1. Divide the characteristics of the power storage electrode planning
The generally commonly used battery bottles are played in the production plan. Its battery pile is a positive electrode. The other end is a negative electrode, which can identify the color of the battery pile column, and the positive electrode pile column is dark brown, while the negative electrode is deep gray. In addition, some of the positive and negative symbols of the battery are indicated by the English alphabet, that is, the P is indicated as the positive electrode, and n is indicated as a negative electrode, which can not make mistakes when repairing charging.
2. Select multimeter voltage gear measurement
You can use the multimetric dial to the DC gear, and the two tablets are connected to the two electrodes of the electric storage bottle, and when the battery exhibits the normal voltage value, the electrodes touched by the red tone pen are shown to the battery positive electrode. And the black table pen is negative electrode. Sometimes the battery has no normal voltage, and the weak storage capacity of the battery can be measured. When the two table brings touch the battery electrode, if the meter is slightly swayed to the right, it is proved that the red pen is the battery positive electrode. The black table pen is a negative electrode. However, it is assumed that the multimeter pointer is hosted to the left (the needle needle), then the red pen is attached to the negative electrode of the battery.
3. Select the wire short circuit to identify
The two copper core power lines are connected to the old battery electrodes to be determined, and the electrolyte (concentrated brine) is poured into a glass cup and pierced the power cord in the tea cup, and The respective edges of the glass (two wires cannot be touched in the cup), then investigate the bubbling conditions of the respective leads in the electrolyte, assume that a wire bubble is obvious and more Multiple. Then explain that one end of the power line coupling battery is a negative electrode, and there is a small bubble and the end is not clearly the positive electrode of the battery.
4. Using rectifier diode determination
The rectifier diode in the power supply regulator has a unidirectional conductive function to find a rectifier diode. A 40W incandescent lamp. Then press a pile column → diode + terminal → diode - end → incandescent lamp → the other piode of the battery, and constitute a light series circuit. At this time, if the incandescent lamp in the road is lighted, Then it is shown that the diode pole is connected to the electrodes of the battery, and the other end is the negative electrode of the battery.
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