Indevolt battery control

[biodiv]

Add battery control for indevolt devices.
Based on this discussion.
Suggested removal of minsoc/maxsoc implemented.

Re-opened because @ulrichreisinger offered to test on real hardware.

Suggested test:

• download the updated template indevolt-battery.yaml and rename it
• evcc --template-type battery --template renamed-indevolt-battery.yaml
• set maxchargepower according to the indevolt device (e.g. 3000 for the indevolt 3000AC)

PS: Closed PR did not update automatically #30957, so I created a new one

[sourcery-ai]

Hey - I've left some high level feedback:

• The new batterymode HTTP calls embed raw JSON in the query string without urlEncode, unlike the existing meter requests; consider using urlEncode for these config parameters to avoid issues with special characters.
• The template still references .minsoc and .maxsoc in the batterymode sequence despite the description mentioning their removal; please check whether these parameters are still intended and update the template or description accordingly.
• The help text for maxchargepower states a valid range of 50–3000 W, while the inline comment references an API validity range of 50–2400 W; aligning these ranges would prevent configuration confusion.

Prompt for AI Agents

Please address the comments from this code review:

## Overall Comments
- The new batterymode HTTP calls embed raw JSON in the query string without urlEncode, unlike the existing meter requests; consider using urlEncode for these config parameters to avoid issues with special characters.
- The template still references .minsoc and .maxsoc in the batterymode sequence despite the description mentioning their removal; please check whether these parameters are still intended and update the template or description accordingly.
- The help text for maxchargepower states a valid range of 50–3000 W, while the inline comment references an API validity range of 50–2400 W; aligning these ranges would prevent configuration confusion.

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[ulrichreisinger]

Add battery control for indevolt devices. Based on this discussion. Suggested removal of minsoc/maxsoc implemented.

Re-opened because @ulrichreisinger offered to test on real hardware.

Suggested test:

• download the updated template indevolt-battery.yaml and rename it
• evcc --template-type battery --template renamed-indevolt-battery.yaml
• set maxchargepower according to the indevolt device (e.g. 3000 for the indevolt 3000AC)

PS: Closed PR did not update automatically #30957, so I created a new one

I have copied indevolt-battery.yaml into my Docker volume (/root/.evcc), but I'm running evcc in Docker on Synology/Portainer. How should the custom template be loaded? Should I change the container command or is there another recommended way?

[ulrichreisinger]

Nightly tested

● Indevolt is recognized as “controllable: Yes”.

● BYD reaches 100%.

● 3–3.5 kW PV surplus are fed in.

● Indevolt remains on standby (79% SoC).

● No commands appear in the debug log to switch to “Charge”. Only battery 2 soc and battery 2 power are read.

[andig]

That may be a misunderstanding. Charge means force-charging. Battery is still assumed to charge on its own during surplus in "normal" mode.