... °CMeasure-110 x 75 x 16MMWorking temperature- -10°C-40°CShort circuit Protection-Device and all ... N2 power bank, while battery capacity below 30%, first light flashing, the other does not light up ... charge to 30% - 50% battery capacity, the first lights no longer flash, the second light start flashing ... the 4 LED lights. After batterycapacity lower than 10%, the first LED light will be flashing, now need ...