass filter. Drastically reduced visible light and minimized discoloration of the target makes it the perfect mineral flashlight for your rockhounding adventures.
- The Highest Power in Class – Hard-driven LEDs with an expanded chip set reveal hidden fluorescent minerals with unmatched ease and efficiency. Delivering over 22 watts of power from our quad-die system (more than four times the power of the C8 UV flashlight), This powerful blacklight flashlight is a work ready tool (Batteries not included).
- Cool Under Pressure – Designed with enhanced heat transfer and sinking, featuring a direct thermal path copper-core PCB and a 176g billet aluminum heat sink, plus an onboard thermal protection sensor for an added layer of protection. The L21B-X4 is built to last.
- Ultra Long-Range Capability – Brilliantly fluoresces objects over 100 feet away. Our range-optimized smooth reflector system and flat glass LED concentrate the power of the light, dramatically increasing range compared to traditional round dome LEDs.
- 🎯 1km+ throw
- 🔋 21700 battery
- 💰 Incredible value
- 🔦 Dedicated thrower
Sentiment Over Time
Historical Price Data
Convoy L21B
Convoy L21B
All-time low: $148.75(2025-09)
What Redditors Actually Say
What Redditors Say
Best praise vs top criticism for Convoy L21B
Best Praise
+30 pts“\> If you use a thrower, you’re still only lighting up the ground, but you can light it up waaaaay over there 👉 That's a good point. It's useful but also super fun in huge fields! I recently went to the park and my L21B LHP73B lit up quite a distance.”
r/flashlight
ViewTop Criticism
+12 pts“Next time, please put a note in requesting that Simon fixes the L21B reflector/gasket issues with the smaller emitters. He's been ignoring me & many other's for over 2 years now.”
r/flashlight
View13 more quotes available below
Related Products
Frequently Asked Questions
Is the Convoy L21B worth buying?
Bigger thrower hits over 1km easily. SFT40 or SFT42, 21700 powered. Best budget dedicated thrower.
What do Redditors love about the Convoy L21B?
Redditors highlight: 🎯 1km+ throw. 🔋 21700 battery. 💰 Incredible value.
What are the downsides of the Convoy L21B?
Some criticisms include: "Next time, please put a note in requesting that Simon fixes the L21B reflector/gasket issues with the smaller emitters.
He's been ignoring me & many other's for over 2 years now...."
How accurate are these ratings?
Our sentiment analysis is approximately 80-85% accurate compared to manual review. Products with more mentions (Convoy L21B has 1,236) tend to have more reliable scores.
1,236 Reddit opinions analyzed • Last updated 4/4/2026