How can you tell if the battery is out of power because of the battery itself or the generator?

Focus on each light, the normal width indicator light in the flame-off state for more than 3-5 hours of continuous on-fire will not ignite, continuous 7-10 hours of battery voltage drop is very low! There are also trunk lights and compartment lights, these small lights, the original bulb power consumption is not small, especially the trunk lights, if the trunk does not pay attention to the end, then it will be miserable for a long time (about 2 days will not catch fire).

If there is no problem, remove the battery cable to string the ammeter test, and check the installed electronic equipment one by one, but it is recommended that the original car should be checked in 4s.

There is also a battery and generator after replacing the battery, light the fire and work for a short time, test whether the battery voltage can be reached, if it is insufficient, the generator power may not be enough or there is a fault.

What is the combination of battery and generator? Is it charged?

Here is one of the easiest ways to test the battery:

First, disconnect the motor and use a metal wire (a thin copper wire the size of a hair in the flower thread) to short-circuit the positive and negative poles instantaneously.

The result is: if there is a spark, then the battery is normal; If there is no spark, the battery is low or the battery is broken. The size of the spark indicates the size of the battery, and if the wire is burned off at the touch of a single wire, the battery is very charged.

In fact, the principle is very simple: give the battery an instantaneous short circuit to detect the internal resistance of the battery.

Note: During the detection process, please do not short-circuit for a long time, a long-term short circuit will have a greater impact on the battery, and the battery will be burned in serious cases, and the short-circuit time is recommended to be within 3 seconds).

If the battery is the same, it should be a problem with the generator.

The battery and generator on the car are for a lot of electrical equipment and maintenance, but if the electrical equipment is found to be faulty in the absence of power supply, we can tell whether the battery is broken or the generator is broken by the following methods.

If the vehicle fails to start under normal circumstances, it proves that the battery is dead or dead. It can be proven that the failure of the battery can be started by means of power-on. When the engine starts normally but stalls while driving, the generator breaks because the generator is not working properly and the vehicle shuts down automatically when the battery is depleted.

Car generators.

The symptoms of a broken one are as follows:

1. If the charging indicator of the car is always on, it is because the generator is broken, so it cannot be charged normally.

2. When the battery level decreases, electrical equipment such as headlights will begin to dim slowly;

3. When the internal parts of the generator are damaged, it makes a strange sound;

4. After the vehicle starts normally, the battery voltage is lower than 13V-14V.

Of course, this is just an easy way for us to judge the fault ourselves. If you want a more accurate judgment, it is best to find a professional repair shop or 4S shop for inspection.

In fact, the generator plays a very important role in the power supply and battery charging of other electrical equipment on the vehicle. So in order to prolong its working life, the following are a few tips for daily maintenance of generators:

1. Regularly clean the dust and dirt on the surface of the generator to maintain good ventilation and heat dissipation;

2. Regularly check whether the fixing bolts of the generator are loose;

3. Adjust the appropriate belt tension, too loose or too tight will affect the normal working state of the generator.

If it is a minor fault in the generator, it can be fixed by replacing the accessories. But if the copper winding in the generator burns out, it is recommended to replace it. Because the cost of replacing a generator is not particularly high, if it is a method of replacing internal parts, not only will it take time to replace, but a new generator is only part of the parts, so it is a bit redundant and a waste of time.

First of all, the motor must be cut off, and then the negative poles are short-circuited with metal wires, if the lightning flashes, it means that the battery is normal, if there is no cremation, it means that the battery is broken; If the generator is broken, the battery will gradually decrease in power, and the parts and accessories inside will also make abnormal noises.

Go to a repair shop or shop for an inspection. Specialized instruments are used for testing. When the generator breaks, the lights on the dashboard dim, the battery or accumulator is damaged, and the engine belt does not turn.

You can go to a professional repair shop or 4S shop to check, to use special instruments to detect, after the generator is broken, the light of the dashboard will be dimmed, the battery or battery will also be damaged, and the leather strip of the engine will not rotate.

