充电电压如果小于3V，就直接设置为0

app/src/main/cpp/PhoneDevice.cpp

@@ -1019,7 +1019,14 @@ bool CPhoneDevice::QuerySystemProperties(std::map<std::string, std::string>& pro
                 {
                     continue;
                 }
+                if (val < 3000)
+                {
+                    strcpy(str, "0");
+                }
+                else
+                {
                     snprintf(str, sizeof(str), "%.1f", (val / 1000.0));
+                }
                 it->second = std::string(str);
                 break;
             }