diff --git a/apiscraper.py b/apiscraper.py
index a913cd5..1e50bd2 100644
--- a/apiscraper.py
+++ b/apiscraper.py
@@ -41,7 +41,7 @@
 a_validity_checks = {
     "charger_voltage":
         {
-            "eval": "new_value < 10",
+            "eval": "new_value < 0",
             "set": 0
         }
 }