Should New Energy Vehicles Be Fully Charged During Fast Charging?
3 Answers
Whether to fully charge depends on the actual situation. If you need to travel long distances, you can charge it fully. For short-distance use, you can charge as needed. Below is relevant information about new energy vehicles: Introduction: New energy vehicles refer to automobiles that use unconventional vehicle fuels as power sources (or use conventional vehicle fuels with new onboard power devices), integrating advanced technologies in vehicle power control and driving, resulting in advanced technical principles and featuring new technologies and structures. Types: New energy vehicles include pure electric vehicles, extended-range electric vehicles, hybrid electric vehicles, fuel cell electric vehicles, hydrogen engine vehicles, etc.
I've been driving a new energy vehicle for almost two years now, and I generally avoid fast charging to full capacity. This is mainly due to battery lifespan concerns—fast charging involves high current and elevated temperatures, and charging to 100% every time accelerates battery degradation, gradually reducing the range. I use the car's app to set the charging limit to 80% or 90%, which is more than enough for daily commuting—it speeds up charging while protecting the battery. I only occasionally charge to full for long trips; for city driving, cycling between 20% and 80% is ideal. Temperature also plays a big role—in winter or summer, it's better to fast charge to partial capacity to avoid additional stress. Since adopting this habit, my car's battery health has remained excellent.
From a battery science perspective, fast charging to full capacity isn't the optimal choice. Continuous fast charging of lithium batteries at high state of charge causes internal voltage spikes, accelerating electrode material degradation and reducing overall lifespan. Most automakers recommend maintaining charge levels between 20%-80%, as stopping at 80% can mitigate thermal runaway risks. I frequently consult manuals and online forums, discovering that partial charging actually reduces maintenance costs. Battery management modules are designed with this consideration, and mobile apps can easily set charging limits. This operational approach proves safe and efficient for daily use, ultimately making EVs more durable long-term.
