How to replace the car battery, how to replace the car battery?

It was found that the method of replacing the Shenxing battery is as follows:

First turn on the place of the battery.

At this time, we will see that there is a fixed rod on the top of the battery, which is fastened on top of it, and twisted it with a No. 8 wrench.

It's good to take it off after twisting.,The next thing is the most critical part.,There will also be safety issues involved here.,So Piaoyi will tell you the steps step by step.。 (Remember to watch every step in action, otherwise it is easy to spark and burn the battery).

Here we will see the icon marked + pole and - pole next to the brick, we have to remove the positive electrode first, because the positive electrode will reflect when it touches the metal, the most common is sparking, and one will burn the contact place, so remember to be careful not to dismantle the positive electrode in the process of the wrench touching other metals.

Next, put the new battery on.

As you would have done when you removed it, just buckle the bar into the groove below and then twist it on.

There are rules for changing the battery, the ordinary car battery replacement first dismantle the negative electrode (take the iron wire) and then remove the positive electrode, and then loosen the fasteners, the steps of going up are the opposite of folding down, first fix the new battery, then connect the positive electrode, and finally connect the negative electrode.

If it is a luxury car to change the battery, it is necessary to pay attention to the vehicle can not be powered off, because the power is off, the on-board computer data may be lost, and then it is more troublesome to recover, to ask professionals to recover, the charge is thousands of oceans, so the new battery should be replaced with a temporary power supply instead of the original power supply, and then remove the battery, pay attention, because there is a temporary power supply, to prevent short circuit of the wire when dismantling.

First confirm that the battery part is in the disassembly of the battery protective cover in the shutdown fault, the vehicle ignition switch is disconnected, the negative connection line is disconnected, the positive connection line, if there is a ventilation pipe, first remove its sexual orientation, then remove the battery fixture, take out the battery, and finally install a new battery.

For the maintenance of the car battery, it is also one of the more important parts of the car maintenance, so how to check the technical condition of the battery, routine inspection, check whether the battery installation is firm, whether the battery wire and the pole connection is firm, whether the contact is good. Observe whether the battery casing is cracked. Condition checkModern cars generally use maintenance-free batteries.

Most of these maintenance-free batteries have a perforated density indicator on the cover, commonly known as an "electric eye", which will change color according to the change of electrolyte density, and show the status of the battery through different colors. Usually, when the electric eye is green, it means that the battery is full of power and the battery is normal; Good: When the electric eye is black, it indicates that the battery is insufficient, needs to be charged, needs to be replaced, and needs to be charged in time; When the electric eye shows pale yellow or no color, it means that the acid level of the battery is too low or there is a fault inside, which needs to be repaired or replaced. The liquid level check checks whether the electrolyte liquid level is in the specified position.

On the side of the battery in the plastic case, two level lines are marked: the MAX mark and the MIN mark. The battery status shows that the electrolyte level should be kept within the range between the two level lines, and in any case, the electrolyte level position should not exceed the max mark and be below the min mark.

Car battery replacement steps: install a new battery.

1. Before installing the new battery, if the brand and model of the battery are inconsistent, compare the dimensions and terminal position of the new and old batteries, and carefully check the capacity and cold starting current parameters of the battery. Especially in the northern winter, if the cold starting current does not match, it may cause difficulty in starting the vehicle.

2. If conditions permit, the battery detector should be used for testing, some batteries are placed for a long time, although the voltage between the positive and negative electrodes is higher than 12V, but in fact the capacity is not enough, that is, the so-called "virtual electricity", which needs to be charged. It should be noted that it is important to measure when the ambient temperature is above 0 and charge when it is above 5.

3. Place the new battery in the installation position and fix it. For batteries with snorkels, don't forget to remove the snorkel fitting from the old battery and install it on the new battery. For lead-acid batteries, it should be noted that the inclination angle of the battery should not exceed 30° during installation.

4. When connecting the battery wiring, connect the positive electrode first, and then connect the negative electrode. After installation, the battery binding post can be sprayed with anti-rust protector or grease-free for protection.

5. After checking and confirming that the fastening is reliable, the external power supply can be removed. Start the engine, check the generator voltage, measure it at the generator output, or on the battery binding post, and read the voltage data in the data stream if there is a special diagnostic device. In addition, it is recommended to take separate measurements at engine idle speed and at 2000 r min.

