diff --git a/Software/Software.ino b/Software/Software.ino
index 7bea8eb6..008ffea8 100644
--- a/Software/Software.ino
+++ b/Software/Software.ino
@@ -586,7 +586,7 @@ void receive_can2() {  // This function is similar to receive_can, but just take
 #endif
 #ifdef DOUBLE_BATTERY
     receive_can_battery2(rx_frame_can2);
-#endif
+#endif  //DOUBLE_BATTERY
   }
 }
 
@@ -614,7 +614,7 @@ void handle_CAN_contactors() {
               (uint8_t)(abs(datalayer.battery.status.voltage_dV - datalayer.battery2.status.voltage_dV) / 10));
   }
 }
-#endif
+#endif  //DOUBLE_BATTERY
 
 #ifdef CONTACTOR_CONTROL
 void handle_contactors() {
@@ -739,7 +739,7 @@ void update_SOC() {
 #ifdef DOUBLE_BATTERY
     datalayer.battery.status.reported_soc =
         (datalayer.battery.status.real_soc + datalayer.battery2.status.real_soc) / 2;
-#endif
+#endif  //DOUBLE_BATTERY
   }
 #ifdef DOUBLE_BATTERY
   datalayer.battery.status.reported_soc = (datalayer.battery.status.real_soc + datalayer.battery2.status.real_soc) / 2;
@@ -758,7 +758,7 @@ void update_SOC() {
     datalayer.battery.status.reported_soc = datalayer.battery2.status.real_soc;
   }
 
-#endif  //TODO: Constrain according to the user settings. Help wanted on algoritm to use.
+#endif  //DOUBLE_BATTERY
 }
 
 void update_values_inverter() {
diff --git a/Software/src/battery/NISSAN-LEAF-BATTERY.cpp b/Software/src/battery/NISSAN-LEAF-BATTERY.cpp
index 99c13777..48e527cb 100644
--- a/Software/src/battery/NISSAN-LEAF-BATTERY.cpp
+++ b/Software/src/battery/NISSAN-LEAF-BATTERY.cpp
@@ -1249,6 +1249,12 @@ void setup_battery(void) {  // Performs one time setup at startup
   datalayer.battery.info.max_design_voltage_dV =
       4040;  // 404.4V, over this, charging is not possible (goes into forced discharge)
   datalayer.battery.info.min_design_voltage_dV = 2600;  // 260.0V under this, discharging further is disabled
+
+#ifdef DOUBLE_BATTERY
+  datalayer.battery2.info.number_of_cells = datalayer.battery.info.number_of_cells;
+  datalayer.battery2.info.max_design_voltage_dV = datalayer.battery.info.max_design_voltage_dV;
+  datalayer.battery2.info.min_design_voltage_dV = datalayer.battery.info.min_design_voltage_dV;
+#endif  //DOUBLE_BATTERY
 }
 
 #endif
diff --git a/Software/src/devboard/webserver/cellmonitor_html.cpp b/Software/src/devboard/webserver/cellmonitor_html.cpp
index cb514bb0..21a5c1df 100644
--- a/Software/src/devboard/webserver/cellmonitor_html.cpp
+++ b/Software/src/devboard/webserver/cellmonitor_html.cpp
@@ -12,13 +12,25 @@ String cellmonitor_processor(const String& var) {
     content += ".cell { width: 48%; margin: 1%; padding: 10px; border: 1px solid white; text-align: center; }";
     content += ".low-voltage { color: red; }";              // Style for low voltage text
     content += ".voltage-values { margin-bottom: 10px; }";  // Style for voltage values section
+#ifdef DOUBLE_BATTERY
+    content +=
+        "#graph, #graph2 {display: flex;align-items: flex-end;height: 200px;border: 1px solid #ccc;position: "
+        "relative;}";
+#else
     content += "#graph {display: flex;align-items: flex-end;height: 200px;border: 1px solid #ccc;position: relative;}";
+#endif
     content +=
         ".bar {margin: 0 0px;background-color: blue;display: inline-block;position: relative;cursor: pointer;border: "
         "1px solid white; /* Add this line */}";
+#ifdef DOUBLE_BATTERY
+    content += "#valueDisplay, #valueDisplay2 {text-align: left;font-weight: bold;margin-top: 10px;}";
+#else
     content += "#valueDisplay {text-align: left;font-weight: bold;margin-top: 10px;}";
+#endif
     content += "</style>";
 
+    content += "<button onclick='home()'>Back to main page</button>";
+
     // Start a new block with a specific background color
     content += "<div style='background-color: #303E47; padding: 10px; margin-bottom: 10px; border-radius: 50px'>";
 
@@ -33,7 +45,26 @@ String cellmonitor_processor(const String& var) {
 
     // Close the block
     content += "</div>";
+
+#ifdef DOUBLE_BATTERY
+    // Start a new block with a specific background color
+    content += "<div style='background-color: #303E41; padding: 10px; margin-bottom: 10px; border-radius: 50px'>";
+
+    // Display max, min, and deviation voltage values
+    content += "<div id='voltageValues2' class='voltage-values'></div>";
+    // Display cells
+    content += "<div id='cellContainer2' class='container'></div>";
+    // Display bars
+    content += "<div id='graph2'></div>";
+    // Display single hovered value
+    content += "<div id='valueDisplay2'>Value: ...</div>";
+
+    // Close the block
+    content += "</div>";
+
     content += "<button onclick='home()'>Back to main page</button>";
+#endif  // DOUBLE_BATTERY
+
     content += "<script>";
     // Populate cell data
     content += "const data = [";
@@ -149,8 +180,123 @@ String cellmonitor_processor(const String& var) {
         "available';";
     content += "}";
 
