# SolarMax MAX.STORAGE / MAX.STORAGE Ultimate

Source: https://docs.evcc.io/en/meters/solarmax-max-storage-max-storage-ultimate

For batter control, the "Connectivity+" function must be activated via the Solarmax support. Available from software version 3.4.4. Without activation, the function remains without effect.

Supported features: battery-control

## Parameters

| Name | Description | Default / example | |
| --- | --- | --- | --- |
| modbus | Modbus Type (tcpip) |  |  |
| capacity | Battery capacity | 50 kWh |  |
| minsoc | Minimum charge Lower limit as configured on the battery system. Used by optimizer. | 0 % |  |
| maxsoc | Maximum charge Upper limit as configured on the battery system. Used by optimizer and for grid charging. | 100 % |  |
| maxacpower | Maximum AC power of the hybrid inverter | 0 W | advanced |
| maxchargepower | Maximum charge power For forced charging of the battery. |  W | advanced |
| maxdischargepower | Maximum discharge power Maximum discharge power of the storage. |  W | advanced |
| watchdog | Watchdog | 60s | advanced |

## Configuration example for evcc.yaml

```yaml
meters:
    - name: my_grid
      type: template
      template: solarmax-maxstorage
      usage: grid
      
      # Modbus TCP
      modbus: tcpip
      id: 1
      host:  # Hostname
      port: 502 # Port
      watchdog: 60s # Watchdog, optional
```

```yaml
meters:
    - name: my_pv
      type: template
      template: solarmax-maxstorage
      usage: pv
      
      # Modbus TCP
      modbus: tcpip
      id: 1
      host:  # Hostname
      port: 502 # Port
      maxacpower: 0 # Maximum AC power of the hybrid inverter (W), optional
      watchdog: 60s # Watchdog, optional
```

```yaml
meters:
    - name: my_battery
      type: template
      template: solarmax-maxstorage
      usage: battery
      
      # Modbus TCP
      modbus: tcpip
      id: 1
      host:  # Hostname
      port: 502 # Port
      capacity: 50 # Battery capacity (kWh), optional
      minsoc: 0 # 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 for grid charging. (optional)
      maxchargepower: # Maximum charge power (W), For forced charging of the battery. (optional)
      maxdischargepower: # Maximum discharge power (W), Maximum discharge power of the storage. (optional)
      watchdog: 60s # Watchdog, optional
```