diff --git a/Software/Software.ino b/Software/Software.ino
index 4f9a1078..16a1b66d 100644
--- a/Software/Software.ino
+++ b/Software/Software.ino
@@ -47,7 +47,6 @@ const char* version_number = "9.0.experimental";
 volatile unsigned long currentMillis = 0;
 unsigned long previousMillis10ms = 0;
 unsigned long previousMillisUpdateVal = 0;
-unsigned long lastMillisOverflowCheck = 0;
 #ifdef FUNCTION_TIME_MEASUREMENT
 // Task time measurement for debugging
 MyTimer core_task_timer_10s(INTERVAL_10_S);
@@ -347,15 +346,6 @@ void init_serial() {
 #endif  // DEBUG_VIA_USB
 }
 
-void update_overflow(unsigned long currentMillis) {
-  // Check if millis overflowed
-  if (currentMillis < lastMillisOverflowCheck) {
-    // We have overflowed, increase rollover count
-    datalayer.system.status.millisrolloverCount++;
-  }
-  lastMillisOverflowCheck = currentMillis;
-}
-
 void check_interconnect_available() {
   if (datalayer.battery.status.voltage_dV == 0 || datalayer.battery2.status.voltage_dV == 0) {
     return;  // Both voltage values need to be available to start check
@@ -543,8 +533,6 @@ void update_calculated_values() {
       datalayer.battery.status.reported_remaining_capacity_Wh = datalayer.battery2.status.remaining_capacity_Wh;
     }
   }
-
-  update_overflow(currentMillis);  // Update millis rollover count
 }
 
 void check_reset_reason() {
@@ -602,9 +590,3 @@ void check_reset_reason() {
       break;
   }
 }
-
-uint64_t get_timestamp(unsigned long currentMillis) {
-  update_overflow(currentMillis);
-  return (uint64_t)datalayer.system.status.millisrolloverCount * (uint64_t)std::numeric_limits<uint32_t>::max() +
-         (uint64_t)currentMillis;
-}
diff --git a/Software/src/battery/BATTERIES.cpp b/Software/src/battery/BATTERIES.cpp
index f327ed58..82d64787 100644
--- a/Software/src/battery/BATTERIES.cpp
+++ b/Software/src/battery/BATTERIES.cpp
@@ -94,6 +94,8 @@ const char* name_for_battery_type(BatteryType type) {
       return MebBattery::Name;
     case BatteryType::Mg5:
       return Mg5Battery::Name;
+    case BatteryType::MgHsPhev:
+      return MgHsPHEVBattery::Name;
     case BatteryType::NissanLeaf:
       return NissanLeafBattery::Name;
     case BatteryType::Pylon:
@@ -189,6 +191,8 @@ Battery* create_battery(BatteryType type) {
       return new MebBattery();
     case BatteryType::Mg5:
       return new Mg5Battery();
+    case BatteryType::MgHsPhev:
+      return new MgHsPHEVBattery();
     case BatteryType::NissanLeaf:
       return new NissanLeafBattery();
     case BatteryType::Pylon:
diff --git a/Software/src/battery/KIA-E-GMP-BATTERY.cpp b/Software/src/battery/KIA-E-GMP-BATTERY.cpp
index c5ddf979..3016877d 100644
--- a/Software/src/battery/KIA-E-GMP-BATTERY.cpp
+++ b/Software/src/battery/KIA-E-GMP-BATTERY.cpp
@@ -811,6 +811,29 @@ void KiaEGmpBattery::
 #endif
 }
 
+// Getter implementations for HTML renderer
+int KiaEGmpBattery::get_battery_12V() const {
+  return leadAcidBatteryVoltage;
+}
+int KiaEGmpBattery::get_waterleakageSensor() const {
+  return waterleakageSensor;
+}
+int KiaEGmpBattery::get_temperature_water_inlet() const {
+  return temperature_water_inlet;
+}
+int KiaEGmpBattery::get_powerRelayTemperature() const {
+  return powerRelayTemperature;
+}
+int KiaEGmpBattery::get_batteryManagementMode() const {
+  return batteryManagementMode;
+}
+int KiaEGmpBattery::get_BMS_ign() const {
+  return BMS_ign;
+}
+int KiaEGmpBattery::get_batRelay() const {
+  return batteryRelay;
+}
+
 void KiaEGmpBattery::handle_incoming_can_frame(CAN_frame rx_frame) {
   startedUp = true;
   switch (rx_frame.ID) {
diff --git a/Software/src/battery/KIA-E-GMP-BATTERY.h b/Software/src/battery/KIA-E-GMP-BATTERY.h
index 06fc025c..bf1c769e 100644
--- a/Software/src/battery/KIA-E-GMP-BATTERY.h
+++ b/Software/src/battery/KIA-E-GMP-BATTERY.h
@@ -1,6 +1,7 @@
 #ifndef KIA_E_GMP_BATTERY_H
 #define KIA_E_GMP_BATTERY_H
 #include "CanBattery.h"
+#include "KIA-E-GMP-HTML.h"
 
