The electric car battery is out of power at all, and it can t be charged?

<> lithium iron phosphate battery for electric vehicles.

If it is a lithium battery, as long as it is emptied, it is equivalent to being scrapped, and the lead-acid battery can also be repaired and activated, so it must be charged once a month on average even if it is not used.

Before buying a lithium battery, see if the battery cell used is a product, the quality of the battery determines the quality of the battery, such as capacity and energy density, etc., and then find a lithium battery produced by a large manufacturer, the production process is mature, the after-sales service is guaranteed, and the lithium battery market reference price is 1250 yuan. If you need to run long distances, it is best to install a range extender, with which you are not afraid of running out of power halfway, it can help you gallop without worry.

Because the cruising range of low-speed electric two-wheeled vehicles is still relatively limited, can not fully meet the daily travel needs of the public, if you want to increase its cruising range, you can install a range extender, in order to increase its cruising range, increase its range of activities, meet the daily travel needs of the public, realize the freedom of travel, no longer due to the lack of power halfway and difficult.

It is not recommended to start the range extender when the battery is full, and it is generally recommended to start it when the battery is only 30%-40%. There is no particularly good effect when starting when the battery is full, in order to be environmentally friendly, it is recommended to start the range extender when needed, battery pollution is more serious than exhaust gas pollution, and protecting the battery is to protect the environment. It is not recommended to use it when the battery is not a little charged, the range extender is electric when it starts, and it may not catch fire when the battery is not charged at all.

The electric vehicle battery is discharged, and it cannot be charged with a smart charger, and the smart charger needs to detect the voltage of the battery first, and it cannot be charged if the detection voltage is too low.

You need to activate the battery first, you can go to the place where the car is repaired to activate, or you can find a good group of batteries of the same voltage, connect them in parallel with this group of batteries, and charge this group of batteries with an electric battery for about an hour to activate.

If it is a lithium battery, the lithium battery has a characteristic that it is damaged after discharge, and the battery has been damaged.

If it is a lead-acid battery, the battery life will be reduced by 80%, and the older battery will still be damaged. If the new battery is already dead, it can still be charged.

This car has no electricity at all, charging can not be charged, charging never enters, that is the battery, it may be that there is a problem with the battery, you have to sell the battery car, then the ground after-sales service will repair it for you, this is also an electric car, the battery is also the design of electronic products and convenient.

This is an over-discharge of the battery. Causing the battery to be scrapped. No way. Only the battery can be replaced. Peacetime. The battery can't be put too dry. It's going to be charged.

The battery has been placed for a long time and the battery runs out, resulting in battery vulcanization, and it is recommended to replace 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.

The battery is activated and charged to continue use.

Answer hello, (1) check the power supply, poor contact with the power supply leads to no charge: this is a very easy event, according to the data, 30% of users will be unable to charge or not charge because of poor contact with the power supply, at this time what needs to be done is to unplug the power supply, plug it back in, ensure that the contact is unhindered, and then see if it is not charged or can not be charged. If you do not pay attention to the metal oxidation caused by moisture on the plug and socket during use, you should use a small file to get the oxide out.

2) Check the production date of the battery, the battery can not be charged when it reaches the end of its life: no matter how good the product is, there is also a service life, so when you find that the electric vehicle battery cannot be charged, you should carefully recall that it has been a few years since you purchased and used, whether it is within the normal range of years, if it has exceeded the life, then, it should be replaced or repaired in time. c) Check the line:

When the contact between the fuse tube and the fuse seat is poor, there will also be the situation that the electric vehicle battery cannot be charged or is not charged, at this time, the user who knows more about the electric vehicle battery can adjust the position of the two to make it contact well, so that it can solve the problem of insufficient charge, or can not be charged.

Kiss! Hello, if you think my answer is helpful to you, remember to help me like it later when you have time! Thank you very much!

The following reasons are the reasons why electric vehicles cannot be charged:

1. Check whether the circuit connection is in good contact and whether the charger is mixed.

When charging, check whether the socket and charging cable are working properly to avoid the situation that the charger cannot be charged due to the failure or loosening of the socket. When charging, the charger adapted to the electric vehicle itself should be used to avoid using chargers of other models and models, resulting in invalid charging.

2. The plates inside a certain battery are broken.

For lead-acid battery packs, if the charger and battery wiring are normal but cannot be charged, there is no doubt that the plates inside a battery are broken.

3. The battery is seriously bulging, resulting in the electric vehicle not being charged.

4. If the battery is left for too long, the voltage is too low and the charger cannot be charged.

The battery will be greatly damaged if it is not used for a long time, and it is common for the battery to enter a dormant state, so that it cannot be used normally, or more seriously, the battery liquid inside the battery will dry up. For such cases, the easiest way is to try to charge with a lower model charger first, and then change to the original charger when the voltage comes up.

It is best to find a maintenance point for repairs related to electric vehicles, do not disassemble the internal components without permission, and regularly overhaul the battery.