How much can a roadside fast charger charge in 10 minutes?

[LaAngelo]

Generally, the charging current of a fast charger is 10A, so charging for 10 minutes equals 1.666AH. Based on a vehicle's driving current of 10A, it can run for 10 minutes. At a speed of 30KM/H, this translates to approximately 5KM. Below is more information about fast charging: 1. Frequent fast charging accelerates battery cell polarization: During the charging process of lithium-ion batteries, the diffusion rate of Li+ inside the electrode is much slower compared to the electrolyte. The internal diffusion of the electrode is the controlling step for Li+ diffusion rate. Since the migration rate of Li+ inside the electrode particles is far less than the electrochemical reaction rate occurring on the surface, this leads to concentration polarization in the electrode, further increasing the deviation of the positive and negative electrode potentials from the equilibrium potential. 2. Frequent fast charging may cause lithium plating: Under fast charging or low-temperature conditions, lithium ions may precipitate on the surface, forming dendrites (also known as lithium plating). Dendritic lithium can pierce the separator (SEI), leading to secondary loss of Li+ and reducing battery capacity. When the amount of lithium crystals reaches a certain level, they can grow from the negative electrode toward the separator, posing a risk of battery short-circuit. 3. Most batteries are designed with reasonable charging strategies based on battery factors: If users frequently charge their batteries through fast charging, it can indeed cause damage to the battery. However, due to differences in battery cell density, materials, ambient temperature, and battery management systems, the extent of damage during fast charging varies. Currently, most batteries are designed with reasonable charging strategies based on factors such as remaining battery capacity and battery performance, adjusting charging power to minimize the damage caused by fast charging.