On May 24th, reports surfaced claiming that some Xiaomi SU7 users discovered a discrepancy in their vehicle's charging process. Despite the battery being labeled as 73.6 kWh, it actually consumed 87.86 kWh, exceeding by 14 kWh. This incident sparked discussions online, with terms like "reverse false labeling" and "ethical company" flooding the internet.
So, what is the truth behind this matter? Last night, Xiaomi Automotive responded and clarified the situation. They stated that this is not a case of "reverse false labeling" and does not result in additional electricity costs. Instead, it accurately reflects the real charging and discharging amounts.
Xiaomi Automotive provided a detailed explanation, outlined below:
To address this issue, it's essential to introduce a concept: the actual "electricity" (including charging and discharging amounts) may differ from the battery capacity stated in the product specifications. The labeled capacity is based on testing and is not a fixed value.
In the industry, batteries are typically labeled with 1C or 1/3C, representing the "discharge rate" or how quickly the battery discharges:
According to regulations, when Xiaomi SU7 was announced, it was based on the 1C standard. Therefore, the standard version of Xiaomi SU7 has a battery capacity of 73.6 kWh. When discharged at 1/3C, the standard version of Xiaomi SU7 can discharge up to 76.8 kWh.
It's evident that the amount of electricity discharged from the same battery varies based on different discharge rates. In real-world scenarios, lower discharge rates allow the battery to release more electricity, resulting in increased mileage.
Regarding charging, several factors come into play: initially, to ensure that new vehicles are delivered with the required battery level, the actual amount of electricity charged may exceed the labeled capacity. Additionally, due to differences in discharge depth, charging current, and battery management strategies, the actual amount of electricity charged may vary, potentially resulting in a higher charge.
In conclusion, Xiaomi Automotive simplifies this by stating that under moderate charging and discharging conditions, the amount of electricity charged and discharged can exceed the labeled capacity without incurring additional electricity costs.
Furthermore, the energy consumption displayed on the Xiaomi SU7 vehicle screen reflects the actual consumption and is independent of the charged amount and labeled capacity, ruling out any reverse false labeling scenarios.
