Why does an electric vehicle lack power at startup but runs fine afterwards?
3 Answers
Electric vehicles lacking power at startup but running fine afterwards may be caused by voltage issues or battery problems, and specific troubleshooting should be conducted by a 4S shop. Below is relevant information about electric vehicle batteries: 1. Optimal battery temperature: Since the optimal temperature range for battery cells is 0-40°C, temperatures that are too high or too low can affect the activity of the cells, cause irreversible damage, and even impact battery lifespan. When charging an electric vehicle, if the battery temperature is below 0°C, the battery needs to be preheated before charging, which also prolongs the charging process and is detrimental to battery maintenance. 2. Battery usage precautions: During vehicle charging, the battery pack temperature rises. If the temperature difference is too large, it can trigger chemical reactions in the active materials on the positive and negative plates, thereby shortening battery life. Conversely, when the battery temperature is too low, it reduces the battery's storage capacity, making it prone to over-discharge, which further shortens battery lifespan.
Having driven electric vehicles for over a decade, the issue of sluggish acceleration is quite common and closely related to battery condition. During cold starts, the low battery temperature results in insufficient power output, causing weak acceleration and perceived lack of power. After driving for a few minutes when the temperature rises, the output normalizes without major issues. This phenomenon becomes more noticeable in colder weather, especially during winter morning commutes. It's recommended to preheat the battery for a few minutes and avoid aggressive acceleration initially—start gently and gradually. Regular battery health checks are also important; if significant aging is detected, consider replacement or upgrades to substantially improve performance. Developing these habits leads to smoother driving and greater peace of mind, preventing unexpected breakdowns.
As someone who frequently tinkers with cars, lack of power during acceleration in electric vehicles is often caused by minor issues in the control system. It could be due to insufficient sensitivity of the accelerator pedal sensor or software-imposed torque limits to prevent wheel spin during takeoff. The troubleshooting process is straightforward: first, try restarting the vehicle's system to see if the issue resolves; if not, check for error codes or use a mobile app to update the software. If the car runs fine once it gets moving, it indicates the problem isn't major and won't affect daily use. However, don't overlook the details—regular maintenance of the control system at a professional shop is essential. Replacing components isn't expensive, and it's far better than waiting until major repairs are needed, giving you peace of mind while driving.
