I removed the two batteries of the electric car and charged them, why can t one of them be charged?

Can you be sure that it can be charged normally before removing it for charging?

There are two reasons: 1. It may be that the battery has been used for too long and cannot be charged normally, that is, it has been damaged.

2. It may be that the charger has been broken, or the internal circuit of the charger is damaged, or the connector of the wire is damaged, resulting in poor contact.

Your condition is not good, whether you remove it and still use the original charger or use other faulty charger may cause it. There are also the two batteries you said, the general should be 4 batteries, and the removal must be 4 batteries in series before they can be charged, and the two batteries cannot be charged because the general charger output is more than 50V, and the voltage of the two is 24V when it is charged.

First check if there is a problem with your charger, the two batteries you said, are they two? Or two groups? If there are two, the output current of the charger must reach 26V, and if it is a group of one impulse current, it must reach 50V.

See if the battery's cable is detached.

To connect the two battery boxes, one of the battery boxes has a 30 cm line on it, the battery is connected in series two groups to be connected, if your battery box has no wire is fixed installed in the car, you should match a connecting wire yourself, pay attention to the positive and negative poles.

Hello! Could it be that the charger is broken? Or for other reasons, put it back in the car and try it. Or go directly to the local after-sales service to test.

You're talking about two batteries! Then there are two power cables connected to each other, and then the charger! Let's see if we can fill it up.

How do you know that the other one can't be charged, you should connect the two batteries with a connection cable to charge them together, otherwise it will affect the battery life.

Check if the polarity is reversed?

If you find that the battery cannot be charged after a long time, you can check whether the charger is normal firstIt may be a poor contact caused by the aging of the circuit. In addition, you can check whether there is a problem with the inside of the battery car, and you can check it yourself or ask a professional master to deal with it.

Check whether the rated input voltage of the charging is consistent with the power supply voltage, the battery can be charged directly in the car, but the power switch must be turned off, or it can be removed and taken to a suitable place such as indoor for charging.

Please connect the output plug of the charger to the charging jack of the battery properly, and then connect the plug of the charger to the 220V AC power supply. (Note: Do not connect the positive and negative poles of the charger output).

Battery maintenance

1. It should be fully charged before use. Newly purchased electric vehicles should be fully charged before use. Because many electric vehicles have been shelved in stores for several months, or even more than half a year, they must be fully charged before use, and it is best not to use them immediately after sufficient power, but to stand for about ten minutes.

2. The battery should be installed firmly on the electric bicycle. When the battery is taken down and charged, when installed, the battery should be installed firmly on the electric bicycle to prevent the battery from being damaged by vibration when riding. When the battery is transported, it is forbidden to throw, roll over, or weigh hard.

3. Keep the battery dry and clean. Frequently remove the dust and dirt on the battery cap, and pay attention to keeping the battery dry and clean to prevent the battery from discharging itself.

Hello, happy to serve you!

The battery car can not be charged for too long because the battery has a loss of power, in this case, each single battery in the whole group of batteries can be charged, so that it is easier to activate the battery. If the battery of the electric vehicle has a serious power deficit, you can use a 12V charger to charge each battery, because the battery is placed for too long, so it will take longer to charge. There is a charger with a repair function on the market, if the battery loses power, you can use a charger with a repair function to charge the battery, no matter how volts the battery voltage is, the charger with the repair function can charge it.

The battery car relies on the battery that can store electricity, which has a lifespan, and the solid and liquid power storage objects in it have no effect after a long time. You can try to fully charge it a few times, whether it can increase the power storage capacity of the items inside, if not, it will have to be replaced.

The life of the battery is generally about 2-5 years, if used and maintained properly, it can be used for more than 5 years, and if it is not used and maintained properly, it will be damaged early within a few months.

This problem in electric vehicles may be due to the expiration of the battery life; The fuse is broken; poor contact; Problems with the wiring, damage to the electrical appliances.

