The electric car charger flashes red light and can t be charged?

1. The charger is faulty, causing it to display a red light all the time

If the EV charger fails, it is generally manifested as the internal components falling off or being damaged, which will cause the charger to fail to jump the light normally, or even fail to charge, causing the charger to display a red light all the time.

In this case, the only option is to replace the charger with a new one, rather than repairing it, because the charger is more troublesome to repair and it is more likely to cause problems again and cause the battery to overcharge. In addition, it is important to note that replacing a new charger requires the consistency of matching voltage and current.

2. The battery has a water loss fault, causing the charger to display a red light all the time

Many users usually do not pay attention to the maintenance of the battery, and blindly overcharging and high-current charging can easily cause electric vehicle batteries.

There was a water loss fault that caused the charger to show a red light all the time.

For this situation, the general solution is to add some replenishment to the battery appropriately, and it should be noted that do not add it yourself, and must be added by professional maintenance personnel, because the battery replenishment will more or less affect the performance of the battery.

Finally, it should be noted that if the battery has been charged, then the only option is to replace the battery with a new one to solve the problem that the charger keeps showing a red light.

3. One of the batteries in the battery pack has a short circuit, causing the charger to display a red light all the time

If one of the small batteries in the battery pack is short-circuited, it will not function properly when the EV is charging, causing the charger to display a red light all the time.

In this case, the user can use a multimeter first.

The voltage of each small battery is tested, and the one with the lowest voltage display is the short-circuited battery. For this situation, there are generally two ways to solve it, the first is to re-match, and the second is to replace the battery with a new one, so as to solve the problem that the charger keeps showing a red light.

Precautions for EV charging:

1. The battery power should be used up but not exhausted.

The battery should be used up before the first charge, but it should not be exhausted. When you buy a new EV battery, it won't be too full, but it's not too little, unless it's an old battery or an inferior battery.

Therefore, when using, the approximate distance that can be operated should be obtained according to the estimate of the merchant, so as not to run out of electricity or electricity. When the electric vehicle battery level has reached the last grid, it is necessary to consider not riding, and to prepare for charging.

2. The charging option is more assured during the day.

The battery of the electric vehicle should be fully charged when it is first charged, but it should not be charged. Charging during the day is easy to control the charging time, so that the battery will not be overcharged for the first time, which makes it easier to make the first chemical reaction in the battery.

Normal. 3. The first charge is 5-6 hours.

The charging time of the first charge of electric vehicle charging is about 5-6 hours, so that the battery can be fully charged, as mentioned in the previous note, the charging time during the day is easier to master. Subsequent charging can be slightly longer.

If the red light on your EV charger keeps flashing, it means that the battery or charger is malfunctioning. Do not continue charging, if you continue to charge, a misfire may occur.

The following reasons may arise for the flashing of the EV charger:

1. The converter of the charger is damaged and cannot be converted and charged, replace the charger resistor.

2. The battery is welded and checked with a multimeter.

3. The charger insurance burns out, and the charger is replaced.

4. If the power cord and the battery socket fall off and the contact is poor, check and replace.

The electric car is driven to no power, and the charging light turns green when charging, how can it be charged.

The electric car charger keeps the red light, but it can't be charged for any reason.

The battery is damaged or there is a problem with the charging cable, which needs to be checked, and the cause and solution of the electric vehicle cannot be charged first. If the charger fails, you need to replace the charger to try charging and troubleshooting, second. The battery is aging, and the internal resistance of the battery increases due to too many power losses.

As a result, the stove cannot be charged, and the battery needs to be replaced. Third. The smart charger used has a power-off protection function.

This type of charger needs a battery electric sensitive attitude voltage to activate the charger when it is working, and the charger can output current. The battery cannot be charged when the voltage is lower than the activation value, and it needs to be charged with a mechanically adjustable battery repair charger, and then it can be charged with a smart charger, which can be found where this kind of charger repairs electric vehicles, 48-volt batteries. When the voltage is lower than 40 volts, it cannot be charged with the smart charger, and it needs to be activated to more than 40 volts before it can be charged with the smart charger.

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After plugging in the EV charger, the indicator light does not light up due to:

1. The power cord is disconnected, check the circuit plug in the charger, and check whether the charger 220V is normal;

2. Rectifier circuit fault;

3. The circuit fuse in the charger is damaged;

v voltage is abnormal, and the power management chip is damaged;

5. The charger has no output.

The battery can be charged normally only after it has been repaired and all possible failure factors have been eliminated.

