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EV Charger Error

Backend Connection Lost

Updated March 2026

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This is general guidance based on the ChargeX MREC standard. Actual charger behavior varies by manufacturer and firmware version. Always follow on-screen instructions and contact the charging network if you are unsure.

Warning

The charger cannot reach the charging network's servers. This prevents authorization, billing, and remote management. The charger hardware itself may be fine.

What to do

  1. Try an RFID card. Chargers with offline RFID support may still work
  2. Wait a few minutes and retry
  3. Try a different charger or a different network
  4. Report the issue to the charging network

Who's responsible?

  • The charging network operator needs to fix this

Technical details

Error code
BackendConnectionLost
Category
Communication
Classification
authorization, maintenance
Source
ChargeX MREC Standard (2023)

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