Yes, many dashcams can work when the car is off, but it requires a specific setup. The key factor is how the dashcam receives power. Unlike when the engine is running, the car's accessory power outlets (cigarette lighter sockets) typically turn off with the ignition. To enable 24/7 recording, you need a dashcam with a parking mode feature and one of two primary power sources: a hardwiring kit connected directly to your car's fuse box or an external dashcam battery pack.
Parking mode is an essential feature. When the car is parked and turned off, the dashcam enters a low-power state, monitoring its surroundings with motion detection, impact (G-sensor) detection, or a combination of both. Instead of recording continuously, it saves a short video clip (e.g., 15-30 seconds) when an event is triggered, preserving storage space and preventing excessive battery drain on your car's battery.
The choice of power source is critical. Here’s a comparison of the common methods:
| Power Method | How It Works | Advantages | Potential Drawbacks |
|---|
| Hardwiring Kit | Connects to constant-power and accessory fuses in your car's fuse box. | Seamless operation; often includes a low-voltage cut-off to protect your car battery. | Requires professional installation or DIY electrical knowledge. |
| Battery Pack | A separate, rechargeable battery powers the dashcam when the car is off. | Protects your car's battery; easy to install and move between vehicles. | Adds cost; requires regular recharging; limited recording time. |
| OBD-II Port | Plugs into the On-Board Diagnostics port, which often provides constant power. | Very easy installation; may include smart power management. | Not available on all vehicles; can be an awkward cable location. |
For most users, a hardwiring kit is the most reliable long-term solution. However, if you only park for short periods or are concerned about draining your car's 12-volt battery, a dedicated battery pack is a safer, albeit more expensive, alternative. Always ensure your dashcam is specifically designed for parking mode to avoid damaging your vehicle's electrical system.