1) "Vehicle" means motor vehicle and non-motor vehicle.

2) "Motor vehicle" refers to a wheeled vehicle that is driven or towed by a power unit and driven on the road for personnel or for transporting goods and carrying out special engineering operations.

3) "Non-motorized vehicles" refers to vehicles driven by human or animal power and driven on the road, as well as motorized wheelchairs for the disabled, electric bicycles and other vehicles that are driven by power units but have a design maximum speed, empty mass and external dimensions that meet the relevant national standards.

There are two reasons why the red light is not lit when charging, one is that the charger is broken, you change a good charger to see if it can be charged, if it can be charged, the previous charger is broken, if it still can't be charged, it is a problem with the battery, and the second is likely to be a line problem, go back to the master to check the line!

There are two reasons for answering that the red light is not on when charging, one is that the charger is broken, you change a good charger to see if it can be charged, if it can be charged, the previous charger is broken, if it still can't be charged is a problem with the battery, and the second is likely to be a line problem, go back to the master to check the line!

It is recommended that you can rush to see first, some are because the signal is not lit, but it can be charged normally, if it really can't be charged, it's not too late to repair!

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There are five reasons why the indicator light does not light up after the electric vehicle charger is plugged in:

1. When the power cord is disconnected, check the plug to the circuit in the charger and test whether the 220V in the charger is normal;

2. Rectifier circuit.

Fault; 3. The circuit fuse in the charger.

burn-out; v voltage is abnormal, power management chip.

Damage; 5. The charger has no output.

How to check the problem: the charger is not plugged in, after connecting to the power supply, the large capacitor has a voltage of 300V, if the power supply is unplugged, the 2nd end of the large capacitor is still 300V voltage, then the starting resistance of the charger is broken, and you can switch it; If the 300V voltage is slowly dropping after unplugging the power supply, it should be that there is a problem with the circuit board of the charger, and then you can check whether the circuit board is desoldered.

The general voltage of the battery car is 36 volts, the capacity is 12 amps, the battery power is 36 volts * 12 amps = 432 watts, and the motor power of the battery car is 180 watts, 240 watts, 350 watts, etc.; If the charging time is calculated as 6 hours, the charging current per hour is 2 amps, and the charging capacity per hour is 36 volts * 2 amps * 1 hour = 72 watt-hours = kilowatt-hours.

kWh, 6 hours of shared power * 6 = kWh, if you add 20% of the loss of the charger, it will take the degree to charge it once. Due to the different charging currents, the length of charging time is different, but the total charging power consumption is about one degree.

1. The output fuse in the charger is broken.

2. The output line of the charger is broken.

3. The red light-emitting tube of the charger is damaged.

4. The severe sulfation of the battery plate makes the battery pack fail and cannot be charged.

5. The line from the charging socket on the battery box to the battery is not open, or the charging plug is not in contact with the socket, or the battery pack connection line is open or the fuse in the box is blown.

It may be a battery problem, take it and fix it.

It is likely that the copper foil of the internal switching transformer pin is broken, that is, the feedback winding does not work properly, and there is a repeated start-up state. If you can't see a break or open pin when you remove it, you can use a multimeter to measure it.

It may be that the filter capacitor capacity of the starting power supply has become smaller, which is the most common, and it is also possible that the output terminal is short-circuited and the charger protection is started and protected.

1. The converter of the charger is damaged and cannot be converted and charged.

Generally, the charger will be like this after a long time, maybe the battery is a little short of water, you can use a timing socket to control the charging time, generally not more than 8 from time to time; In addition, if you understand the circuit, you can also increase the conversion current of some chargers, generally only about 350mA, if you increase it to 450-500mA, your problem should be about the same.

2. The red light of the charger caused by the battery welding flashes again and again.

In this case, it can be welded with an electric soldering iron. If you don't have one, you can go to the place where the household appliances are repaired.

3. It may be caused by the charger insurance burning.

In this case, it is recommended to replace the charger.

4. It may also be caused by the power cord falling off and poor contact with the battery socket.

In this case, you should be able to continue charging by changing the power outlet.

We hope you find it helpful