Do I Need to Drive Around After Replacing a Car Battery?
2 Answers
Newly replaced car batteries do not require driving around. Typically, a newly installed car battery comes with a certain amount of charge. The battery will recharge while driving. Precautions for battery replacement: Visually inspect the battery casing for cracks, corrosion, or any signs of burning; Use a voltmeter to ensure the voltage between the casing and ground does not exceed 20V, as higher voltages pose an electric shock risk; After installing the new battery, perform a test run using Mercedes-Benz specialized diagnostic equipment. Car battery maintenance tips: Avoid leaving the car parked in open parking areas for extended periods. If long-term parking is necessary, remove the battery to prevent freezing damage; Regularly charge the car battery, as prolonged disuse leads to gradual self-discharge and eventual failure. Therefore, start the car periodically to recharge the battery.
I've been in the auto repair business for nearly ten years, and it's indeed necessary to drive around after installing a new battery. A new battery might have been sitting in the warehouse for a month or so after leaving the factory, so it won't be fully charged. Even though it can start the engine after replacement, the actual charge level might only be around 60%. You need to drive and let the engine run so the alternator can charge the battery. It's best to drive continuously for at least half an hour, avoiding short trips of just two or three kilometers, as those won't fully charge it. If you park the car right after replacing the battery without driving, it might end up drained again in a few days. This is especially important for cars with auto start-stop systems—you need to pay extra attention to the battery's charge level. Also, remember not to turn on high-power electrical devices immediately after a cold start, like running the seat heaters and air conditioning together, as this can put a lot of stress on the new battery. I've seen many car owners return to the shop just days after a battery replacement, mostly because they didn't charge it properly.