+#ifdef DOUBLE_BATTERY
+    // Populate cell data
+    content += "const data2 = [";
+    for (uint8_t i = 0u; i < datalayer.battery2.info.number_of_cells; i++) {
+      if (datalayer.battery2.status.cell_voltages_mV[i] == 0) {
+        continue;
+      }
+      content += String(datalayer.battery2.status.cell_voltages_mV[i]) + ",";
+    }
+    content += "];";
+
+    content += "const min_mv2 = Math.min(...data2) - 20;";
+    content += "const max_mv2 = Math.max(...data2) + 20;";
+    content += "const min_index2 = data2.indexOf(Math.min(...data2));";
+    content += "const max_index2 = data2.indexOf(Math.max(...data2));";
+    content += "const graphContainer2 = document.getElementById('graph2');";
+    content += "const valueDisplay2 = document.getElementById('valueDisplay2');";
+    content += "const cellContainer2 = document.getElementById('cellContainer2');";
+
+    // Arduino-style map() function
+    content +=
+        "function map2(value, fromLow, fromHigh, toLow, toHigh) {return (value - fromLow) * (toHigh - toLow) / "
+        "(fromHigh - fromLow) + toLow;}";
+
+    // Mark cell and bar with highest/lowest values
+    content +=
+        "function checkMinMax2(cell2, bar2, index2) {if ((index2 == min_index2) || (index2 == max_index2)) "
+        "{cell2.style.borderColor = 'red';bar2.style.borderColor = 'red';}}";
+
+    // Bar function. Basically get the mV, scale the height and add a bar div to its container
+    content +=
+        "function createBars2(data2) {"
+        "data2.forEach((mV, index2) => {"
+        "const bar2 = document.createElement('div');"
+        "const mV_limited2 = map2(mV, min_mv2, max_mv2, 20, 200);"
+        "bar2.className = 'bar';"
+        "bar2.id = `barIndex2${index2}`;"
+        "bar2.style.height = `${mV_limited2}px`;"
+        "bar2.style.width = `${750/data2.length}px`;"
+
+        "const cell2 = document.getElementById(`cellIndex2${index2}`);"
+
+        "checkMinMax2(cell2, bar2, index2);"
+
+        "bar2.addEventListener('mouseenter', () => {"
+        "valueDisplay2.textContent = `Value: ${mV}`;"
+        "bar2.style.backgroundColor = `lightblue`;"
+        "cell2.style.backgroundColor = `blue`;"
+        "});"
+
+        "bar2.addEventListener('mouseleave', () => {"
+        "valueDisplay2.textContent = 'Value: ...';"
+        "bar2.style.backgroundColor = `blue`;"
+        "cell2.style.removeProperty('background-color');"
+        "});"
+
+        "graphContainer2.appendChild(bar2);"
+        "});"
+        "}";
+
+    // Cell population function. For each value, add a cell block with its value
+    content +=
+        "function createCells2(data2) {"
+        "data2.forEach((mV, index2) => {"
+        "const cell2 = document.createElement('div');"
+        "cell2.className = 'cell';"
+        "cell2.id = `cellIndex2${index2}`;"
+        "let cellContent2 = `Cell ${index2 + 1}<br>${mV} mV`;"
+        "if (mV < 3000) {"
+        "cellContent2 = `<span class='low-voltage'>${cellContent2}</span>`;"
+        "}"
+        "cell2.innerHTML = cellContent2;"
+
+        "cell2.addEventListener('mouseenter', () => {"
+        "let bar2 = document.getElementById(`barIndex2${index2}`);"
+        "valueDisplay2.textContent = `Value: ${mV}`;"
+        "bar2.style.backgroundColor = `lightblue`;"
+        "cell2.style.backgroundColor = `blue`;"
+        "});"
+
+        "cell2.addEventListener('mouseleave', () => {"
+        "let bar2 = document.getElementById(`barIndex2${index2}`);"
+        "bar2.style.backgroundColor = `blue`;"
+        "cell2.style.removeProperty('background-color');"
+        "});"
+
+        "cellContainer2.appendChild(cell2);"
+        "});"
+        "}";
+
+    // On fetch, update the header of max/min/deviation client-side for consistency
+    content +=
+        "function updateVoltageValues2(data2) {"
+        "const min_mv2 = Math.min(...data2);"
+        "const max_mv2 = Math.max(...data2);"
+        "const cell_dev2 = max_mv2 - min_mv2;"
+        "const voltVal2 = document.getElementById('voltageValues2');"
+        "voltVal2.innerHTML = `Max Voltage : ${max_mv2} mV<br>Min Voltage: ${min_mv2} mV<br>Voltage Deviation: "
+        "${cell_dev2} mV`"
+        "}";
+
+    // If we have values, do the thing. Otherwise, display friendly message and wait
+    content += "if (data2.length != 0) {";
+    content += "createCells2(data2);";
+    content += "createBars2(data2);";
+    content += "updateVoltageValues2(data2);";
+    content += "}";
+    content += "else {";
+    content +=
+        "document.getElementById('voltageValues2').textContent = 'Cell information not yet fetched, or information not "
+        "available';";
+    content += "}";
+
+#endif  //DOUBLE_BATTERY
+
     // Automatic refresh is nice
-    content += "setTimeout(function(){ location.reload(true); }, 10000);";
+    content += "setTimeout(function(){ location.reload(true); }, 20000);";
 
     content += "</script>";
     return content;