Durable & Long Service Time This Solar high bay light fixture comes with an Iron+PC shell which features great thermal conductivity, it can improve high energy efficiency and keep the LED chip works in low temperature, and make the light durable for long working time. High Quality Solar Panels Fast energy storage, 20% higher photoelectric conversion rate, and with a built-in lithium battery, it only takes 6-8 hours to fully charge. Energy Save No electricity cost, entirely solar powered and wireless installation, which can save your cost. This Solar high bay light is suitable for oil fields, petrochemical, drilling, chemical enterprises and other inflammable and explosive dangerous places; and all kinds of platform, workshop, oil tank area, probation area, transfer station, control room, pump room, and other fixed lighting workplace, etc. 2 year warranty ensures this will quickly become your favorite no-risk purchase.