Video summary

BATTERY 12V MORTA | ATTENZIONE alla SPIA ROSSA! [Episodio 6]

Main summary

Key takeaways

Product Review

Product reviewed (implied)

A 12V battery system / charging behavior on a vehicle (likely an EV with an auxiliary 12V battery), tested using:

  • A Schumacher charger connected via a charging connector (noted as the source of the observed “red light” condition)
  • A domestic/high-voltage home charger (used to demonstrate recovery of the 12V battery)

The video is less a traditional “product review” of the Schumacher charger itself, and more an investigation into how a specific charging/warning situation affects the car’s 12V battery and charging management.

Key findings / features mentioned

  • Critical warning behavior: When the car shows a solid red warning light (described as tied to the charging connector / status), the 12V battery can discharge rapidly.
  • Rapid discharge rate observed: A 12V battery at ~95% dropped to ~46–50% within ~3 hours, and could reach “flat” again within another couple of hours if the condition persisted.
  • Why it matters (user impact): If left in that state, the car can end up with a flat 12V battery, even if high-voltage charging is not behaving as expected.
  • State detail noticed: Even with the car “off,” the selector/gear lever LEDs remained lit (suggesting some system stayed active).
  • Audible clue: A constant “hissing” sound was heard in a state where the car was not charging—treated as an additional indicator something abnormal was happening.
  • Recovery test/proof:
    • After unplugging/replugging and then charging via the domestic/home high-voltage charger, the 12V battery recovers quickly, without needing immediate Schumacher 12V charging.
    • Example proof: After about ~30 minutes of home charging, the infotainment showed the battery level rising (to 99%). The Schumacher then indicated the 12V recovered to ~95%.
    • Verified again later (noted as repeat after ~48 hours / another day): same result, suggesting it wasn’t coincidence.

Pros

  • Practical workaround works: If the red-light/abnormal state occurs, the video recommends unplug/replug the charging connector and restart charging using the domestic charger, which can restore the 12V quickly.
  • Visible indicators exist: The problem can be detected via specific lights and behaviors (solid red light + selector LEDs staying on + possibly hissing sound), rather than being purely hidden.

Cons / risks

  • Fast failure mode: The red-light condition can drain the 12V battery in a few hours, potentially stranding the user.
  • Charging management can fail: The video suggests there are “circumstances” where charging doesn’t start/doesn’t complete properly, and that this correlates with the 12V discharge issue.
  • Unclear root cause: The narrator states it’s not clear why the red-light/connector state impacts the 12V battery, but suspects something like a system remaining operational or a connector/socket/handshake problem.

Comparisons made

No direct product-to-product comparison is made; instead, the video contrasts scenarios:

  • Bad scenario: solid red connector/warning state → 12V drains rapidly
  • Good scenario: use home/domestic charger after addressing the connector state → 12V recovers quickly

User experience notes

  • The issue is treated as time-sensitive: the narrator emphasizes that within ~2 hours a flat 12V can happen.
  • The narrator advises monitoring:
    • 12V battery warning lights
    • whether high-voltage charging is actually progressing (e.g., appropriate flashing/green charge indicators)
    • battery % rising (including potentially via the app)

Unique points mentioned (consolidated)

  1. Solid red light associated with the charging connector corresponds to failed charging behavior.
  2. In that state, the 12V battery discharges rapidly (95% → ~46% in ~3 hours).
  3. The car does not fully power down normally; selector/gear lever LEDs remain on for hours.
  4. A recurring hissing sound was heard when the car was not truly charging.
  5. Keeping the charging cable connected after normal completion was not a cause of 12V discharge (per earlier week findings).
  6. Recommended response: unplug and reconnect to clear the red-light condition, then restart charging.
  7. Home/domestic high-voltage charging can restore the 12V quickly (proof after ~30 minutes; later confirmed again).
  8. If charging management doesn’t start/finish properly, 12V problems can occur even if the car otherwise appears off/stable.
  9. The narrator suspects possible connector/socket issues and plans further testing with another charger to isolate the root cause.

Speakers / contributors

  • Single main speaker/narrator drives the investigation (no other distinct contributors referenced in subtitles).

Concise verdict / recommendation

If you ever see the solid red charging/connector warning (and/or selector LEDs remain lit while the car isn’t truly charging), treat it as an urgent 12V risk.

The video suggests the best mitigation is to unplug/replug the connector and restart via the domestic/high-voltage charger, which can recover the 12V within ~30 minutes.

Overall lesson: monitor charging status carefully, because the 12V can drain within a few hours under that specific abnormal condition.

Original video