... / constant voltage mode; high precision, low noise;Hold up time: 20mS Min; 6). Environmental:Operating temperature: 0 °C -40 °C, 5 ... 1.Charger Shell:Good Fireproof material,enoughhardnesss,wear-resistant,good temperature-resistance,not easy to be broken. 2,Charger Cable ... :Designed by standard pure aluminum sheet, good heat cunducting,low temperature,high material cost. 4,Key components:The master chip ...