From 0d578fd7880a6bc5bc8abce55afcf05d10ee44bd Mon Sep 17 00:00:00 2001
From: andig <andi@evcc.io>
Date: Mon, 11 Aug 2025 13:08:17 +0200
Subject: [PATCH] Wattsonic: add battery control (#22907)

---
 templates/definition/meter/wattsonic.yaml | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/templates/definition/meter/wattsonic.yaml b/templates/definition/meter/wattsonic.yaml
index 7f46da1c3..c6ef310b4 100644
--- a/templates/definition/meter/wattsonic.yaml
+++ b/templates/definition/meter/wattsonic.yaml
@@ -5,6 +5,7 @@ products:
   - brand: Solinteng
   - brand: A-Tronix
   - brand: St-ems
+capabilities: ["battery-control"]
 params:
   - name: usage
     choice: ["grid", "pv", "battery"]
@@ -15,6 +16,14 @@ params:
     id: 247
   - name: capacity
     advanced: true
+  - name: minsoc
+    type: int
+    default: 20
+    advanced: true
+  - name: maxsoc
+    type: int
+    default: 95
+    advanced: true
   - name: delay
     default: 100ms
     advanced: true
@@ -108,5 +117,13 @@ render: |
       address: 43000    # SOC
       type: holding
       decode: int16
+  limitsoc:
+    source: modbus
+    {{- include "modbus" . | indent 2 }}
+    delay: {{ .delay }}
+    register:
+      address: 52503 # min soc
+      type: writeholding
+      encoding: uint16
   capacity: {{ .capacity }} # kWh
   {{- end }}