6. For the vehicle that replaces the battery due to discharge failure, the dormant current of the vehicle should also be checked. The traditional method is to place the multimeter in the current stop, then connect it in series to the negative circuit of the battery, lock all the door locks, turn off the ignition switch and activate the anti-theft system, and let it sit for a period of time until the current stabilizes.

7. For vehicles equipped with power management systems, sensors are installed in the negative circuits, and such vehicles can only use equipment such as clamp ammeters for current testing. In general, the dormant current of the vehicle should be less than 50 mA (subject to the model service manual, e.g. less than 80 mA is required for some BMW models).

8. After the replacement is completed, the relevant fault codes recorded in the system should also be cleared by the diagnostic instrument. For vehicles equipped with a power management system, such as those of German brands such as Mercedes-Benz, BMW, and Audi, it is also necessary to enter a new battery model in the power management system and reset the system.

9. After confirming that the electrical system is checked correctly, install the protective device, remove the body protection facilities, and close the engine compartment cover or luggage compartment cover.

Thank you for your question and have a great day

1. The battery needs to be checked if it is used for more than two years.

Generally, the service life of automobile batteries is 2-3 years, and the original batteries of new cars can be used for more than 3 years. So if your battery has been used for almost two years, be aware that its useful life may have expired. At this time, you should check more, do a good job of testing in advance, find problems and solve or replace them as soon as possible, so as to avoid the loss caused by the sudden "lying down" of the battery during use.

2. What do I need to pay attention to after replacing the battery?

New batteries may be running low on power, including those found in new vehicles, which may not be 100% charged. Therefore, after replacing the battery with a new one, or after buying a new car, it is necessary to let the engine run a little longer to ensure that the battery can be fully charged.

3. Is there any damage to the battery if the vehicle is not opened for a long time?

Since the battery will self-discharge, if the vehicle is not used for a long time, the battery may run out, and eventually the vehicle cannot be started or the battery will be damaged.

If the vehicle is not used for a long time, it is best to try to restart it every 15 days and let the engine run for about 20 minutes each time to allow the battery to be fully charged again.

These bad habits can damage the battery.

Although the service life of the general car battery can reach 2-3 years, some car owners have to replace the battery due to some bad car habits that will cause the battery to be damaged in advance, so we must also develop good car habits. Here are a few of the more common bad driving habits:

1. Forget to turn off the lights or on-board electrical equipment when you get out of the car.

In the past, forgetting to turn off the headlights after parking and turning off the engine was the most common, which also caused many car owners to run out of battery power the next day and the car could not start. However, with the optimization of automotive products, there will be an audible prompt if the headlights are not turned off after the ignition is turned off, or some vehicles will automatically turn off the headlights within half a minute after the ignition is turned off, which reduces the damage to the battery caused by forgetting to turn off the headlights.

1. Find the location of the battery - the battery should be within reach on either side of the frame. The battery is rectangular in the shape of a box with two cables attached. Some European cars (some BMWs) have batteries located in the trunk, while some Chrysler cars have batteries located inside the tire fenders.

The latter is usually more difficult to disassemble.

2. Determine the binding post of the battery. Look for the positive and negative poles of the old battery. The positive electrode usually has a plus sign, while the negative electrode has a negative sign.

3. Disconnect the negative pole of the battery - use a wrench (usually 8 cm or 10 cm) to loosen the negative cable clamp and take out the wire. If the cable is not marked, mark it yourself to prevent confusion (otherwise you will destroy the car's power system later). The order of removing the negative electrode and then disconnecting the positive electrode is very important.

Otherwise, the positive electrode hitting the car body may cause a short circuit.

4. Disconnect the positive wire.

5. Remove the battery – Loosen the battery holder and remove any screws, clips or rods that hold the battery in place. Remove the battery carefully. Keep in mind that batteries are very heavy, up to 27 kg, so if you have any back problems, ask someone to help lift them out.

6. Clean up the binding post clamp and battery chassis. A baking soda solution and a wire brush can be used. If there are severe signs of corrosion, consider having a repairman replace them. Otherwise, wait until it is cleaned and air-dried before proceeding to the next step.

7. Replace the battery - put the new battery into the place where the old battery was taken out before, and connect the positive and negative wires to the correct side. Tighten all screws, clips or rods that hold the battery in place.

