In this case, most of the problems are battery and charger. ;
1. Battery damage;
Second, the battery and charger do not match;
Third, the use of inferior charger; Judging from the situation you have described, it is mainly the battery itself that has a problem, and it is recommended to take it for repair or replacement. ; Expand data; The charger can not be used carelessly, otherwise it will cause great harm to the battery; In our daily life, this situation is not uncommon. Each car has its own charger and cannot be mixed.
Because the maximum current of the 48V12Ah charger is less than the numerical requirements of the 48V20Ah battery, the battery will be undercharged due to the small maximum current during initial charging; At the same time, because the conversion current of the 48V12Ah charger is far lower than the numerical requirements of the 48V20Ah battery, the jumping lamp time during charging will be far extended, resulting in too long battery charging time, which may lead to bulging deformation. ;
On the contrary, if the 48V20Ah charger is used to charge the 48V12Ah battery, because the maximum current of the charger is greater than the requirements of the 48V12Ah battery, it will cause the active material of the plate to fall off, and long-term use will shorten the battery capacity; At the same time, because the conversion current of the 48V20Ah charger is higher than that of the 48V12Ah battery, the lamp will jump in advance when charging, causing the battery to be charged. ; Therefore, please pay attention to the owners, to charge the electric car should choose the matching charger, but also pay attention to the maintenance of the battery.
First of all, when we plug in the electric car and charge it overnight, the next day is still under voltage and no electricity, then first of all, we have to check the charging port of the car, see if there is no rust oxidation of several poles inside, if there may be poor contact caused by no electricity, second, we can try to change a new charger to try, because the service life of the charger is about two years. So we can tell if the charger is damaged.
Third, all the wiring on the electric vehicle battery can be replaced to prevent the aging of the line.
Another is to ask professionals to test the battery, in case the battery has broken poles, bulging, such a case, the electric vehicle battery is also not charged into the electricity.
There are many reasons why the electric car is not charged, first of all, you can check whether the charger is broken, that is, the charger is in poor contact or low voltage, at this time, it is recommended to replace the new charger to try or to repair (note that the maintenance may not be repaired, may be directly damaged), there is one is that frequent charging of electric cars will also lead to reduced battery life, Many small partners are used to going out and coming home without looking at how much battery remains, charging directly, irregular charging will accelerate the corrosion and aging of the battery, and it will also be charged for a long time.
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The last point is that the fuse of the electric car battery is broken leading to poor contact, when charging, it does not have a complete route circuit, the amount of electricity charged to the battery is very small, forming a false amount of electricity, which is also a reason for charging discontent, at this time to see whether the power indicator has no matter, it is recommended that we replace the battery, to avoid the wrong power can not be used in the later stage.