 #define ESTIMATE_SOC_FROM_CELLVOLTAGE
 
@@ -10,13 +11,24 @@
 
 class KiaEGmpBattery : public CanBattery {
  public:
+  KiaEGmpBattery() : renderer(*this) {}
   virtual void setup(void);
   virtual void handle_incoming_can_frame(CAN_frame rx_frame);
   virtual void update_values();
   virtual void transmit_can(unsigned long currentMillis);
   static constexpr const char* Name = "Kia/Hyundai EGMP platform";
+  BatteryHtmlRenderer& get_status_renderer() { return renderer; }
+  // Getter implementations for HTML renderer
+  int get_battery_12V() const;
+  int get_waterleakageSensor() const;
+  int get_temperature_water_inlet() const;
+  int get_powerRelayTemperature() const;
+  int get_batteryManagementMode() const;
+  int get_BMS_ign() const;
+  int get_batRelay() const;
 
  private:
+  KiaEGMPHtmlRenderer renderer;
   uint16_t estimateSOC(uint16_t packVoltage, uint16_t cellCount, int16_t currentAmps);
   void set_voltage_minmax_limits();
 
@@ -39,9 +51,9 @@ class KiaEGmpBattery : public CanBattery {
 
   uint16_t inverterVoltageFrameHigh = 0;
   uint16_t inverterVoltage = 0;
-  uint16_t soc_calculated = 0;
-  uint16_t SOC_BMS = 0;
-  uint16_t SOC_Display = 0;
+  uint16_t soc_calculated = 500;
+  uint16_t SOC_BMS = 500;
+  uint16_t SOC_Display = 500;
   uint16_t SOC_estimated_lowest = 0;
   uint16_t SOC_estimated_highest = 0;
   uint16_t batterySOH = 1000;
@@ -50,24 +62,24 @@ class KiaEGmpBattery : public CanBattery {
   uint16_t batteryVoltage = 6700;
   int16_t leadAcidBatteryVoltage = 120;
   int16_t batteryAmps = 0;
-  int16_t temperatureMax = 0;
-  int16_t temperatureMin = 0;
+  int16_t temperatureMax = 20;
+  int16_t temperatureMin = 20;
   int16_t allowedDischargePower = 0;
   int16_t allowedChargePower = 0;
   int16_t poll_data_pid = 0;
   uint8_t CellVmaxNo = 0;
   uint8_t CellVminNo = 0;
   uint8_t batteryManagementMode = 0;
-  uint8_t BMS_ign = 0;
+  uint8_t BMS_ign = 0xff;
   uint8_t batteryRelay = 0;
   uint8_t waterleakageSensor = 164;
   bool startedUp = false;
   bool ok_start_polling_battery = false;
   uint8_t counter_200 = 0;
   uint8_t KIA_7E4_COUNTER = 0x01;
-  int8_t temperature_water_inlet = 0;
-  int8_t powerRelayTemperature = 0;
-  int8_t heatertemp = 0;
+  int8_t temperature_water_inlet = 20;
+  int8_t powerRelayTemperature = 10;
+  int8_t heatertemp = 20;
   bool set_voltage_limits = false;
   uint8_t ticks_200ms_counter = 0;
   uint8_t EGMP_1CF_counter = 0;
diff --git a/Software/src/battery/KIA-E-GMP-HTML.cpp b/Software/src/battery/KIA-E-GMP-HTML.cpp
new file mode 100644
index 00000000..67044dac
--- /dev/null
+++ b/Software/src/battery/KIA-E-GMP-HTML.cpp
@@ -0,0 +1,15 @@
+#include "KIA-E-GMP-HTML.h"
+#include "KIA-E-GMP-BATTERY.h"
+
+String KiaEGMPHtmlRenderer::get_status_html() {
+  String content;
+  content += "<h4>Cells: " + String(datalayer.battery.info.number_of_cells) + "S</h4>";
+  content += "<h4>12V voltage: " + String(batt.get_battery_12V() / 10.0, 1) + "</h4>";
+  content += "<h4>Waterleakage: " + String(batt.get_waterleakageSensor()) + "</h4>";
+  content += "<h4>Temperature, water inlet: " + String(batt.get_temperature_water_inlet()) + "</h4>";
+  content += "<h4>Temperature, power relay: " + String(batt.get_powerRelayTemperature() * 2) + "</h4>";
