Marstek Venus E Gen 3.0

Supported features

Battery control: External control of home battery charging and discharging via evcc.

Usage areas

Battery

Parameters

Modbus

Name	Description	Value	Level
`id`	Modbus ID Default: `1`	int	required
`device`	Device name USB-RS485 adapter Example: `/dev/ttyUSB0`		required
`baudrate`	Baudrate Default: `9600`		required
`comset`	ComSet Communication parameter for the adapter Default: `8N1`		required
`host`	IP address or hostname Example: `192.0.2.2`		required
`port`	Port Default: `502`	int	required
`generation`	Generation Venus E, Venus E Gen 2.0 and Venus C are generation 2. Generation 3 uses different registers.		optional
`capacity` [kWh]	Battery capacity Default: `5.12` Example: `50`		optional
`minsoc` [%]	Minimum charge Lower limit as configured on the battery system. Used by optimizer. Default: `11` Example: `25`		optional
`maxsoc` [%]	Maximum charge Upper limit as configured on the battery system. Used by optimizer and, on some devices, for grid charging. Default: `100` Example: `95`		optional
`maxchargepower` [W]	Maximum charge power Highest power the battery system can charge with. The optimizer plans with charging up to this power. Some devices also use it as grid charging power. Default: `2500`		advanced
`maxdischargepower` [W]	Maximum discharge power Highest power the battery system can discharge with. The optimizer plans with discharging up to this power. Smart mode assumes the battery supplies at most this power to vehicle charging. Default: `800`		advanced
`work_mode_normal`	Work mode for Normal state 0=manual, 1=anti-feed, 2=trade mode. Default: `1`		advanced

Configuration example for evcc.yaml

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

meters:
    - name: my_battery
      type: template
      template: marstek-venus-e
      usage: battery

      # RS485 via adapter (Modbus RTU)
      modbus: rs485serial
      id: 1
      device: /dev/ttyUSB0 # USB-RS485 Adapter Adresse
      baudrate: 115200 # Prüfe die Geräteeinstellungen, typische Werte sind 9600, 19200, 38400, 57600, 115200
      comset: "8N1" # Kommunikationsparameter für den Adapter

      # RS485 via TCP/IP (Modbus RTU)
      modbus: rs485tcpip
      id: 1
      host:  # Hostname
      port: 502 # Port

      # Modbus TCP
      modbus: tcpip
      id: 1
      host:  # Hostname
      port: 502 # Port
      generation: # Generation, Venus E, Venus E Gen 2.0 and Venus C are generation 2. Generation 3 uses different registers. [2, 3]
      capacity: 5.12 # Battery capacity (kWh), optional
      minsoc: 11 # Minimum charge (%), Lower limit as configured on the battery system. Used by optimizer. (optional)
      maxsoc: 100 # Maximum charge (%), Upper limit as configured on the battery system. Used by optimizer and, on some devices, for grid charging. (optional)
      maxchargepower: 2500 # Maximum charge power (W), Highest power the battery system can charge with. The optimizer plans with charging up to this power. Some devices also use it as grid charging power. (optional)
      maxdischargepower: 800 # Maximum discharge power (W), Highest power the battery system can discharge with. The optimizer plans with discharging up to this power. Smart mode assumes the battery supplies at most this power to vehicle charging. (optional)
      work_mode_normal: 1 # Work mode for Normal state, 0=manual, 1=anti-feed, 2=trade mode. (optional)