The battery of an electric vehicle is not charged and undercharged is usually caused by these points:

1. The battery life is at the end of its life. Solution: Replace or repair the battery;

2. The fuse in the fuse tube in the battery is broken. Solution: Replace the fuse;

3. Poor contact between the battery fuse and the fuse seat. Solution: Adjust the position of the two to make good contact, or replace the fuse;

4. The charger has no output voltage or low output voltage. Solution: Replace or repair the charger;

5. The charger is in poor contact with the AC 220V power supply. Solution: Replug the power supply;

6. The charger indicator is abnormal, resulting in false fullness. Solution: Replace or repair the charger;

7. There is no voltage between the positive and negative leads of the dial. Solution: Poor contact of the connector or broken lead: re-plug or change the wire;

8. The light-emitting tube is damaged. Solution: Replace or repair the fluorescent tube;

9. There is an open circuit on the circuit board of the dial. Solution: Replace or repair the instrument circuit board.

Note: Correct use can play a role in prolonging the life of the battery to a certain extent. Now I will give a brief introduction to the correct way to use it:

1. It is not advisable to charge after riding.

The life of a battery is determined by the number of charge-discharge cycles, and the more times it is charged-discharged, the faster the life will be reduced. Therefore, you should not just ride an electric car and then charge it, but should master it when the maximum mileage of the battery is 60%-70%.

2. The charging time should not be too long.

Many EV users believe that the longer the charging time, the more battery power there is. This is very wrong. The charging time is generally extended within one hour after the charger is changed.

Long-term overcharging can easily lead to battery deformation, water loss and other phenomena. Thus directly jeopardizing battery life.

3. It is best to use a smart socket.

Many electric vehicle users go home from work to charge, and cut off the power when they go to work the next day, in fact, most chargers cannot 100% guarantee that the battery will automatically turn off when the battery is full. The best way is to buy a smart socket and set the time when charging, so that you can solve the problem of resting at night.

4. It is strictly forbidden to exercise without electricity.

Recharge the electric car until it can't be ridden, which seriously damages the battery performance. Multiple deep discharges can drastically reduce battery life. If the power is not sufficient on the way, it is best to pedal the assist in advance to avoid deep discharge.

5. Do not charge when the temperature is too high or too low.

The battery itself will generate a small amount of heat during the charging process, and charging at too high a temperature will increase the temperature of the bottle and damage the performance of the battery. The temperature is too low. The battery has poor receptivity, weakened activity, insufficient battery power, increased number of charge and discharge, and shortened battery life.

If there is no false connection or false contact of the charging line, and you are sure that there is no problem with the charger! The reason is the problem of the battery, you say that the voltage of the battery is only 40 volts, that is, the voltage of the battery is too low, resulting in the inability to charge. Measure the voltage of a single battery, if the voltage of the four batteries is basically the same, there is nothing wrong with the battery, if the voltage of one battery is lower than the voltage of the other batteries, the battery is broken!

Another way to measure is to plug in the charger and charge it, and measure the voltage of the four batteries separately, if there is a battery whose voltage rises too fast, that battery is broken! Cause the charge to not be charged! If none of the above phenomena are mentioned!

You can find a high-current charger to charge your battery for 2 or 3 hours, and then use the original charger to charge the battery! Your battery is 10 or 12ah, you can charge the battery with a 20ah charger! If it's a 20ah battery, you can charge the battery separately.

Use two 20ah chargers to charge each battery for 2 to 3 hours. Then connect the four batteries and charge them with the original charger! If you are a customer, you better look for after-sales directly, because in the warranty!

If you are a maintenance person, you can try my method! If it really doesn't work, the battery will be returned to the factory!

It didn't take long for the electric car to have a problem and the fuse broke.

It's a lithium battery, and if you rush into 10%, you can't rush in, and if you rush into the electrical appliance, you won't be able to rush in, what's going on?

You observe whether the electrolyte is sufficient, and if so, whether it is a big impact. Whether the electrolyte is discolored. If you have something to add me q, I hope you can accept it.

Open the battery compartment and measure the voltage of a single battery, the battery may not be able to be charged, and it is also possible that your charging plug is broken.

