Status:
| Parameter | Value |
|---|---|
| Vehicle | Volvo P2 |
| Raspberry Pi | Raspberry Pi 5 |
| Power Supply | DC/DC Converter |
| Vehicle Battery | 7 years old |
| Test Scenario | Ignition ON for ~5 minutes before engine start |
During testing, the Raspberry Pi unexpectedly lost power while the engine was being started.
After leaving the ignition ON for approximately five minutes, the aging 12 V battery experienced a significant voltage drop during engine cranking.
The input voltage fell below the minimum operating voltage of the DC/DC converter, causing its undervoltage protection to disconnect the output. As a result, the Raspberry Pi lost power without completing a graceful shutdown.
- Unexpected Raspberry Pi power loss
- Unclean operating system shutdown
- Possible filesystem corruption after repeated occurrences
Use a healthy vehicle battery capable of maintaining sufficient voltage during engine cranking.
If the battery is old or has reduced capacity, consider replacing it before installing this retrofit.
Note
This observation is related to the condition of the vehicle's electrical system and is not considered a hardware or software issue with this project.