+  content += "<h4>Batterymanagement mode: " + String(batt.get_batteryManagementMode()) + "</h4>";
+  content += "<h4>BMS ignition: " + String(batt.get_BMS_ign()) + "</h4>";
+  content += "<h4>Battery relay: " + String(batt.get_batRelay()) + "</h4>";
+  return content;
+}
diff --git a/Software/src/battery/KIA-E-GMP-HTML.h b/Software/src/battery/KIA-E-GMP-HTML.h
new file mode 100644
index 00000000..545cff0e
--- /dev/null
+++ b/Software/src/battery/KIA-E-GMP-HTML.h
@@ -0,0 +1,18 @@
+#ifndef _KIA_E_GMP_HTML_H
+#define _KIA_E_GMP_HTML_H
+
+#include "../datalayer/datalayer.h"
+#include "../devboard/webserver/BatteryHtmlRenderer.h"
+
+class KiaEGmpBattery;
+
+class KiaEGMPHtmlRenderer : public BatteryHtmlRenderer {
+ private:
+  KiaEGmpBattery& batt;
+
+ public:
+  KiaEGMPHtmlRenderer(KiaEGmpBattery& b) : batt(b) {}
+  String get_status_html();
+};
+
+#endif
diff --git a/Software/src/battery/MG-HS-PHEV-BATTERY.cpp b/Software/src/battery/MG-HS-PHEV-BATTERY.cpp
index a9d6f881..e0e96e6d 100644
--- a/Software/src/battery/MG-HS-PHEV-BATTERY.cpp
+++ b/Software/src/battery/MG-HS-PHEV-BATTERY.cpp
@@ -1,4 +1,3 @@
-#ifdef MG_HS_PHEV_BATTERY_H
 #include "MG-HS-PHEV-BATTERY.h"
 #include "../communication/can/comm_can.h"
 #include "../communication/contactorcontrol/comm_contactorcontrol.h"
@@ -381,5 +380,3 @@ void MgHsPHEVBattery::setup(void) {  // Performs one time setup at startup
   datalayer.battery.info.total_capacity_Wh = BATTERY_WH_MAX;
   datalayer.battery.info.number_of_cells = 90;
 }
-
-#endif
diff --git a/Software/src/datalayer/datalayer.h b/Software/src/datalayer/datalayer.h
index 2598999d..769c5cd9 100644
--- a/Software/src/datalayer/datalayer.h
+++ b/Software/src/datalayer/datalayer.h
@@ -250,8 +250,6 @@ struct DATALAYER_SYSTEM_INFO_TYPE {
 };
 
 struct DATALAYER_SYSTEM_STATUS_TYPE {
-  /** Millis rollover count. Increments every 49.7 days. Used for keeping track on events */
-  uint8_t millisrolloverCount = 0;
 #ifdef FUNCTION_TIME_MEASUREMENT
   /** Core task measurement variable */
   int64_t core_task_max_us = 0;
diff --git a/Software/src/devboard/utils/events.cpp b/Software/src/devboard/utils/events.cpp
index eb11271f..353d6802 100644
--- a/Software/src/devboard/utils/events.cpp
+++ b/Software/src/devboard/utils/events.cpp
@@ -398,8 +398,6 @@ EVENTS_LEVEL_TYPE get_event_level(void) {
   return events.level;
 }
 
-uint64_t get_timestamp(unsigned long currentMillis);
-
 /* Local functions */
 
 static void set_event(EVENTS_ENUM_TYPE event, uint8_t data, bool latched) {
@@ -418,7 +416,7 @@ static void set_event(EVENTS_ENUM_TYPE event, uint8_t data, bool latched) {
   }
 
   // We should set the event, update event info
-  events.entries[event].timestamp = get_timestamp(millis());
+  events.entries[event].timestamp = millis64();
   events.entries[event].data = data;
   // Check if the event is latching
   events.entries[event].state = latched ? EVENT_STATE_ACTIVE_LATCHED : EVENT_STATE_ACTIVE;
diff --git a/Software/src/devboard/utils/events.h b/Software/src/devboard/utils/events.h
index 506e244b..2e88b491 100644
--- a/Software/src/devboard/utils/events.h
+++ b/Software/src/devboard/utils/events.h
@@ -3,6 +3,7 @@
 
