How long do I need to wait after jump-starting a dead car battery?

[VanMaria]

After jump-starting a dead battery, you should wait at least 30 minutes. Here are some tips for car battery maintenance: 1. Develop good in-car electricity usage habits: The most important thing for battery maintenance is to develop proper electricity usage habits. For example, avoid listening to the radio at high volume, charging phones, or using air pumps when the engine is off, as these can drain the battery. Frequent battery drainage will significantly shorten its lifespan. 2. Avoid prolonged vehicle inactivity: If the car won't be used for an extended period (e.g., 20 days or a month), either disconnect the battery cables or start the engine every two weeks and drive several dozen kilometers to maintain normal battery function. 3. Avoid connecting high-power devices directly to the battery: Many car appliances like refrigerators, vacuum cleaners, or inflators have high instantaneous power consumption. Instead of powering them directly from the battery, first start the engine before connecting these devices. This provides better protection for your battery.