Should New Energy Vehicles Be Fully Charged During Fast Charging?

[WillowRose]

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.

[MacKiara]

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.

[LeJayce]

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.

[MacLorenzo]

As a family car owner, we don't advocate for full fast charging. The car is mainly used for picking up kids and grocery shopping with short trips, so charging to 70%-80% is sufficient for stable range. My husband always reminds me not to charge it too full to avoid premature battery failure and extra costs. After setting the upper limit in the car's system, it's just one click to charge, hassle-free. Occasionally forgetting to charge it fully is fine, but making it a habit might double the repair bills. Battery health is crucial for the family's safe travel, so we regularly check the charging settings to ensure no resources are wasted. This method is simple and practical, easy for beginners to adopt.