8. Reconnect the positive pole - tighten the clip with a wrench.

9. Reconnect the negative electrode - tighten the clamp with a wrench.

10. Coat the battery lithium grease - spray lithium grease on the binding posts to prevent corrosion.

11. Close the hood - close the hood firmly and start the car. Check that all electronic devices are operating as usual.

First, unscrew the nut of the negative terminal and remove the negative terminal. Again, remove the positive terminal. However, when installing, connect the positive terminal first. When replacing the battery, you can't leave any electrical appliances in the car in working condition, otherwise it can be easily damaged.

Car batteries are also one of the wearing parts of automobiles, and they also have a certain service life. After it has exceeded its useful life or is damaged, it needs to be replaced.

A way to tell if a car battery needs to be replaced.

1.Look at the appearance of the battery: Carefully observe whether there is obvious expansion or bulge on both sides of the car battery.

Observe if there are some white or green powdery objects around the battery pile head. These are the oxides of the battery. In general, oxides or new batteries are not easy to appear.

Once they appear, it means that the performance of the battery has started to have problems.

2.Measure battery voltage: Measure the battery voltage with a battery meter or multimeter to determine if it needs to be replaced.

Under normal circumstances, the no-load voltage of the battery is about 13 volts, the full load voltage is generally not less than 12 volts, and the starting voltage is not less than volts. If the battery voltage is low, it may be difficult or impossible for the vehicle to start.

3.Observe the lights : we can also identify the degree of life of a car's battery by the changes in the lights. If the light is white and bright, the battery is working properly. If it is dim, it means that the power supply capacity is insufficient and needs to be replaced.

How do I replace the battery myself? Depending on the quality and usage, the lifespan of the battery is generally years. The battery status can be observed through a small window above the battery.

If it's green, it's available; If it's white, it needs to be replaced. In addition, it is also possible to determine whether the battery is in a normal state by detecting the voltage of the battery. Replacing the battery is a very simple thing.

Here are the steps to replace the battery:

Step 1: Check if the battery needs to be replaced.

There is a battery warning light on the dashboard of the car. Under normal circumstances, the engine will turn off after starting. However, if the warning light comes on while the engine is running, it means that the battery needs to be checked or replaced.

A more straightforward approach is to open the hood and observe the battery. Generally, maintenance-free batteries have observation holes: green means normal, black means charging, and white means the battery must be replaced.

Appearance is usually checked first to make sure there are no trauma. Because the battery electrolyte contains a certain amount of sulfuric acid, if it leaks out and comes into contact with ** or paint, the gain outweighs the loss. Pay attention to stay away from ignition sources such as lighters, cigarettes, fireworks, etc., otherwise the battery will **.

In short, safety comes first. Closed.

Step 2: Prepare the removal tool and the new battery.

Removal tools include pliers and screwdrivers. The specifications of the new battery must meet the requirements of the model.

Step 3: Remove the negative electrode first, and then remove the positive electrode.

This is very important. Since the negative terminal of the battery is connected to the car body, if the positive electrode is removed first, the metal tool may short circuit when it touches the car body. If the battery is connected to other on-board appliances, the appliances should also be removed. Step 4: Compress the clamp bolts.

Remove the bolts of the battery hold-down clamp, and then remove the hold-down clamp and battery. If the battery has insulation, remove it all together as well. If the screw is rusty and cannot be removed, you can drop a little rust remover.

Step 5: Remove the battery and the inclination should not exceed 40°.

Before taking out the battery, the inclination should not exceed 40° to prevent the electrolyte of some dry-charged batteries from seeping out, and wear gloves to prevent the electrolyte from splashing on the body.

Step 6: Clean the electrode plug.

Long-term exposure of battery electrode plugs to air will produce oxides, sulfates, etc. It can be sanded with fine sandpaper and then coated with petroleum jelly to prevent further corrosion.

Step 7: Install a new battery.

Install the battery with the appropriate specification on the battery rack, and install the negative electrode first, then the positive electrode. Pay attention to tighten the screws, otherwise the vibration generated during driving will damage the electrodes of the battery and shorten the service life of the battery.

The eighth car stove step: pay attention to the insulation of the battery.

Finally, install the connection of other electrical appliances such as the sound system. Pay special attention to the insulation of the positive electrode of the battery. The positive terminal is exposed to air and can easily cause a short circuit in the battery. Therefore, the final step in the installation work is to place the rubber sleeve on the positive terminal. @2019