 #include <WString.h>
 #include <stdint.h>
+#include "millis64.h"
 #include "types.h"
 
 #define GENERATE_ENUM(ENUM) ENUM,
diff --git a/Software/src/devboard/utils/millis64.cpp b/Software/src/devboard/utils/millis64.cpp
new file mode 100644
index 00000000..7057b751
--- /dev/null
+++ b/Software/src/devboard/utils/millis64.cpp
@@ -0,0 +1,12 @@
+#include <Arduino.h>
+#include "esp_timer.h"
+
+uint64_t ARDUINO_ISR_ATTR millis64() {
+  // ESP32's esp_timer_get_time() returns time in microseconds, we convert to
+  // milliseconds by dividing by 1000.
+
+  // This is almost identical to the existing Arduino millis() function, except
+  // we return a 64-bit value which won't roll over for 600k years.
+
+  return esp_timer_get_time() / 1000ULL;
+}
diff --git a/Software/src/devboard/utils/millis64.h b/Software/src/devboard/utils/millis64.h
new file mode 100644
index 00000000..59e98686
--- /dev/null
+++ b/Software/src/devboard/utils/millis64.h
@@ -0,0 +1,11 @@
+#include <stdint.h>
+
+/**
+ * @brief Return ESP32's high-resolution timer in milliseconds, as a 64 bit value.
+ * 
+ * @param[in] void
+ * 
+ * @return uint64_t Timestamp in milliseconds
+ * 
+ */
+extern uint64_t millis64(void);
diff --git a/Software/src/devboard/webserver/events_html.cpp b/Software/src/devboard/webserver/events_html.cpp
index 3171aa27..737e8735 100644
--- a/Software/src/devboard/webserver/events_html.cpp
+++ b/Software/src/devboard/webserver/events_html.cpp
@@ -2,6 +2,7 @@
 #include <limits>
 #include "../../datalayer/datalayer.h"
 #include "../../devboard/utils/logging.h"
+#include "../../devboard/utils/millis64.h"
 
 const char EVENTS_HTML_START[] = R"=====(
 <style>body{background-color:#000;color:#fff}.event-log{display:flex;flex-direction:column}.event{display:flex;flex-wrap:wrap;border:1px solid #fff;padding:10px}.event>div{flex:1;min-width:100px;max-width:90%;word-break:break-word}</style><div style="background-color:#303e47;padding:10px;margin-bottom:10px;border-radius:25px"><div class="event-log"><div class="event" style="background-color:#1e2c33;font-weight:700"><div>Event Type</div><div>Severity</div><div>Last Event</div><div>Count</div><div>Data</div><div>Message</div></div>
@@ -17,8 +18,6 @@ button:hover { background-color: #3A4A52; }</style>
 </script>
 )=====";
 
-uint64_t get_timestamp(unsigned long currentMillis);
-
 static std::vector<EventData> order_events;
 
 String events_processor(const String& var) {
@@ -40,7 +39,7 @@ String events_processor(const String& var) {
     }
     // Sort events by timestamp
     std::sort(order_events.begin(), order_events.end(), compareEventsByTimestampDesc);
-    uint64_t current_timestamp = get_timestamp(millis());
+    uint64_t current_timestamp = millis64();
 
     // Generate HTML and debug output
     for (const auto& event : order_events) {
diff --git a/Software/src/lib/YiannisBourkelis-Uptime-Library/src/uptime.cpp b/Software/src/lib/YiannisBourkelis-Uptime-Library/src/uptime.cpp
index 6b711651..20c59214 100644
--- a/Software/src/lib/YiannisBourkelis-Uptime-Library/src/uptime.cpp
+++ b/Software/src/lib/YiannisBourkelis-Uptime-Library/src/uptime.cpp
@@ -36,25 +36,16 @@
  * https://github.com/YiannisBourkelis/
  */
 
-#include <Arduino.h> //for millis()
+#include "../../../devboard/utils/millis64.h"
 #include "uptime.h"
 
