Standard No.: JB/T5871-1991 Chinese Standard Name: Line Charging Current Opening and Closing Test for AC High Voltage Circuit Breakers Chinese Standard Classification No.: K43 Part Replacement Standard: The original standard number GB4876-1985 has been replaced by the following standard: IEC56-1987, non equivalent; IEC427-1989, non equivalent use 1> How to measure the voltage of a battery: The voltage of a battery can be measured using a pointer multimeter or a digital multimeter. Method: 1. Select the range of the multimeter (1.5V, 3V, 6V, 9V); 2. Connect the red lead to the positive pole of the battery, and the black lead to the negative pole of the battery. 2> How to measure the charging and discharging current of a battery: To measure the current of a battery, still use a pointer multimeter or digital multimeter: Method: 1. Select the mileage of the multimeter (100mA, 500mA, 1A, 5A); 2. Connect the multimeter in series in the circuit; 3. The red pen allows the current to flow in, while the black pen allows the current to flow out; 4. Electrical appliances must be connected to the circuit, and the ammeter must not be directly connected to both ends of the battery
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