Solar Flood LightLED Economy Solar Flood Light Features: The material of battery is LiFePO4 no fear of high temperature, it can resist 85 high temperature, longer lifetime. The material of solar panel is Polysilicon which can save more cost. High cost effective and much more suitable for promotion. LED Economy Solar Flood Light Datasheet: Model No Power Lumen Time Light Time Battery Material Solar Panel G NEP TYTGD0102570M 50W 400lm 4 6Hrs 8 12Hrs 32650 LiFePO4