GravityLight GL02 Portable Self Powered Led Lamp

GravityLight is a unique and innovative device that generates light from gravity. This portable hanging lamp is simple to setup and provides instant light in any non-electrified space. It includes 2 LED lamps providing lamp brightness of up to 15 lumens. No batteries, no charging required.

GravityLight is installed to provide a 6ft/ 1.8m drop of a 12kg weight. This weight is lifted by a person pulling the orange cord. A pulley system means the weight only feels like 3kg. Once lifted, the weight then falls very slowly (about 1mm / second).

This movement powers a drive sprocket, which rotates very slowly with high torque (turning force). A polymer gear train running through the product turns this input into a high-speed, low-torque output that drives a DC generator at 1600 rotations per minute.

This generates about a tenth of a watt to power the onboard LED and two SatLight LEDs. Together these produce a light more than 5 times brighter than a typical open-wick kerosene lamp.

Once the weighted bag reaches the floor (after 20 minutes), it is simply lifted to repeat the process.

The Benefits Of GravityLight

+ Instant light, any time

+ No running costs

+ No sun or batteries needed

+ Robust and reliable

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