Mi SU7 15yr/300k km – Too Low?

Latest Edition of “Xiaomi SU7 Answers to Users’ Questions”

In this edition, the topics covered include the differences among the three versions of Xiaomi SU7, how to choose the right one, and the battery design lifespan of Xiaomi SU7.

How many years or kilometers is the battery design lifespan of Xiaomi SU7?

The battery design lifespan of Xiaomi SU7 is 15 years or 300,000 kilometers. Therefore, under normal vehicle usage, you don’t need to worry about the battery’s lifespan. We provide detailed information about vehicle maintenance and warranty services in the user manual, and we hope everyone can read it carefully to understand better.

15 years or 300,000 kilometers means an average of 20,000 kilometers per year. Considering 250 working days a year and a daily commute of 60 km, you would already cover 15,000 kilometers just for commuting. If we subtract additional holiday travels and seasonal trips such as during the Spring Festival, the designated lifespan of 300,000 kilometers might seem a bit short. Even though the vehicle might not necessarily malfunction after reaching this limit, it can significantly affect the residual value of the vehicle.

Is it recommended to fully charge the ternary lithium battery of the Max version every time, and will it affect its lifespan?

The warranty and design lifespan of the ternary lithium battery in Xiaomi SU7 Max version are both designed based on full charging each time. Therefore, even if you fully charge the battery every time, you don’t need to worry about its lifespan. In terms of material characteristics, the optimal battery usage for ternary lithium batteries is within 20% to 80% of the capacity. If you have concerns, it’s recommended to fully charge for long trips and keep the charge at 90% or below for daily commutes.

Some users have reported incidents of being unable to unplug the charging gun from Tesla charging piles. What could be the reason behind this issue?

Recently, some users encountered difficulties in unplugging the charging gun from Tesla home chargers after charging Xiaomi SU7. We contacted the users through customer service and investigated the issue, with the findings as follows:

Upon analysis, it was found that after initiating the charging process, the vehicle’s on-board charger system (OBC) registered three consecutive errors due to severe unbalance in the three-phase voltage of the user’s community power grid. This led to the activation of the charging protection mechanism, rendering it unresponsive to the user’s unlock commands.

Due to variations in the voltage balance of each user’s community power grid, we will further optimize the operational mechanism triggering the entry into the charging protection mode via Over-The-Air (OTA) updates.

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