A protective resistor is used to prevent the battery from being charged by large surges of current during diode failure. Please set the resistor so that the maximum current shown in the right table is not exceeded. For example, say an ER6 battery is used in sample circuit A in combination with a main power source 5 volt. Since the permitted charge current is 100μA and this battery’s voltage is 3.6V, let the resistor be R>= (5V-3.6V)/100μA=14k ohm, meaning that at least 14k ohm is required.
This battery is a high energy density sealed battery containing dangerous (Lithium) and deleterious (Thionyl Chloride) materials. For this reason, improper handling of the battery could lead to distortion, leakage*, overheating, explosion, fire, or generation of irritating/corrosive gases, causing bodily injury or equipment trouble.