wind&solar street lamp 3, the poles were: 6-12 m high, hot-dip galvanizing spray. 4, ambient temperature: -50 degrees to + ... , overcharge, over-release protection. 3, the poles were: 6-12 m high, hot-dip galvanizing spray. 4, ambient temperature: -50 degrees to ... days, 10 days -15 days. 6, light sources and efficient high-power LED. 7, special waterproof battery solar lamps. 8, lamps ...