A maker recently engineered an extreme, portable lighting system built around one of the brightest LEDs available, capable of producing more than 120,000 lumens while consuming roughly 1.5 kW of power. Because such an LED generates enormous heat, traditional cooling methods quickly fail. To prevent thermal damage, the project focuses heavily on a liquid-cooling system designed to dissipate heat fast enough to keep the LED operational during high-power runs.
The cooling assembly uses six large copper PC radiators arranged in a hexagonal structure with 18 cooling fans to maximize airflow. A custom brass coolant reservoir also doubles as a cooling chamber for the LED’s voltage regulators, while a large copper water block mounted directly beneath the LED transfers heat into the circulating coolant. For portability, the system runs on a high-capacity LiPo battery pack capable of delivering up to 5 kW, protected by a battery management system and enclosed in a custom brass housing.
To control brightness, the builder designed a mechanical panel where a single large knob simultaneously adjusts six voltage regulators through linked potentiometers. An Arduino monitors water flow, pump speed, and temperature sensors, automatically cutting power if a failure is detected to protect the expensive LED. When tested outdoors, the 25-kg rig produced an astonishing beam capable of lighting entire forest areas, even igniting a match indoors using focused visible light energy.
