diff --git a/connector/battery_my-1220-03.yaml b/connector/battery_my-1220-03.yaml
index b4c48e2..be0a19f 100644
--- a/connector/battery_my-1220-03.yaml
+++ b/connector/battery_my-1220-03.yaml
@@ -32,5 +32,5 @@ housing:
   padPosition: -7.55, 0, 7.55, 0 # 19.0/2 - 3.9/2
 
   numbers1: 3
-  padDiameter1: 5.0 # min. on battery is 4.0
+  padDiameter1: 9.0 # min. on battery is 4.0
   padPosition1: 0, 0