Convoy L21B SFT40 21700 Torch

The Convoy L21B is a high-performance, lightweight torch engineered for serious outdoor enthusiasts who demand reliable, long-range illumination. Designed with practicality and efficiency in mind, it strikes an ideal balance between intense throw and usable spill—making it equally effective for trail navigation, campsite lighting, and emergency scenarios.

At the heart of the L21B is the Luminus SFT40 LED, a high-output emitter known for its efficiency and consistent performance. Paired with a precision-engineered 8A buck driver, this combination ensures stable brightness across all modes, even under prolonged use. Unlike some high-current FET-driven models, the L21B’s driver runs cooler and manages heat more effectively, preventing aggressive thermal throttling and maintaining output for longer durations.

The beam profile is a standout feature. The smooth reflector and domeless design focus the light into a tight, powerful hotspot with a range of up to 1,258 metres—ideal for identifying distant landmarks or signaling over long distances. Yet, the beam is not overly narrow; a usable amount of spill light surrounds the hotspot, enabling better situational awareness and practical use for tasks like reading or setting up gear.

The torch’s build quality reflects its intended use in demanding environments. The aircraft-grade aluminum alloy body is anodised for enhanced scratch resistance and durability. The Ar-coated glass lens resists scratches and improves light transmission, ensuring maximum output reaches the target. The tail switch offers intuitive, one-handed operation with a firm, tactile feel, while the tailstand function allows the torch to stand upright on flat surfaces—perfect for campsite lighting or emergency use.

Safety features are well-integrated. Reverse polarity protection prevents damage if the battery is inserted incorrectly, while the low voltage warning alerts users when battery power is running low, helping avoid sudden power loss during critical moments. The mode memory function remembers your last-used setting, so you don’t need to reselect brightness each time.

Power comes from a single 21700 lithium battery, which provides ample runtime and high current delivery. The torch’s compact dimensions—170.5mm in length, 62.6mm head diameter, and 26.1mm body diameter—make it easy to carry without bulk. 

LED: Luminus SFT40

Maximum Output: 2,000 lumens

Peak Intensity: 395,000 candela (395KCD)

Maximum Throw Range: 1,258 metres

Beam Profile: Tight hotspot with usable spill

Reflector Type: Smooth reflector

Driver: 12-group, 8A constant-current buck driver with internal temperature protection

Battery Type: 1 x 21700 lithium battery (not included)

Length: 170.5 mm

Head Diameter: 62.6 mm

Body Diameter: 26.1 mm

Weight: 247g without battery