Product Features: Working environment temperature -20 +50°C Starting environment temperature0 +50°C Waterproof degreeIPX3 Continual illuminate time≥120mins Brightness1000lm Bulb life-span≈3000hrs Irradiation distance≤500m Color temperature6000K (Option:4200K, 5000K, 8000K, 10000K) Optical efficiency50LM/W MaterialALU Weight1.1kgElectricity parameters: Ballast input voltage 9 16V Working voltage12.6V Working current2A Starting max current8A Power output20W Output temporary max voltage:23KV Battery modeICR18650X3S2P(440000mAh) Battery charge voltage12.6V ± 0.1V Battery lifespan (charge and discharge times)≥500 times