Why did the car's rearview mirror suddenly stop retracting automatically?

[LeNolan]

The car's rearview mirror suddenly stops retracting automatically because the battery is disconnected or out of power. When the car is almost out of power, it does not display many question marks, but many warning lights will illuminate. Below is an introduction to battery-related content: Charging method: Use constant voltage and current limiting for charging. Duration: Charge for 16 hours at a constant voltage of 14.8V and a current limit of 15A, then charge for 4 hours at a constant current of 3A, totaling 20 hours. Below is extended information on battery charging voltage and current: Voltage: The charging voltage for motorcycles is 12V. During the charging process, the charging voltage is mostly between 13.5-14.5V. When charged in the vehicle by the rectifier, it does not exceed 15V. If using a charger, the charging voltage is generally 14V. Current: During the charging process, the charging current should not be too large. Car owners are advised not to use fast charging. When charging, use half of the rated charging current and extend the rated charging time by double.