In demanding industrial construction sites, underground tunnel maintenance, and night inspection details, the primary barrier to handheld lighting performance is thermal saturation, forcing standard aluminum torches to throttle lumen output within minutes. LED flashlight, rechargeable 20W 4000Lm 6500K 4000mAh VIDEX VLF-A406 | black – copper cooling elements and increased power is an advanced handheld searchlight incorporating a pure copper thermal core directly beneath the emitter substrate. This hybrid metallurgic architecture leverages the extreme thermal conductivity of copper combined with the lightweight structure of aerospace aluminum, sustaining a formidable 4000-lumen output during demanding operational cycles.

The mechanical core utilizes a direct thermal path: the Luminus SST40 LED crystal is anchored to a heavy copper sink, dissipating heat away from the semiconductor junction significantly faster than conventional aluminum substrates. This design prevents lumen depreciation and sustains a 4000-lumen Turbo beam with 9400 cd of beam intensity reaching up to 200 meters. Its 6500K cool white daylight spectrum guarantees sharp optical definition and contrast across structural inspections. The electronic driver manages six calibrated modes, including an ultra-low Moon mode (30Lm) capable of continuous deployment for up to 180 hours (more than 7 days) on a single charge. The torch features an electronic double-click safety lockout and memory retention for the last active profile. Energy is supplied by a replaceable Li-ion 21700 cell rated at 4000mAh, recharged via an onboard USB-C port (DC 5V, 2A) in 2.5 hours and monitored by a 4-stage color LED fuel gauge on the activation switch. Despite the copper thermal sink, bare chassis weight is kept to an agile 77 grams. The CNC-machined aircraft-grade aluminum body meets the IP68 standard (submersion down to 2 meters) and withstands 1-meter drop shocks.

Technical Specifications and Operating Parameters

• Physical Dimensions (mm): Overall length 128 mm, head diameter 31 mm, and body diameter 31 mm with an ultra-lightweight 77 g chassis (excluding battery) for mobility.
• Copper Thermal Engine: Heavy pure copper sink integrated beneath the emitter board for rapid passive heat extraction under high electrical loads.
• Optical Emitter and Wattage: Luminus SST40 LED module delivering 20W power and up to 4000Lm of calibrated Turbo flux.
• Beam Throw Geometry: Deep smooth reflector produces 9400 cd of peak beam intensity reaching up to 200 m in open country.
• Color Temperature: 6500K (cool white daylight output delivering maximum visual edge definition for structural and mechanical inspection).
• Turbo Mode Parameters: 4000Lm maximum output, 200 m throw, 9400 cd intensity, total cumulative runtime of 3h 15min (with thermal management).
• High Mode Parameters: 1140Lm output, 111 m throw, 3060 cd intensity, continuous operating runtime of 3h 30min.
• Middle Mode Parameters: 550Lm output, 76 m throw, 1460 cd intensity, continuous operating runtime of 7h 45min.
• Low Mode Parameters: 300Lm output, 57 m throw, 800 cd intensity, sustained field runtime of 14h 30min.
• Moon Ultra-Endurance Profile: 30Lm output, 35 m throw, 320 cd intensity, maximum field autonomy up to 180h (7.5 days continuous).
• Strobe Signaling Profile: 1140Lm rapid defensive disorienting pulse (3060 cd, 111 m) with runtime up to 4h.
• Swappable Energy Reservoir: Standard Li-ion 21700 cell offering 4000mAh capacity (3.7V) for uninterrupted field service.
• Rapid USB-C Interface: Onboard USB-C input terminal (DC 5V, 2A) completes battery replenishment in 2.5 hours.
• Four-Stage Fuel Gauge: Switch-mounted LED array (green 100–85%, blinking green 85–50%, red 50–25%, blinking red 25–1%).
• Electronic Lockout Logic: Double-press safety command prevents accidental illumination during transport and storage.
• IP68 Ingress Certification: Complete dustproof barrier and waterproof sealing tested for continuous submersion down to 2 m depth; 1 m drop resistance.
• Package Deliverables: High-power copper-core torch, Li-ion 21700 battery, steel pocket clip, USB-C cable, and instruction manual.