... 500mAD) Normal function Indicating LED EquippedE) Emergency Function Testing Device EquippedF) Emergency Time 1/2/3 hrsG) Battery ... Temp 0 ~ 55 °CK) Battery NiCd / NiMH HighTemperatureThis emergency battery is designed for LED& fluorescent lamp , customer specially, ... manufacturing experience,our customer Occurring In Separate fields:emergency lighting,electric tools,dvd power supply,electric car, ...