 //private variabes for converting milliseconds to total seconds,minutes,hours and days
 //after each call to millis()
-unsigned long uptime::m_milliseconds;
-unsigned long uptime::m_seconds;
-unsigned long uptime::m_minutes;
-unsigned long uptime::m_hours;
-unsigned long uptime::m_days;
-
-//in case of millis() overflow, we store in these private variables
-//the existing time passed until the moment of the overflow
-//so that we can add them on the next call to compute the time passed
-unsigned long uptime::m_last_milliseconds = 0;   
-unsigned long uptime::m_remaining_seconds = 0;
-unsigned long uptime::m_remaining_minutes = 0;
-unsigned long uptime::m_remaining_hours = 0;
-unsigned long uptime::m_remaining_days = 0;
+uint64_t uptime::m_milliseconds;
+uint64_t uptime::m_seconds;
+uint64_t uptime::m_minutes;
+uint64_t uptime::m_hours;
+uint64_t uptime::m_days;
 
 //private variables that in combination hold the actual time passed
 //Use the coresponding uptime::get_.... to read these private variables
@@ -90,26 +81,13 @@ unsigned long uptime::getDays()
 //and store them in their static variables
 void uptime::calculateUptime()
 {
-  uptime::m_milliseconds = millis();
-  
-  if (uptime::m_last_milliseconds > uptime::m_milliseconds){
-    //in case of millis() overflow, store existing passed seconds,minutes,hours and days
-    uptime::m_remaining_seconds = uptime::m_mod_seconds;
-    uptime::m_remaining_minutes = uptime::m_mod_minutes;
-    uptime::m_remaining_hours   = uptime::m_mod_hours;
-    uptime::m_remaining_days    = uptime::m_days;
-  }
-  //store last millis(), so that we can detect on the next call
-  //if there is a millis() overflow ( millis() returns 0 )
-  uptime::m_last_milliseconds = uptime::m_milliseconds;
+  uptime::m_milliseconds = millis64();
 
   //convert passed millis to total seconds, minutes, hours and days.
-  //In case of overflow, the uptime::m_remaining_... variables contain the remaining time before the overflow.
-  //We add the remaining time, so that we can continue measuring the time passed from the last boot of the device.
-  uptime::m_seconds      = (uptime::m_milliseconds / 1000) + uptime::m_remaining_seconds;
-  uptime::m_minutes      = (uptime::m_seconds      / 60)   + uptime::m_remaining_minutes;
-  uptime::m_hours        = (uptime::m_minutes      / 60)   + uptime::m_remaining_hours;
-  uptime::m_days         = (uptime::m_hours        / 24)   + uptime::m_remaining_days;
+  uptime::m_seconds      = (uptime::m_milliseconds / 1000);
+  uptime::m_minutes      = (uptime::m_seconds      / 60);
+  uptime::m_hours        = (uptime::m_minutes      / 60);
+  uptime::m_days         = (uptime::m_hours        / 24);
 
   //calculate the actual time passed, using modulus, in milliseconds, seconds and hours.
   //The days are calculated allready in the previous step. 
diff --git a/Software/src/lib/YiannisBourkelis-Uptime-Library/src/uptime.h b/Software/src/lib/YiannisBourkelis-Uptime-Library/src/uptime.h
index fc00bbb7..ba16904f 100644
--- a/Software/src/lib/YiannisBourkelis-Uptime-Library/src/uptime.h
+++ b/Software/src/lib/YiannisBourkelis-Uptime-Library/src/uptime.h
@@ -53,21 +53,15 @@ class uptime
     static unsigned long getDays();
       
   private:
-    static unsigned long m_milliseconds;
-    static unsigned long m_seconds;
-    static unsigned long m_minutes;
-    static unsigned long m_hours;
-    static unsigned long m_days;
+    static uint64_t m_milliseconds;
+    static uint64_t m_seconds;
+    static uint64_t m_minutes;
+    static uint64_t m_hours;
+    static uint64_t m_days;
 
     static unsigned long m_mod_milliseconds;
     static uint8_t m_mod_seconds;
     static uint8_t m_mod_minutes;
     static uint8_t m_mod_hours;
-    
-    static unsigned long m_last_milliseconds;  
-    static unsigned long m_remaining_seconds;
-    static unsigned long m_remaining_minutes;
-    static unsigned long m_remaining_hours;
-    static unsigned long m_remaining_days;
 };
 #endif
diff --git a/test/emul/time.cpp b/test/emul/time.cpp
index 7e97f46e..f8f1283c 100644
--- a/test/emul/time.cpp
+++ b/test/emul/time.cpp
@@ -7,3 +7,7 @@ unsigned long millis() {
 uint64_t get_timestamp(unsigned long millis) {
   return 0;
 }
+
+uint64_t millis64(void) {
+  return 0;
+}