Voltie Charger

← Chargers

This page shows the nightly version. Switch to the release version.

Modbus must be set to "TCP" on the Modbus config screen of the Voltie app, and the slave address configured there (default 11) must match the ID. The communication timeout reduces the charging current to 0 A after a loss of communication, so it has to be set to 0 (disabled) or to a value larger than the evcc update interval. Requires EVSE firmware 350 or later and charger software 1.3.40 or later. Phase switching, the total energy counter, the phase powers and the current limits require EVSE firmware 352 or later.

Supported features

• mA regulation: Finer charging current regulation (mA instead of A) for better solar surplus use.
• 1P/3P: Automatic phase switching. Useful for solar surplus charging.
• Built-in meter: Support for an integrated meter.
• Dimmable: Power consumption can be reduced (e.g. § 14a EnWG). See External Limit.

💚 Sponsor token required

This device is available to sponsors of the project. Read more about our sponsorship model.

🐜 Known limitations

The charger's auto start mode is disabled persistently when evcc starts and has to be switched back on in the Voltie app after evcc is removed.

The Modbus TCP gateway forwards at most two transactions per second. Shorter polling intervals produce timeouts rather than fresher data.

Phase switching is only available on chargers manufactured from 2026 (serial number starting with 1026). On older hardware the charger rejects the switch.

Parameters

Name	Description	Value	Level
id	Modbus ID Default: 1	int	required
host	IP address or hostname Example: 192.0.2.2		required
port	Port Default: 502	int	required
cache	Cache Time interval for data refresh Default: 1s Example: 5m		advanced

Configuration example for evcc.yaml

If you don't want to configure via the UI, you can alternatively use this YAML block.

chargers:
    - name: my_charger
      type: template
      template: voltie

      # Modbus TCP
      modbus: tcpip
      id: 11
      host:  # Hostname
      port: 502 # Port
      cache: 1s # Cache, Time interval for data refresh (optional)