Need to detect the voltage of the battery, the battery is more prone to this situation for a long time, especially in the case of low temperature weather, even if charging for a night is not useful, the battery has been aging, has no chemical reaction, the battery's storage capacity is reduced, coupled with the low temperature environment, the material activity is reduced, it will cause no charging.
< br >
In addition, check whether there is a problem with the charger of the electric car, in another car to charge the car, if you can give another car with the same battery model fully charged, then the charger is not broken, otherwise there may be a problem with the charger.
< br >
1, first of all, the output plug of the charging box has no power transmission to the battery, if the green light on the charging box is still on the second day, it proves that the charger to the upper 220V power supply is normal, but it cannot prove that the output of the charger is normal, some output rectifier diodes will breakdown, and some input fuses between the battery are broken, or there is accidental poor contact.
< br >
Identification criteria: Find whether the voltage of the output jack of the multimeter charger is consistent with the nominal value on the charger, and then measure how much the voltage of the socket of the battery is, if the line is through, but the voltage is low, then:
< br >
2, the battery has been riding for more than two years, the mileage is much, there is aging, the specific performance is:
< br >
The electrolyte in the battery evaporated and dried up, and without the electrolyte plate, it could not be charged, so there was only a little electricity to charge overnight.
< br >
3, the battery in a grid plate break, only a little electricity, the whole series path in the plate break becomes conductive by the electrolyte, when the motor starts the voltage drops rapidly, there is only a little electricity.
< br >
4, if one of the batteries is found to be lower than 11V, the battery is broken, at the repair point to replace an old battery with waste pick. If it is a water bottle is not a one-time battery can add distilled water, otherwise it can only be replaced with a new one
< br >
Electric car charged overnight battery is not fully charged, first look at the charger plug and electric car interface is not firmly connected, charging and charger connector is not disconnected, if the connection is not the problem, either the battery self-discharge, or the charger out of the problem. It is recommended to change the charger to try, if it is not the charger problem, it is the battery is broken, it is necessary to replace the battery in time.