diff --git a/templates/definition/meter/sax.yaml b/templates/definition/meter/sax.yaml
index e6f994e57..978661fdb 100644
--- a/templates/definition/meter/sax.yaml
+++ b/templates/definition/meter/sax.yaml
@@ -47,4 +47,29 @@ render: |
       address: 46 # SOC vom Speicher (Messwert)
       type: holding
       decode: uint16
+  batterymode:
+    source: switch
+    switch:
+    - case: 1 # normal
+      set:
+        source: const
+        value: 4600 # W
+        set:
+          source: modbus
+          {{- include "modbus" . | indent 8 }}
+          register:
+            address: 43 # Leistungsgrenzwert für Entladung
+            type: writesingle
+            decode: uint16
+    - case: 2 # hold
+      set:
+        source: const
+        value: 0 # W
+        set:
+          source: modbus
+          {{- include "modbus" . | indent 8 }}
+          register:
+            address: 43 # Leistungsgrenzwert für Entladung
+            type: writesingle
+            decode: uint16
   {{- end }}