Use table if no shunt is installed

Author: minou65

readme.md

@@ -15,7 +15,8 @@
 		- [Battery voltage](#battery-voltage)
 		- [Shunt current](#shunt-current)
 		- [Avg consumption](#avg-consumption)
-		- [Time to go](#time-to-go)
+		- [State of charge (Soc)](#state-of-charge-soc)
+		- [Time to go (Ttg)](#time-to-go-ttg)
 		- [Battery full](#battery-full)
 		- [Temperature](#temperature)
 	- [Configuration](#configuration)
@@ -117,7 +118,14 @@ Current in amperes flowing through the shunt. If the current is negative, the ba
 ### Avg consumption
 The average current consumption in the last 60 seconds.
 
-### Time to go
+### State of charge (Soc)
+Shows the charge level of the battery. This is calculated based on the capacity and the Ah consumed and is an estimate based on the current consumption.
+
+If no shunt is used and the current calibration factor is set to 0, the following table is used to calculate the Soc
+
+![alt text](img/Ladezustand_60be.jpg)
+
+### Time to go (Ttg)
 If the time is 00:00, then the battery is charging. Otherwise, it will display an estimate in hours and minutes of how long, based on the current consumption, it will take until the battery is empty.
 
 ### Battery full
@@ -159,8 +167,13 @@ Assuming a voltage of 75 mV at nominal current, the resulting resistance in ohms
 maximum current that may flow through the shut
 
 #### Voltage calibration factor
+Use a multimeter to measure the voltage on the battery. The measured voltage divided by the voltage displayed by the battery monitor gives the factor that you enter here.
 
 #### Current calibration factor
+Use a multimeter to measure the current at the shunt. The measured current divided by the current displayed by the battery monitor gives the factor that you enter here.
+
+If you do not want to use a shunt, enter 0 here. See also [State of charge (Soc)](#state-of-charge-soc)
+
 
 ### Battery
 #### Type

src/StatusHandling.cpp

@@ -37,7 +37,35 @@ void BatteryStatus::setParameters(uint16_t capacityAh, uint16_t chargeEfficiency
 }
 
 void BatteryStatus::updateSOC() {
-    stats.socVal = stats.remainAs / batteryCapacity;
+    if (gCurrentCalibrationFactor != 0) {
+        stats.socVal = stats.remainAs / batteryCapacity;;
+    }
+    else {
+        if (lastVoltage > 12.6) {
+            stats.socVal = 1.0;
+        } else if(lastVoltage > 12.5){
+			stats.socVal = 0.9;
+		} else if(lastVoltage > 12.42) {
+			stats.socVal = 0.8;
+		} else if(lastVoltage > 12.33) {
+			stats.socVal = 0.7;
+		} else if(lastVoltage > 12.2) {
+			stats.socVal = 0.6;
+		} else if(lastVoltage > 12.06) {
+			stats.socVal = 0.5;
+		} else if(lastVoltage > 11.9) {
+			stats.socVal = 0.4;
+		} else if(lastVoltage > 11.75) {
+			stats.socVal = 0.3;
+		} else if(lastVoltage > 11.58) {
+			stats.socVal = 0.2;
+		} else if(lastVoltage > 11.31) {
+			stats.socVal = 0.1;
+        }
+        else {
+            stats.socVal = 0.0;
+        }
+    }
 
     //Serial.println("BatteryStatus::updateSOC");
     //Serial.printf("    socVal: %.3f\n", stats.socVal);
@@ -59,7 +87,7 @@ void BatteryStatus::updateTtG() {
     if (_avgCurrent > 0.0) {
         stats.tTgVal = static_cast<int>(max(stats.remainAs - minAs, 0.0f) / _avgCurrent);
     }  else {
-        stats.tTgVal = INFINITY;
+        stats.tTgVal = 0;
         //Serial.println("BatteryStatus::updateTtG: Infinity");
     }
 

src/version.h

@@ -1,8 +1,8 @@
 #define VERSION_MAJOR 1
-#define VERSION_MINOR 1
+#define VERSION_MINOR 2
 #define VERSION_PATCH 0
-#define VERSION_BUILD 53
-#define VERSION_DATE "2024-06-02"
-#define VERSION_TIME "13:14:31"
-#define VERSION "1.1.0.53"
-#define VERSION_STR "1.1.0.53 (2024-06-02 13:14:31)"
+#define VERSION_BUILD 57
+#define VERSION_DATE "2024-06-08"
+#define VERSION_TIME "15:50:59"
+#define VERSION "1.2.0.57"
+#define VERSION_STR "1.2.0.57 (2024-06-08 15:50:59)"