What is the reason for the excessive charging current of the battery for a long time? 20

1. The reason why the charging current is too large.

The regulator is faulty. For example, the voltage regulation is too high, the low-speed contact of the regulator is sintered, the high-speed contact is poorly contacted, and the magnetizing coil or temperature compensation resistor of the regulator is burned.

The battery loses too much power or has an internal short circuit.

2. Judgment method.

Check whether the power cord of the regulator and the two binding posts of the magnetic field are connected incorrectly.

Remove the magnetic field wiring of the regulator, if the charging current is significantly reduced, it means that the regulator is faulty, otherwise it may be that the battery loses too much power or has an internal short circuit.

The regulator cover should be opened for inspection if the regulator fails, and it is generally a low-speed contact or a high-speed contact with poor contact.

Hello: I don't know if you're charging in the car or under the car with the charger. If the car is charged with the generator of the car itself, the problem is due to a problem with the regulator.

If the charger is used for charging, it is estimated that it is caused by a slight short circuit inside, and it may be caused by the active material falling off, the separator being damaged, etc.

If the ammeter current is too large in the car, it is generally the generator regulator is broken, if it is charged with a charger, the current has been too large, which is generally caused by the vulcanization of the battery plates It is estimated that the battery life is not long.

There is a problem with the generator, or regulator.

Something must have gone wrong with the voltage regulator of the generator.

When the charging current is too large and too long, it will cause the battery to heat up, swell and lose the battery moisture, evaporate, and easily cause the battery lead plate to fall off and age, affect the battery performance, and shorten the battery life.

The output voltage of your charger is too high, and the charging current of the 100ah battery should not be greater than 10A, otherwise it will affect the service life of the battery.

Generally, the charger has a current adjustment switch, and you can turn it down. If your charger does not have a current regulation switch, you can add a resistor or heating wire to the output to reduce the charging current. Also, pay attention to whether your charger's ammeter is accurate.

Summary. The charger charges the car battery, the larger the charging current, there are 3 possibilities, one is that the charger is broken; Second, the battery is broken; Third, the charger and battery are broken. 1. If the charger is broken, it is easy to measure the voltage with a multimeter to know, the highest charging voltage of the charger is generally about that, and if the voltage exceeds this more, the charger must be broken.

2. If the battery is broken, it can be judged by the bubbling situation of each plate, because the larger the charging current, the more bubbling there is, if the bubbling between the two plates is obviously less than the other, this grid must be damaged. 3. The charger and battery are broken, and often the damage of the charger (such as the voltage rises, resulting in excessive charging current) is likely to cause battery damage (thermal runaway). Similarly, damage to the battery (e.g., an internal short circuit resulting in excessive charging current) is likely to cause damage to the charger (thermal breakdown).

Why does the battery charge flow increase when it is charged?

I will find out for you why the charging current is larger and larger when the battery is charging, and the reason is that the charger is broken.

The charger charges the car battery, the larger the charging current, there are 3 possibilities, one is that the charger is broken; Second, the battery is broken; Third, the charger and battery are broken. 1. If the charger is broken, it is easy to measure the voltage with a multimeter to know, the highest charging voltage of the charger is generally about that, and if the voltage exceeds this more, the charger must be broken. 2. If the battery is broken, it can be judged by the bubbling situation of each plate, because the larger the charging current, the more bubbling there is, if the bubbling between the two plates is obviously less than the other, this grid must be damaged.

3. The charger and battery are broken, and often the damage of the charger (such as the voltage rises, resulting in excessive charging current) is likely to cause battery damage (thermal runaway). Similarly, damage to the battery (e.g., an internal short circuit resulting in excessive charging current) is likely to cause damage to the charger (thermal breakdown).

Summary. 1. The charging current is too large, the charging speed is fast, and the battery life is short. 2. The charging current is too small, the charging time is too long, and the battery state is safe.

If the charging current is too large or too small, what is the adverse effect on the battery?

1. The charging current is too large, the charging speed is fast, and the battery life is short. 2. The charging current is too small, the charging time is too long, and the battery state is safe.

The most reasonable charging current should be used in a phased fixed-current charging method, that is, a larger current is used in the initial stage of charging, and after charging the battery for a certain period of time, it will automatically change to a smaller current, until the end of the charging period, it will automatically change to a smaller electric orange midstream to create a perfect battery charging state.

Precautions when charging the battery: 1. When charging the lead-acid battery, wear protective clothing. 2. When charging, there should be no sparks near the battery, and smoking is prohibited.

3. When charging one or more batteries in parallel, the charger voltage should not exceed 16V. 4. Connect the positive pole wire of the charger to the positive pole of the battery, and connect the negative pole wire to the negative pole of the battery. 5. When turning on the charger, first set to the lowest current, and then gradually increase the trapped current until the battery begins to accept the current.

In the case of a battery that has been discharged or a battery that has been placed at a low temperature, this process may take several minutes.

Dear, you refer to the above teachers, I hope to help you, I wish you a happy life!

1. If in the later stage of discharge, the internal resistance of the battery will be relatively large, that is, the initial charging current will be relatively small, and the charging will be normal for a while.

2. After the voltage of the battery slowly normalizes, the current seems to increase.

3. If the current is still within the rated range, it will be fine. Otherwise, look into the cause.