
The parking monitoring function of the dash cam does not consume much power. Here is relevant information about dash cams: 1. Functions: To protect drivers' legal rights. In case of collisions with pedestrians crossing the road or cyclists/motorcyclists, drivers may face extortion attempts. A dash cam can provide valid evidence for the driver. By replaying the recorded footage, accident liability becomes clear, allowing traffic police to handle incidents quickly and accurately. This enables rapid scene clearance to restore traffic flow while preserving crucial evidence, thus creating a safer and smoother traffic environment. 2. Components: Different dash cam products have varying appearances, but their basic components include: Main unit - containing microprocessor, data storage, real-time clock, display, lens module, operation keys, printer, data communication interface, etc. If the main unit doesn't include a display or printer, it should have corresponding data display and print output interfaces. Other components include speed sensors and data analysis software.

I used to worry about my dash cam draining the car battery when parked overnight, especially since I often leave my car on the street. Some parking surveillance models do consume significant power, particularly those plugged directly into the cigarette lighter. If time-lapse recording isn't enabled, they'll run all night. A day or two might be fine, but prolonged use can easily drain the battery - once after a week-long business trip, my car wouldn't start. Now I only use models with low-voltage protection that automatically cut off power below 11.6V, which is both safer and more convenient. For complete power savings though, it's best to either unplug the power cord or get a model that supports remote shutdown via mobile app.

I've used three or four dash cams and found that whether they drain the battery when parked depends on the wiring method. The one I currently use is connected to the fuse box with a built-in voltage reduction module that monitors the battery voltage. It automatically shuts off when the battery drops to a safe level, consuming less than 1% of the battery capacity per day, which hardly affects vehicle usage. However, those older models that only plug into the cigarette lighter are problematic - they can drain about 5% of the battery per hour when recording while parked, especially in winter when the battery is more prone to depletion. My current dash cam features time-lapse recording, capturing only one frame per second, which reduces power consumption by 8 times compared to continuous monitoring mode. It's practical and doesn't harm the battery.

I'm quite concerned about the battery drain from parking mode recording, since replacing a battery costs around 700-800 yuan. A regular dash cam consumes approximately 0.3 amps per hour in parking mode. For a 60Ah battery, leaving it for more than two days might prevent the car from starting. I once tried not starting the car for three consecutive days and had difficulty turning over the engine. Later, I installed a dedicated wiring harness with voltage detection that automatically cuts power when the battery voltage drops below 12 volts. Now using time-lapse recording, I can leave the car untouched for three weeks without issues. I recommend avoiding long-term use of parking surveillance, especially for older vehicle models.


