How long has it been since I bought an electric car and it can't run far
Time：
2022-10-24 11:41
Source：
"What's the matter with an electric car that can't run far after just buying it for a year? Professional car repairers have analyzed that when the battery of an electric car has been used for more than a year, there is a problem with not running far, 30% of which may be due to a problem with the charger, and 70% of which may be due to a problem with the battery.".
However, the battery problem mentioned here does not mean that the entire set of batteries has problems. As we all know, a set of electric vehicle batteries consists of several small batteries. For example, the 48V12AH battery is composed of four 12AH small batteries.
When electric vehicle batteries cannot run far after being used for more than a year, it is necessary to detect whether each small battery is charged and discharged normally. There are usually two detection methods:
The first method: Use a multimeter to check whether the voltage of each small battery is around 12V. If the voltage of a single battery lags behind, far below 12V, and only a few volts, it indicates that there is a problem with this battery.
The second method: Connect the positive and negative electrodes of a single battery with a wire. If there is a large spark, it indicates that the battery interior is normal. If the spark is small or cannot produce a spark, it indicates that there is a problem with this battery.
When a single defective battery is detected, simply replacing the defective small battery can solve the problem that electric vehicles cannot run far after being used for more than a year, which can also allow car owners to solve the problem with less money.
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