How long does the battery last in a Jetta when powered on but not started?

[AbigailLee]

The battery in a Jetta can last for about two hours when powered on but not started. Below are precautions for using car batteries and an introduction to battery lifespan. Precautions for using car batteries: Avoid storing the battery in a discharged state. A discharged state refers to when the battery is not charged promptly after use. In this state, sulfation is likely to occur, where lead sulfate crystals form on the electrode plates, blocking ion channels and leading to insufficient charging and reduced battery capacity. The longer the battery remains idle in a discharged state, the more severe the damage. When the battery is not in use, it should be charged once a month to extend its lifespan. Car battery lifespan: The lifespan of a car battery is generally around 2 to 3 years. The battery's lifespan is largely influenced by driving conditions, road conditions, and the driver's habits. During daily use, try to avoid using vehicle electrical equipment when the engine is not running. If the vehicle is parked for an extended period, the battery should be disconnected. For vehicles frequently used for short trips, it is necessary to periodically drive at high speeds or use an external charger to recharge the battery.