Table of Contents

Firmware Release Notes

The latest updates are listed first.

Enua Charge firmware updates install automatically over the air — you don't need to do anything. You can see the version currently installed on your charger in the Enua app.

For integrators: items relevant to OCPP and backend integrations are called out inline, with the relevant OCPP terms in parentheses.

3.7 series — May–June 2026

Device: Enua Charge · Builds: 3.7.1–3.7.3

Added

  • AutoCharge is now available. The vehicle can be authenticated using MAC address reported via ISO15118.

Fixed

  • OCPP SetVariables responses no longer carry internal message header meant only for the Enua's server, so the backend (CSMS) receives a clean response.
  • Fixed a bug where OCPP-managed chargers did not lock the Wallmount lock automatically before a session starts.

3.6 series — April–May 2026

Device: Enua Charge · Builds: 3.6.1–3.6.9

Fixed

  • The charger no longer becomes unresponsive if the Type 2 connector lock is faulty — it now limits retry attempts instead of blocking indefinitely.
  • Charging no longer briefly resumes after a session has been stopped or the charger has been de-authorized.
  • More reliable NFC reads: fixed cases where only part of a tag was registered, and improved reading of EMV (bank) cards.
  • More stable detection of the vehicle's charging state, preventing rapid switching between states.
  • Improved cellular (LTE) reliability: a larger message buffer, plus a fix for messages occasionally being split and corrupted in transit.
  • Fixes for OCPP Smart Charging Profiles.
  • Transaction events sent immediately after the charger boots now carry the correct time. The charger first syncs its clock from the boot response (OCPP BootNotification), avoiding incorrect 1970 timestamps.
  • The charger now reports its full configuration (OCPP BaseReport) while still in the pending-boot state.
  • OCPP GetCompositeSchedule improvements: returns a valid schedule (factory-default 6 A) even when none is set, now includes external constraints so the charger and backend agree on the active limit, and reports SuspendedEVSE rather than SuspendedEV when charging is limited to 0 A.

3.5 series — December 2025–March 2026

Device: Enua Charge · Builds: 3.5.0–3.5.6

Added

  • OCPP Smart Charging Profiles. The charger can now follow charging schedules and power limits sent by a backend/operator (OCPP charging profiles).
  • Support for IT three-phase grids.

Fixed

  • More reliable charging on rotated phases — corrects power output and prevents the charger from getting stuck when a vehicle's charging state isn't detected.
  • More stable detection of ground-fault events, preventing false tripping.
  • The Type 2 connector stays locked more reliably when "keep locked" is enabled.
  • The charger no longer restarts after sitting in an error state for an hour, and reports its network health more accurately.

3.4 series — September–October 2025

Device: Enua Charge · Builds: 3.4.0–3.4.1

Changed

  • Over-temperature protection now confirms a sustained high temperature (for at least a minute) before pausing charging, reducing false errors.

Fixed

  • Wallmount calibration improvements.
  • More accurate ambient-temperature logging.

3.3 series — April–September 2025

Device: Enua Charge · Builds: 3.3.0–3.3.20

This series introduced three-phase support along for IT networks with a broad set of charging, connectivity, and user-experience improvements.

Added

  • Support for three-phase IT installations, including neutral-phase measurement.
  • Resilient offline charging sessions. If the charger is offline, it retries uploading completed session records and preserves the essential start/stop data so a session is not lost (OCPP transactions).
  • New status-light patterns.
  • Charger uptime and network information are now reported to the backend (OCPP status/boot messages).

Changed

  • Faster NFC tag reading for quicker session start.
  • LED brightness changes made in the Enua app now apply instantly.
  • The charger can charge at a reduced 6 A while waiting in the load-balancing queue, instead of standing idle.

Fixed

  • Numerous charging state-transition fixes for more reliable session start and stop, including eco mode and OCPP charging behaving correctly across hardware variants (and showing the correct status-light colours).
  • More reliable firmware updates, with correct confirmation of the installed image.
  • Improved RCD (residual-current) self-test reliability and over-current handling on three-phase installations.
  • More robust vehicle-connection detection (debounced readings) and diagnostic-log fixes.