1. Fault phenomenon.

First of all, check whether the connection of the charging circuit is reliable, check whether the contact between the wire and the plug is intact, carefully check whether the socket and plug have the phenomenon of "ignition" arcing, whether there is line damage and disconnection, etc.

Check whether the charger is damaged and whether the charging parameters meet the requirements: that is, the initial charging current reaches only; The maximum charging voltage reaches only, the charging floating charge conversion current reaches only, and the floating charge voltage reaches only.

Check whether there is any drying phenomenon inside the battery, that is, whether the battery is seriously lacking liquid. The plates should also be inspected for irreversible sulfation. The irreversible sulfation of the plates can be determined by measuring the change in the terminal voltage of the plate by charging and discharging.

When charging, the voltage of the battery rises very quickly, and the voltage of some single cells is particularly high, which is much higher than the normal value; The voltage drops particularly quickly when discharged, and the battery does not store any or very little power. In the above situation, it can be judged that the battery has irreversible sulfation.

2. Inspection and treatment of faults.

Connect the charging circuit firmly first, and replace the charger if it is abnormal. Dry batteries should be supplemented with pure water or sulfuric acid, and the battery capacity should be repaired, charged, and discharged. If irreversible sulfation is found, an equalization charge should be performed to restore the capacity.

The maximum current should be controlled for maintenance and charging of dry batteries after liquid charging, charging for 10-15 hours, and the voltage of the three batteries should be only above as well. If the voltage difference between the cells is exceeded, the cells have developed irreversible sulfation that is out of sync. For batteries that have irreversible sulfation, the entire group of cells needs to be replaced or the batteries activated.

1) Whether it is a brushed motor or a brushless motor, there will be a certain amount of mechanical noise (brushed) or electromagnetic resonance (brushless) during operation, which is a normal phenomenon. However, if the brushless motor produces abnormal vibration and sound during operation, the power lock should be turned off in time and repaired.

2) When the electric vehicle moves backwards, it feels that the rear wheels are reversing heavier, which is a normal phenomenon. When the electric vehicle feels a lot of resistance when it is pushed forward, first disconnect the motor power supply (which can eliminate the positive resistance), and then overhaul it in time.

3) The motor generally does not need special maintenance during normal use, usually pay attention to check the fastener status of the shaft end of the motor hub and the end cover of the motor, if it is found that there are loose screws or nuts, it should be tightened in time to prevent vehicle failure caused by the twisting of the wires and other reasons, which will affect the safety of use.

4) When driving on a waterlogged road surface on a rainy day, the depth of water accumulation should not exceed the lower edge of the electric hub to avoid motor failure caused by water seepage of the motor.

OK. If you find that the inside of the battery of the electric car is much larger than when you first bought it, it means that it is full of gas, and it is completely damaged at this time and can no longer be used. Even if the user can charge it, the battery life is very poor, so when you find that the battery has become larger, you must replace it.

If you find that the battery temperature of the electric car is very high or even a little hot when charging, it is said that it is about to die. It may be because some elements inside are constantly precipitating, and then increasing the power when charging, so that the battery will become very hot, at this time, the charging is fast, the power consumption is also very fast, maybe four or five times a day.

Absolutely, there is that kind of charger, and the end of the output cable is two clips, which is equivalent to a universal charge.

According to the specific instructions, don't blindly disassemble on the line, mine can be removed and charged, according to the specific indicators of the car, it can generally be removed, otherwise those friends who live upstairs usually charge it, right, look at the manual, remember that the interface can not be plugged in after removal.

You can remove the charge by yourself, and the charging needs to be fully charged.

First of all, you can disassemble the battery according to the following method:

1. Remove the dust first, observe and remember the connection position of each line, and take pictures that have been verified.

2. Dismantle the negative electrode first and then dismantle the positive electrode battery clip, which can ensure that the pipeline will not ignite due to the iron of the tool when removing the positive electrode, and the positive electrode should be installed first when installing it.

3. Remove the battery fixing screws and remove the battery.