What to do when the scum car battery is dead?
2 Answers
Here are the solutions for a dead scum car battery: 1. Push start: If the lights can still turn on, manual transmission cars can be started by pushing. Specifically, you can engage 2nd or 3rd gear. 2. Completely dead: If the battery is completely dead, you can temporarily use jumper cables to connect to another car's battery to start. 3. Jumper cables: To avoid being unable to charge when the battery is dead, car owners should prepare a set of jumper cables in the vehicle. Below is extended information about the battery: 1. Charging method: Use constant voltage with current limiting for charging. 2. Duration: Charge at constant voltage 14.8V with current limited to 15A for 16 hours, then charge at constant current 3A for 4 hours, totaling 20 hours.
Last night at the highway service area, I encountered a driver whose car battery had died. The quickest solution is to get a jump start from another vehicle. Remember to use thick copper-core jumper cables—first connect the positive terminals of both cars, then attach the negative cable to the rescue car's negative terminal and the metal part of the stalled car's engine. Wait two to three minutes after connecting before starting the rescue car, then attempt to ignite the stalled vehicle. I always keep an emergency jump starter in my car—it's about the size of a small power bank and good for three starts. If the battery is three to four years old, it's likely reached the end of its lifespan and should be replaced. There's an EFB-enhanced battery now that's particularly suitable for cars with auto start-stop systems. When stranded, place the warning triangle 100 meters away, and increase it to 150 meters in foggy conditions for safety.