After getting into the car, turn on the top lights and stare at the moment when the lights are turned off, look at the brightness of the lights:

Isn't it a little darker?

If so, the generator is normal.

If not, it means that no electricity is generated.

Measure the battery voltage when you hit the car, and increase the voltage when you accelerate, which means that the generator is good.

Connect the two poles of the battery with a universal meter, start the car, the voltage is higher than 13V, the generator is trouble-free, and vice versa....

The easiest way is to turn on the headlights after starting the car at night, the light is weak, and if the light does not change after the gas pedal, the generator does not generate electricity. If the light turns bright, it means that there is a problem with the battery. Leakage or non-storage of electricity, etc.

How can you tell if the battery is bad or the mold rubber motor is bad? Charge the battery for a long time, see if the battery window can display green, according to the color can determine whether the hand-coded smart battery is damaged or the generator is damaged. The signs of a car battery failure key are as follows:

1. Difficulty in starting the car: In the absence of other factors, if the car suddenly has difficulty in starting, it may be a precursor to the imminent failure of the battery. 2. When the car is idling, the light becomes dimmed:

For example, when waiting for a red light or temporarily stopping, the headlights suddenly dim because the charging power of the engine decreases when idling. 3. The battery fault light is on: when the battery fault light is on, it reminds the owner that the owner should go to the repair shop for battery maintenance testing.

4. Usually drive normally, occasionally after parking and then start, it is found that the whole car has no electricity: this is because when the battery life is approaching, the starting current is not enough, resulting in the increase of oxide in the battery joint, and the problem of no electricity in the whole car. @2019

The battery is broken and cracked, it can't be started under normal circumstances, and it needs to be charged to start. If the generator is broken, the vehicle can start normally, but it will automatically shut down while driving.

You can use a multimeter to measure whether the battery voltage is at 12V, whether the ignition switch of the car is on, whether the vehicle circuit is energized, and test whether the generator pulley has suction power with a screwdriver, if so, normal. Batteries are an essential component of automobiles and can be divided into traditional lead-acid batteries and maintenance-free batteries. The design life of the battery is 27 months, and the average family car is not too expensive, and many new cars have batteries that last 3-4 years, but they must be replaced in about 2 years if they are replaced.

The car generator is the main power source of the car, and its role is to power all electrical equipment (except the starter) and charge the battery while the engine is running normally. Generators are part of the vehicle's electrical early gas system. Its main function is to power your car to operate the starter and all the electronic accessories.

If the generator starts to malfunction, you may notice that your headlights and/or dashboard lights are starting to dim. Once the instrument or headlight is dimmed, this is a clear sign of a potential AC generator motor failure. Communication attenuation can cause other electronic accessories, such as power windows and/or power seats, to run slower than usual.

Millions of car purchase subsidies.

The battery is broken, it can't be started under normal circumstances, and it needs to be charged before it can be started. The generator in the wear gear is broken, and the vehicle can start normally, but it will automatically turn off while driving.

You can use a multimeter to measure whether the battery voltage is 12V, turn on the ignition switch of the car, and the whole car circuit is energized, and use a screwdriver to test whether the generator pulley has suction, and if so, it is normal.

Batteries are an indispensable part of automobiles and can be divided into traditional lead-acid batteries and maintenance-free batteries. The design life of the battery is 27 months, the general family car is more economical, and the battery of the new car is used for 3-4 years, but it must be replaced after replacing it once in about 2 years.

The automobile generator is the main power source of the car, and its function is to supply power to all electrical equipment (except the starter) when the engine is running normally, and at the same time charge the battery. The generator is part of the vehicle's electrical system. Its main role is to provide power in your car to operate the starter fire and all the electronic accessories.

If the generator starts to break, you may notice that your headlights and/or dashboard lights start to dim. Once the instrument lights or headlights are dimmed, this is a clear sign of a potential alternator failure. The fading AC may cause other electronic accessories, such as power windows and or power seats, to operate more slowly than usual.

Photo by Gu Fan) @2019