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As the weather gradually gets colder, more and more car owners and friends begin to consult battery-related problems. Among them, there is a common situation that after the battery is fully charged, the electric car will lose two bars of power as soon as it accelerates. This phenomenon plagues many electric vehicle owners, but what is the problem?
First of all, some users don't ride their EV immediately after fully charging it, but leave it for a few days. In this case, the battery will self-discharge, i.e. the power will gradually lose and the battery voltage will drop. When the user rides again, the battery level drops rapidly, resulting in a situation where the battery drops two bars as soon as it accelerates. In order to avoid this problem, it is recommended that the battery should be kept fully charged when it is not used for a long time. The characteristics of lead-acid batteries require that they can neither be fully charged or overcharged, nor can they be under-voltage and not charged.
Secondly, the battery industry was called by the state in 2014 to begin to adopt cadmium-free internal formation process. While this process is environmentally friendly, it also has an impact on battery performance. One of the obvious effects is that the initial voltage of the battery is low, that is, after the battery is fully charged, it is easy to lose two bars of power as soon as it accelerates. However, as battery technology continues to mature, this performance gap will gradually narrow. After a full cycle of the battery, the performance will gradually improve and the service life will also increase.
The third reason relates to the dampness of the electric vehicle wiring. Bad weather or accidental water exposure can cause moisture on the lines of electric vehicles. When the line is wet, the resistance of the electric vehicle will increase, and the voltage of the battery will drop, which will cause the electric vehicle to lose two bars of power as soon as it accelerates. When performing battery testing, you need to make sure that the wiring is dry. Therefore, it is recommended not to use electric vehicles in rainy and snowy weather as much as possible to ensure safety, avoid power loss and reduce the loss of electric vehicles.
Finally, if the battery tests normally, but the EV still drops two bars of power as soon as it accelerates, it is likely that one of the small batteries is failing. Because the failure of a small battery can cause the voltage to become unstable, which can cause a brownout phenomenon during an acceleration. The maintenance master suggests that if a battery problem is found, either replace the battery with quality problems in time, or eliminate them one by one according to the above three reasons, and provide professional technical support to let customers have a clearer understanding of the performance of the electric vehicle.
In summary, the problem of dropping two bars of power as soon as you accelerate is usually not the problem of the battery itself. It can be due to self-discharge, changes in battery processes, moisture in the line, or small battery failure, among other reasons. Since most car owners have a limited understanding of the professional knowledge of the battery, it is necessary for the maintenance master to explain and judge according to their own professional knowledge. Regardless of whether there is a quality issue with the battery, it is crucial to provide good service and technical support to ensure that customers have confidence in the performance of their electric vehicles. The development of electric vehicles will continue to advance, and as the technology continues to improve, these problems will gradually be solved.
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