... Rated Voltage:3.7V Begin lighting:>1000Lx Lighting 11h:>500Lx Lighting time:24h Battery life:>500tim Rated SAFETY 4AH Li-ion explosionproof LED ... has over-voltage, over-current, over-discharge, over-temperature protection, short circuit protection and other automatic protection function, and use of safe, SAFETY 4AH Li-ion explosionproof ...