The test principle of the battery tester, how to see the results of the car battery tester?

For automotive batteries, the cold start current is the most important index, which is displayed in the unit of cold start current, in order to make it more intuitive for users to use. When the conductivity meter is used, enter its rated CCA value according to the labeling of the battery, and then the instrument will measure a conductivity CCA value, and the instrument is through the comparison of the difference between the two CCA values to determine the health status of the battery, so the vast majority of countries in the world use cold starting current for the labeling of the battery, and the international industry has basically adopted the conductivity test method in recent years.

The provisions of the International Institute of Electrical and Electronics Engineers (IEEE) standard 1118-1996 have become the test principle and judgment basis for conductivity automotive battery testers. (1) As the basis for judging whether the battery is replaced.

2) As an acceptance tool when the battery is received.

3) As a tool to prove the value of battery performance.

4) As a checking tool before the battery is shipped.

5) As an identification tool for battery claims.

The working principle of the electric vehicle battery tester and how to use this principle I activate the battery.

What do you think of the results of the car battery tester? 1. When using, connect the battery detector to the battery for 10 15 seconds, and keep the voltage at it, indicating that the capacity is sufficient and the battery is fault-free;

2. The voltage is kept at the same time, which means that the capacity is insufficient and the battery is not faulty;

3. If the voltage drops to below, it means that the capacity is seriously insufficient or the battery is faulty.

The above is just a simple battery detector, which can only measure the battery voltage in the state of high-current discharge, and roughly judge the storage capacity of the battery. In addition to start-up discharge, the most advanced battery testers can also accurately measure the cold start current (CCA), such as the WDKR-J battery discharge monitor. Hope to adopt!

Judging the quality of the battery can be used instrument testing and empirical methods:

1. Instrument test: Generally, the battery discharge tester is used, and the two positive and negative measuring pliers of the tester are clamped respectively to hold the positive and negative electrodes of the battery, and the test button is pressed to observe the indication of the test instrument

1. If the meter indicates that the voltage is more than 9V, the battery is in good condition.

2. If it is lower than 9V but the pointer is at a certain value and does not move, it means that the battery is in a state of power loss and needs to be recharged.

3. If the pointer slowly decreases, it means that there is a short circuit inside the battery.

4. The rapid drop of the pointer to 0V means that there is an open circuit inside the battery.

2. Empirical method: observe whether the battery electrolyte is turbid, and the turbidity indicates that the positive plate of the battery is softened. Observe whether there is sediment at the bottom of the battery, if there is an indication that the plate is falling off, the capacity of the battery is insufficient.

Tap the two electrode piles of the battery with your hands, and if you hear a cavity sound, it means that the pole piles and plates are broken. Use a thick wire to short-circuit the positive and negative electrode piles to observe each dosing hole of the battery, if a bubble is found in a certain space, it means that the spacer has been damaged.

How to judge (test) the quality of electric vehicle batteries?

1. If you find that the electrodes of the battery have white or blue-green powdery crystal accumulation, use a wire brush and sodium bicarbonate solution to clean the electrodes in time to ensure that the electrodes and cables are in good contact.

2. Check whether the battery is safely fixed on the battery rack, if there is looseness, tighten the fixing bolts, excessive shaking will shorten the service life of the battery.

3. Regularly check whether the electrolyte in the battery is reduced, if necessary, add distilled water, but do not excessively, the normal liquid level height should reach the bottom of the water injection hole.

4. Check whether the battery wire is tightly connected to the electrode, as loose joints will cause the car to fail to start.

5. Carefully inspect the shell of the battery, if the battery has cracks, it needs to be replaced in time to prevent corrosive electrolyte leakage.

First of all, it depends on whether the battery is the original battery or the same type of battery, the same model refers to the voltage, capacity, cold start current and whether it is AGM.

If the battery has been replaced during this period, it may be the battery reason, if the battery has not been touched, it is recommended to go to the 4S store to test the start-stop system.

If the battery has been replaced, it may be the battery reason, if the battery has not been touched, it is recommended to go to the 4S store to test the start-stop system to determine the cause of the failure.