How to Maintain the Battery?

[McHeidi]

Methods for maintaining the battery include: 1. Regularly clean the dust and oil stains from the car battery terminals and apply specialized grease to protect the wiring harness; 2. Periodically inspect the battery accessories and connecting circuits; 3. After turning off the car, minimize the use of electrical equipment inside the vehicle; 4. Check the car battery through the observation hole on the battery and replace it regularly; 5. If the vehicle is not used for an extended period, start the car periodically. The functions of the battery are: 1. To provide the starting current to the starter when starting the engine; 2. To assist the generator in supplying power to electrical equipment when the generator is overloaded; 3. To supply power to electrical equipment when the engine is idling; 4. To protect the electrical appliances used in the car.

[DelTanner]

After driving for so many years, I believe the key to battery maintenance lies in preventing power loss and keeping it clean. Always remember to turn off the lights and air conditioning after using the car, especially the radio and dash cam—these are the 'big power thieves.' I always keep a jump starter in my car; when I return from a two-week business trip, jump-starting the car is much more convenient than waiting for roadside assistance. When washing the car, take a moment to wipe the battery terminals. If there's white powder, rinse it off with hot water, dry it, and apply some grease to prevent oxidation. Regularly visit a repair shop to have them test the battery's health with professional equipment—don't skimp on this small expense, as running out of power midway is a huge hassle. I've also seen many people drain their batteries by listening to music while parked—I strongly advise against it.

[VanTeagan]

We girls tend to care more about hassle-free maintenance. Here's a tip: don't hesitate when starting the car - turn the key decisively, as repeated clicking can easily drain the battery. I learned this the hard way - when driving my kid to extracurricular classes, I often made just 10-minute trips, only to realize later that short distances don't provide enough charging. Now I deliberately take at least 20-minute drives weekly. When I bought my new car, the salesperson told me the auto start-stop feature actually wears out the battery, so I only activate it at red lights longer than 40 seconds. Oh, and always unplug your phone charger - I once forgot for two days and nearly couldn't start the car. Now I use a 20-yuan voltage monitor from Taobao plugged into the cigarette lighter - it alerts me when voltage drops below 12V, super convenient.

[CadenLee]

From the perspective of the electrical system, the core of battery maintenance is 'charge and discharge balance.' Aging circuits in older cars may leak electricity, so it's recommended to install a power cut-off switch with a current display and disconnect the negative terminal if the car is parked for more than three days. Be cautious when adding equipment—I've seen car refrigerators directly connected to the battery. If modifying wiring, always add an independent fuse and don't skimp on wire gauge. For those who frequently drive on highways, note that excessively high alternator voltage can overcharge and damage the battery. Use a multimeter to check the voltage at idle; if it exceeds 14.5V, adjust the regulator. Batteries that have been deeply discharged should undergo a deep charge-discharge cycle to reactivate them, but avoid doing this more than three times. The round inspection window on the battery is actually very practical—if it turns from green to black, it's time for a replacement.