Is the instrument used to detect the battery in the 4S store reliable? Will there be mistakes?

In general, the instrument for detecting the battery must be reliable. However, there is a possibility of errors, aging instruments or staff errors, which can lead to deviations in the test results.

Reliable, this instrument is tested every day, and it is still very reliable, but it is also possible to make mistakes.

The testing instrument is very reliable, and generally speaking, there will be no mistakes, so you can rest assured.

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.

This looks like a loss of power, not like bad, you use the charger to charge a try, my car has also had a situation in this situation, it can't move, rushed through a battery until more than a year has not had a problem, it is estimated that there is less sports car for commuting, all caused by the short-distance consumption of electric energy can not be replenished.

There are also many constraints on the size of the possibility, which are related to the battery life, vehicle condition, etc., for example, your battery has reached the limit of its life, and the 4S shop has been in a state of electricity during maintenance, resulting in excessive battery loss, etc., which may not ignite. Of course, it is also possible that the 4S staff deliberately damaged, this is not easy to say, even if the monitoring is adjusted, if he wants not to be noticed, it is very simple.

Notes: 1) "Vehicle" refers to motor vehicles and non-motor vehicles.

2) "Motor vehicle" refers to a wheeled vehicle that is driven or towed by a power unit and driven on the road for personnel or for transporting goods and carrying out special engineering operations.

3) "Non-motorized vehicles" refers to vehicles driven by human or animal power and driven on the road, as well as motorized wheelchairs for the disabled, electric bicycles and other vehicles that are driven by power units but have a design maximum speed, empty mass and external dimensions that meet the relevant national standards.

If the battery has been used for more than three years, the electrode has crystallization, and the bottle body has bulging, it is recommended to replace the battery.

Check the appearance of the battery yourself first, is there any damage? There has been no problem with the recent use, if there is, quickly change, if the use is normal, you can change it after a period of time, and finally I want to ask you, your battery has been used for a few years, if it is more than 8 years, it is recommended that you still change it to a new one.

Since the 4S store monitors that the battery is broken and asks you to replace the battery, it means that the battery is really no longer good, and the battery must be damaged. If you don't believe me, you can go find another one to measure the battery! If the result is the same both times, then it is estimated that it is really broken!

It's hard to say if it's bad, but it's probably a fact that it's not very good, because there are many possibilities for being bad. For example, some of them are unable to supply power, and some of them can still be powered but not enough to start smoothly, etc.

How to use the battery tester:

If you want to judge the quality of the battery, you can also use the empirical method to observe whether the battery electrolyte is turbid, and turbidity means that the positive plate of the battery is softened. Observe whether there is sediment at the bottom of the battery, if there is, it means that the plates have fallen off and the battery has insufficient power.

When using a battery detector to detect the battery, if the meter indicates that the voltage is above 9V, it means that the battery is in good condition, and if the meter indicates that the voltage is below 9V, it means that the battery is not in good condition and there is a problem.

The detector of the battery allows the battery to be discharged by the tester, and the positive and negative measuring clamps of the tester are connected with the positive and negative electrodes of the battery, the positive electrode is to the positive and tan sliding electrode, and the negative electrode is to the negative electrode, and then press the test button to detect whether the state of the battery is good or bad by observing the voltage on the instrument.

When the indicated voltage of the meter exceeds 9V, it means that the battery is in good condition; When the indication voltage of the meter is lower than 9V, it means that the battery is in a state of insufficient power, if the pointer is still slowly decreasing, it means that the battery has a short circuit, if the pointer drops to 0V immediately, it means that the battery has an open circuit.

If there is no abnormality in appearance, the UPS works in battery mode with a certain amount of load, if the discharge time is significantly shorter than the normal discharge time, after 8 hours of charging, it cannot restore the normal backup time, and the battery is judged to be aging.

The main functions of the car battery tester:

2. Alarm for battery internal resistance and voltage overrun.

3. The instrument adopts anti-AC ripple noise circuit technology, which makes the instrument test results more accurate and the test results more consistent.

