How Long Can You Listen to Music After the Car Is Turned Off?

[CassandraLee]

After the car is turned off, a 35Ah battery can play music for about 3 hours, while a 45Ah battery can last between 3 to 4 hours. Battery Capacity: The current battery capacity SOC (State of Charge) of the vehicle is equal to the remaining charge/usable capacity × 100%; however, these two values are generally measured indirectly through the ampere-hour integration method, which still has many errors. Moreover, as the battery degrades, these errors become increasingly significant. Power Battery: For power batteries, the discharge capability varies under different temperatures. For example, the usable capacity refers to the maximum charge (AH) that the battery can store in its current state. This value changes constantly, with the most obvious factor being aging. Over time, as the number of charge-discharge cycles increases, the usable capacity gradually decreases.