diff --git a/README.md b/README.md
index fdb81e8..0c16d0a 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,9 @@
 # myStrom's WiFi Button Plus ESPHome configuration yaml
 
+## Disclaimer
+
+**Work In progress !!! Battery charge was not tested yet.**
+
 ## Flash
 
 ```