Individual data points with multiple batteries

[olli-70]

There are 2 solar systems in my installation, each with its own battery. While there are individual and common data points for the two pv systems (sum of pv1 and pv2), only the summed values of both batteries are displayed for the batteries, but not the individual values.
Perhaps it would be possible to transmit separate data points to the home assistant for all connected batteries without too much effort?

[marq24]

since I am quite bussy with other stuff - have you check, if the api/state response return two values (for the batteries) - or is this already the sum created by the evcc backend?

[olli-70]

Yes, I’ve checked — when querying the API for the state, I do get separate information for each battery.

[marq24]

... but I 'only' see SOC, power and capacity (which is hopefully static anyhow) as individual fields - right?

    "battery": [
      {
        "power": 0,
        "capacity": 12,
        "soc": 81,
        "controllable": false
      }
    ],
    "batteryCapacity": 12,
    "batteryDischargeControl": false,
    "batteryEnergy": 0,
    "batteryGridChargeActive": false,
    "batteryMode": "unknown",
    "batteryPower": 0,
    "batterySoc": 81,

[marq24]

here you go -> https://github.com/marq24/ha-evcc/releases/tag/2025.7.2