diff --git a/RX/Radiomaster 2400 ER8G.json b/RX/Radiomaster 2400 ER8G.json
index a6b7f48..794e857 100644
--- a/RX/Radiomaster 2400 ER8G.json	
+++ b/RX/Radiomaster 2400 ER8G.json	
@@ -30,8 +30,8 @@
     "i2c_scl": 18,
     "vbat": 39,
     "button": 0,
-    "vbat_scale": 987,
-    "vbat_offset": 3,
+    "vbat_scale": 700,
+    "vbat_offset": -30,
     "vbat_atten": 7,
     "vbat_noreading": -1,
     "vbat_cal_min": 4000,