Should the car battery be replaced if it runs out of power?

[VanChase]

Whether the car battery needs to be replaced when it runs out of power depends on whether the battery can still be used. Judgment method: You can remove the battery and charge it to see if it can still be used. If it still doesn't work after charging, it means the battery's service life has expired or it is damaged, and it needs to be replaced. The following are the methods to deal with a dead car battery: 1. If the battery is dead and the car won't start, you can use the jump-start method. 2. First, park the two cars facing each other (as close as possible); 3. Then turn off the rescue vehicle to avoid excessive current burning out the battery cables, and turn off all electrical switches of the rescued vehicle; 4. Open the engine compartments of both cars (some cars have the battery in the trunk, such as BMW), locate the positive and negative terminals of both batteries (red "+" is positive, black "-" is negative), and connect them accordingly.

[DiTheo]

With over 20 years of driving experience, dead batteries are a common issue. You don’t necessarily need to replace the battery right away—first, try jump-starting it or connecting a charger to give it a boost. Replacement is only necessary when the battery is aging, typically after 3-5 years of use. Frequent battery drain could indicate a wiring leak or a faulty alternator; a simple voltage check with a multimeter can help—if it reads above 12V, replacement isn’t needed. Regular maintenance is key: clean the battery terminals periodically or drive for at least half an hour to recharge. In winter, battery performance drops in low temperatures, making it prone to draining. Storing it in a warm garage or using a thermal blanket can prevent issues. Only when repeated charging fails should you consider replacing the battery.

[AaronLee]

From a maintenance perspective, the issue of a car battery being dead doesn't necessarily mean immediate replacement is required. First, test whether it's due to insufficient voltage or aging. Use a multimeter to measure the voltage; if it's below 10V and continues to drop after charging, it might indicate internal corrosion or plate damage in the battery, in which case replacement is necessary. Otherwise, check the charging system for issues like the alternator or wiring problems. Generally, a car battery lasts about three years, shorter in colder regions. It's advisable to have regular maintenance tests at a 4S shop to avoid unexpected breakdowns. When replacing the battery, choose a brand-matching model, as improper replacement can affect the vehicle's electrical system.

[Prim]

When I first started driving, I also thought a dead battery meant it had to be replaced. Later, a friend taught me not to rush: first try jump-starting the car or using a portable jump starter. If the battery works normally for a few days after charging, it can still be saved; otherwise, consider replacing it. Signs of battery aging include slow starts or dim headlights, with a typical lifespan of three to five years. To prevent premature failure, always turn off lights when parked and avoid excessive use of air conditioning while idling. It’s best to have a trusted friend help check the battery or use simple tools to test the voltage—saving money and giving peace of mind.