High-energy and non-memory battery is featured by large capacity, no pollution, excellent charging and discharging performance and low self-discharge rate. Imported high power LED, energy saving, high luminaire and the life span can reach 100,000hours.
The switch has mal-operation proof function. The light can continuously work for 15hours, adjudgeable lighting angle.
Besides the strong light function, it  has added the strobe signal function.
It has a charge, discharge, current limiting and voltage limiting protection function.Nominal voltage: 3.6V
Rated capacity: 4.4Ah
Rated power: 3W
Luminous flux: 100Lm
Everange life time: ≥100,000h
Contimuous disacharge time: ≥15h(strong light); ≥50h(stroboscopic light)
Discharge time(after battery depleted):  ≤8h
Battery service life: ≥1,000subcycle
External dimensions: L86mm*W75mm*H57mm
Weight: 0.2kg
It is applicable to provide mobile lighting for electric power, petrochemical, oil field, troops, mines, public security, and other worksite, and ,may use for signal contacts and signal azimuth display.Quality of QC590A is controlled strictly according to the ISO 9001 standard, 3-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.