What is the difference between fast charging and slow charging for new energy vehicles?
2 Answers
New energy vehicle fast charging and slow charging mainly differ in charging speed and charging port interfaces. Below is relevant information: 1. Generally, slow charging for new energy vehicles takes 8-10 hours to fully charge the battery, while fast charging only requires about an hour to charge the battery to 80% capacity. Fast charging is convenient and quick when driving on the road. When shopping or dining, it only takes 1-2 hours to fully charge the vehicle battery. 2. The advantage of fast charging is its speed, which saves time. However, fast charging uses direct current (DC), which has different requirements for the battery. Additionally, the high power of DC can affect battery lifespan over time. The advantage of slow charging is that it causes minimal damage to the battery and provides a more substantial charge, but its slower speed can sometimes lead to unnecessary inconveniences.
The most direct difference between fast charging and slow charging is the significant gap in charging speed. Fast charging is like a big eater, using high-power DC electricity to directly charge the battery, reaching 80% in just half an hour, making it especially suitable for quick top-ups during long trips. Slow charging uses household electricity, with the 220V AC to DC conversion process being gentler, taking a full night to charge completely. The impact on the battery also differs between the two methods—I've seen too many cases where frequent fast charging leads to rapid battery degradation. Batteries that are slow-charged over the long term clearly last longer, much like how chewing food thoroughly is healthier. Nowadays, most new car models support both modes, but manufacturers recommend using slow charging for daily use and reserving fast charging for emergencies—this configuration strategy is quite reasonable.
