Why does the Haval Big Dog lose power after being parked for a few days?
2 Answers
Haval Big Dog losing power after being parked for a few days is usually caused by the following common faults: 1. The internal plates of the battery fall off, causing severe self-discharge. The battery cannot be left unused for long periods, so in this case, a new battery needs to be replaced. Normally, the lifespan of a battery is generally around 2 to 3 years, and its longevity is closely related to driving conditions, road conditions, and driving habits. During daily vehicle use, it is essential to avoid using electrical equipment when the engine is not running, such as listening to the radio or watching videos. 2. The vehicle's discharge current is too high when in sleep mode. Common causes include additional electrical devices installed on the vehicle, frequently forgetting to turn off interior lights, or short circuits in the vehicle's wiring, preventing the vehicle from entering sleep mode. If the vehicle is parked for an extended period, this can lead to frequent battery depletion and failure to start the vehicle.
I'm quite familiar with the Haval Big Dog losing power after sitting idle for a few days—having driven for over a decade, I've encountered this several times. The main issue lies in battery aging; factory-installed ones typically last three to four years before struggling, draining completely after just a few days parked. With numerous electronic devices onboard—like aftermarket dashcams or GPS—poor wiring can cause parasitic drain. Additionally, the alternator needs checking; if it fails to charge properly while driving, the battery depletes quickly. For prevention, I recommend avoiding prolonged inactivity—start the engine at least once a week for a 20-minute drive to recharge. If that doesn’t help, consider replacing the battery or installing a smart maintainer. If stranded with a dead battery, use jumper cables as a temporary fix but head to a professional shop immediately for testing—don’t wait for bigger trouble.
