This light is designed completely according to the GB3836.1-2000 and 3836.-2000 standard, with the highest explosion-proof grade, and can work safely in any flammable and explosive places;
Adopting ten international high-end brand LED light sources, high luminous efficiency and low energy, the life span can reach 100,000 hours, can meet the requirement of the lighting time of all kinds of the work;
High energy and non-memory battery can be charged any time, and have equipped with over discharge protection function, lengthened the life span of the battery;
The light head can be fixed on the light body or other supports, can also be discharged for handheld use, or fixed on barometric lifting frame with lifting height range of 1.2-3meters. At the bottom of the light body, there are wheels, can be moved conveniently;
Fully-sealed technological design, can work properly in rain conditions and specially-made aluminum alloy shell can stand strong collision and impact.Nominal voltage: 24V
Rated capacity: 17Ah
Rated power: 30W
Luminous flux: 3600Lm
Everange life time: ≥100,000h
Contimuous disacharge time:  ≥20h(strong light);  ≥35h(work light)
Discharge time(after battery depleted): 16h
Battery service life:1,000subcycle
External dimensions: L219mm*W248mm*H648mm
Weight: 20kg
It is applicable to provide mobile lighting for railway, electric power, public security, petrochemical industry, oil field, metallurgy enterprise for field work at night, and applicable for places and cases need high brightness lighting as loading & unloading yard, patrol inspection, accident emergency repair etc..Quality of QC770B is controlled strictly according to the ISO 9001 standard, 3-year quality warranty(the light source one year quality warranty). Free maintenance service is granted for the troubles resulting from normal use within the 3-year warranty period, without materials and the repairing fee.