How to Choose Non Power Off Dash Cam--Analysis of OBD Power Supply and Other Solutions

ACC Safe Power Supply

For users seeking higher stability, the ACC safe power supply option is available. Typically used in car modifications, it can also provide constant power. The ACC safe is usually located on the side of the steering wheel or central control panel and requires removing decorative panels to access. Its power cable also has voltage recognition and will automatically disconnect when the voltage is too low. However, for ordinary car owners, the OBD power supply method is more convenient and practical.

Advantages of OBD-Powered Dash Cams:

• Simple Installation: No complex wiring or professional installation is required. Just plug  dash cam’s OBD interface into the vehicle’s OBD port, reducing the risk of damaging vehicle wiring.
• Functional Features:
  • Real-Time Driving Data Monitoring: Captures information such as speed, RPM, fuel consumption, and engine oil temperature to help drivers understand the vehicle’s operating status.
  • Vehicle Fault Diagnosis: Reads and parses vehicle fault codes, providing specific fault information and solutions to help detect and address potential issues promptly.
  • Driving Behavior Analysis: Analyzes aggressive driving behaviors (e.g., hard acceleration, sudden braking, speeding), provides ratings, and offers suggestions to improve driving habits and safety.
  • Vehicle Positioning and Navigation: Records parking locations and provides map navigation to help drivers find their vehicles easily.
• Stable Power Supply: Draws power directly from the vehicle’s OBD port, ensuring stable voltage that is unaffected by starting or stopping the car, thus guaranteeing continuous operation of  dash cam.
• High Data Accuracy: Vehicle data obtained via the OBD port is accurate and reliable, providing precise driving information and vehicle status feedback.
• Comprehensive Monitoring Protection: Continuously records the exterior or interior of the vehicle after shutdown. If incidents such as scratches, collisions, or theft occur while the vehicle is parked in a parking lot or on the street, the recorder can document the process, providing strong evidence for the owner to identify the responsible party or assist the police in solving cases.

Key Consideration for Any Mode:
A dash cam with low-voltage protection is essential to prevent excessive battery discharge and damage.

Power Consumption in Continuous Parking Monitoring Mode

Power consumption varies depending on the working mode and device performance:

Event-Triggered Mode (Vibration Sensing or Motion Detection):

• •  dash cam remains in standby mode and only starts recording when it detects vehicle vibrations (e.g., collisions, scratches) or motion in front of the vehicle.
  • Advantage: Low power consumption as it mostly stays dormant, only activating briefly during events. This minimizes battery drain and saves storage space by focusing on critical footage.
  • Disadvantage: May miss minor incidents or distant anomalies if the sensor fails to trigger.

Time-Lapse Recording Mode:

• • After the vehicle is turned off,  dash cam records at a lower frame rate (e.g., one frame per second) and plays back in fast-forward.
  • Advantage: Continuous recording ensures no time period) is missed, providing a complete overview of the parking period. It saves more power and storage than full-time recording.
  • Disadvantage: Reduced frame rates may slightly degrade video quality, and frequent memory card read/write operations can affect its lifespan.

Battery Protection Mode:

• •  dash cam automatically turns off after a set period to protect the vehicle’s battery. Power consumption depends on working duration and frequency.

General Guidance:

• For long-term parking in complex environments (high risk of collisions or vandalism), event-triggered mode is ideal as it balances power savings and critical event recording.
• For users who need complete coverage of the parking period and can accept slightly lower video quality and memory card wear, time-lapse recording mode is suitable.
• Regardless of the mode, prioritize dash cams with low-voltage protection to avoid battery damage.

Conclusion:
OBD-powered dash cams offer a reliable continuous-power solution, suitable for daily use and avoiding the complexity of car modifications. With this choice, you can eliminate concerns about power loss when the vehicle is turned off, providing peace of mind for long-term parking security.