What are the reasons for the battery drain in Haval Big Dog?
2 Answers
Haval Big Dog battery drain reasons are: 1. The car has been parked for a long time; 2. The battery has reached its service life; 3. Engine damage; 4. Insufficient battery electrolyte or leakage; 5. Fuse burnout; 6. Battery terminal corrosion. Methods for car battery maintenance are: 1. Avoid parking the car in an open parking lot for a long time; 2. Avoid multiple uninterrupted starts; 3. Regularly check the battery accessories and connecting circuits; 4. Prohibit the use of car electrical appliances after the car is turned off. Taking the Haval Big Dog 2021 2.0TDCT two-wheel-drive Chinese Hunting Dog Edition as an example, its length, width, and height are 4620 mm, 1890 mm, and 1780 mm respectively, the wheelbase is 2738 mm, and the body structure is a 5-door 5-seat SUV.
I've been driving my Haval Big Dog for almost two years and have encountered battery drain issues several times. After summarizing, there are mainly three reasons: first, the generator has problems and can't charge properly, especially after long-distance driving when the battery isn't sufficiently replenished. Plus, the car itself comes with many electronic devices like navigation and audio systems, which drain power quickly; second, the battery ages too fast—the original battery usually lasts about three to five years before failing, with reduced capacity, making it prone to drain in cold weather when starting; third, carelessness like forgetting to turn off the lights or radio, which can completely drain the battery overnight. Last month, I faced this exact situation and had to tow it to the shop for inspection. They advised regularly checking the charging system, periodically testing the battery voltage, and avoiding additional electrical devices like aftermarket dash cams to save both hassle and money.