4. The instrument has the function of quick retest and pre-start, and if human error is found during the test, it can be retested and automatically overwrite the original data.

Traditional battery testing methods.

1. The basis of traditional battery testing.

At present, almost all the batteries used in the world are batteries, the biggest feature of the battery is that with the use of the battery, the battery gradually ages, when the battery capacity is reduced to 80% of his original rated capacity, the capacity of the battery may be "diving" decline, although the battery may still be able to provide a certain amount of energy, but at any time may be scrapped. In the international and domestic battery industry, 80% of the battery capacity is taken as a critical point of the battery, and when the battery capacity is reduced to 80% of its original rated capacity, the battery needs to be replaced.

2. Determination of the health of traditional methods.

The traditional way to determine the health status of the battery is the discharge method, which generally tests the current actual capacity of the battery through discharge, so as to determine the health status of the battery. For automobile batteries, the International Battery Association (BCI) stipulates that at room temperature with a rated cold starting current value of 1 2 for 15 seconds, if the battery voltage is above, the battery has passed the discharge test and is a healthy battery.

3. Insufficient performance of traditional detection.

The traditional method of testing the battery with external load is insufficient, and the means are as follows:

1) The battery to be tested must be fully charged, at least, because the test principle is discharge, if the test object has been partially discharged, it will inevitably lead to the low voltage value of the measurement result and cause misjudgment;

2) For the same storage Busen pond, it is not possible to repeat the measurement continuously and get the same result. Since the test process is the discharge process, the battery under test must be recharged after the test before it can be measured again;

3) The test process emits a lot of heat, and it is impossible to test multiple batteries continuously;

4) The test process requires the tester to be well-trained, because the voltage value of the battery must be read out at the moment of discharge for 15 seconds, the level and responsibility of the operator will have an impact on the test conclusion.

4. The impact of traditional testing.

It is precisely because of the lack of traditional test battery means, battery dealers and car repair stations, car dealers often return good batteries as bad batteries to manufacturers, according to the United States' largest car battery dealer interstate statistics, in the return of the so-called bad batteries, 50% of the batteries are actually good, these batteries need to be charged, not replaced, this part of the good battery, just because of the wrong judgment, needlessly back and forth between the manufacturer and the dealer, causing each other's consumption in vain.

When in use, connect the battery detector to the battery for 10 15 seconds, and the voltage is kept at V, which means that the capacity is sufficient and the battery is trouble-free; If the voltage is kept in, it means that the capacity is insufficient and the battery is not faulty; If the voltage drops below, the capacity is seriously insufficient or the battery is faulty.

In daily maintenance and repair, it is true that the storage capacity of the battery can be quickly and accurately detected, but it is still necessary to use a battery detector. The battery discharge tester is mainly used for the discharge test of lead-acid storage land noise pool as a backup power source in the communication, railway industry and power DC industry. It can perform rapid capacity testing, **monitoring, and capacity check testing of batteries.

Instrument testing to judge the quality of the battery and early let empirical method.

Test: Use the battery discharge tester, clamp the positive and negative poles of the battery with the two positive and negative measuring pliers of the tester respectively, press the test button, and observe the instructions of the tester:

1.If the indicated voltage of the instrument is above 9V, it means that the battery is in good condition.

2.If it is lower than 9V but the pointer is at a certain value, it means that the battery is in a power-down state and needs to be charged.

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

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

Experience: Observe whether the battery electrolyte is turbid, indicating that the positive electrode piece of the battery is soft. Observe whether the bottom of the battery is stuffy and there is sediment.

If there is, it means that the battery capacity is insufficient when the plates fall off. Tap the battery's two electrode stacks with your hands. If you hear empty holes, the pole piles and slabs are broken.

Short circuit the positive and negative electrode stacks with a thick wire and observe each filling hole of the battery. If there are bubbles in a compartment, the compartment is damaged.