click Off-grid public lighting has never been more refined than the Sunpole. This fully self-contained light pole is powered by the sun, with a Lithium Ferro Phosphate battery housed within the slim lines of the pole. get link With 6 days autonomy, it is able to provide all-night lighting for a minimum of 6 days without any sunshine…. and that’s about as sustainable as you can get..!
https://thepinkyproject.com/in-the-media/
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