diff --git a/src/WatchFeatures/Battery.cpp b/src/WatchFeatures/Battery.cpp
index c3705e8..b552d52 100644
--- a/src/WatchFeatures/Battery.cpp
+++ b/src/WatchFeatures/Battery.cpp
@@ -27,7 +27,7 @@ uint8_t WatchFeatures::Battery::GetPercentage()
 {
   float voltage = GetVoltage();
 
-  float level = (GetVoltage() - 3.6f) / 0.6f;
+  float level = (GetVoltage() - 3.65f) / 0.55f;
   if (level < 0.0f) {
     level = 0.0f;
   } else if (level > 1.0f) {