diff --git a/app/src/main/cpp/PhoneDevice.cpp b/app/src/main/cpp/PhoneDevice.cpp
index 3ccfcca9..292e697d 100644
--- a/app/src/main/cpp/PhoneDevice.cpp
+++ b/app/src/main/cpp/PhoneDevice.cpp
@@ -355,7 +355,7 @@ bool CPhoneDevice::QuerySystemProperties(std::map<std::string, std::string>& pro
         {
             double val = GpioControl::getChargingVoltage() / 200.0; // ChargeVol  *5/1000
             char str[32] = { 0 };
-            snprintf(str, sizeof(str), "%.0f", val);
+            snprintf(str, sizeof(str), "%.1f", val);
             it->second = str;
         }
         else if (it->first == (PROP_CHARGING_CURRENT))
@@ -374,7 +374,7 @@ bool CPhoneDevice::QuerySystemProperties(std::map<std::string, std::string>& pro
         {
             double val = GpioControl::getBatteryVoltage() * 3.0 / 1000.0;  // // BatVol
             char str[32] = { 0 };
-            snprintf(str, sizeof(str), "%.0f", val);
+            snprintf(str, sizeof(str), "%.1f", val);
             it->second = str;
         }
         else if (it->first == (PROP_BATTERY_CURRENT))