... safety performance of lithium-ion battery is high, with shatter-resistant and stab-resistant, under high temperature and freezing conditions, it is ... )KWH/year1016LengthMM7917WideMM8418Diameter(lamp holder)MM8219The Whole Weight of the LightGram(g)230 LED head light, professional LED head lamp, outdoor LED headlight, low power-consumption LED headlight