diff --git a/include/data_model.h b/include/data_model.h
index 670b799..4f0568d 100644
--- a/include/data_model.h
+++ b/include/data_model.h
@@ -47,6 +47,9 @@ struct MeterData {
 struct SenderStatus {
   MeterData last_data;
   uint32_t last_update_ts_utc;
+  uint32_t rx_batches_total;
+  uint32_t rx_batches_duplicate;
+  uint32_t rx_last_duplicate_ts_utc;
   bool has_data;
 };
 
diff --git a/src/display_ui.cpp b/src/display_ui.cpp
index 1f0196a..31cea5b 100644
--- a/src/display_ui.cpp
+++ b/src/display_ui.cpp
@@ -356,22 +356,29 @@ static void render_receiver_sender(uint8_t index) {
   display.setCursor(0, 32);
   display.printf("L2 %dW", static_cast<int>(round_power_w(status.last_data.phase_power_w[1])));
   display.setCursor(0, 42);
-  display.printf("L3 %dW", static_cast<int>(round_power_w(status.last_data.phase_power_w[2])));
+  display.printf("L3 %dW P%dW",
+                 static_cast<int>(round_power_w(status.last_data.phase_power_w[2])),
+                 static_cast<int>(round_power_w(status.last_data.total_power_w)));
   display.setCursor(0, 52);
-  display.print("P");
-  char p_buf[16];
-  snprintf(p_buf, sizeof(p_buf), "%dW", static_cast<int>(round_power_w(status.last_data.total_power_w)));
-  int16_t x1 = 0;
-  int16_t y1 = 0;
-  uint16_t w = 0;
-  uint16_t h = 0;
-  display.getTextBounds(p_buf, 0, 0, &x1, &y1, &w, &h);
-  int16_t x = static_cast<int16_t>(display.width() - w);
-  if (x < 0) {
-    x = 0;
+  uint32_t total_batches = status.rx_batches_total;
+  uint32_t duplicate_batches = status.rx_batches_duplicate;
+  float duplicate_pct = 0.0f;
+  if (total_batches > 0) {
+    duplicate_pct = (static_cast<float>(duplicate_batches) * 100.0f) / static_cast<float>(total_batches);
   }
-  display.setCursor(x, 52);
-  display.print(p_buf);
+  char dup_time[6];
+  strncpy(dup_time, "--:--", sizeof(dup_time));
+  dup_time[sizeof(dup_time) - 1] = '\0';
+  if (status.rx_last_duplicate_ts_utc > 0 && time_is_synced()) {
+    time_t t = static_cast<time_t>(status.rx_last_duplicate_ts_utc);
+    struct tm timeinfo;
+    localtime_r(&t, &timeinfo);
+    snprintf(dup_time, sizeof(dup_time), "%02d:%02d", timeinfo.tm_hour, timeinfo.tm_min);
+  }
+  display.printf("Dup %.1f%%(%lu) %s",
+                 static_cast<double>(duplicate_pct),
+                 static_cast<unsigned long>(duplicate_batches),
+                 dup_time);
   display.display();
 }
 
diff --git a/src/main.cpp b/src/main.cpp
index 160bc18..8f8ba27 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -274,6 +274,9 @@ static void init_sender_statuses() {
     g_sender_statuses[i] = {};
     g_sender_statuses[i].has_data = false;
     g_sender_statuses[i].last_update_ts_utc = 0;
+    g_sender_statuses[i].rx_batches_total = 0;
+    g_sender_statuses[i].rx_batches_duplicate = 0;
+    g_sender_statuses[i].rx_last_duplicate_ts_utc = 0;
     g_sender_statuses[i].last_data.short_id = EXPECTED_SENDER_IDS[i];
     snprintf(g_sender_statuses[i].last_data.device_id, sizeof(g_sender_statuses[i].last_data.device_id), "dd3-%04X", EXPECTED_SENDER_IDS[i]);
     g_sender_faults_remote[i] = {};
@@ -1261,6 +1264,22 @@ static void receiver_loop() {
         }
 
         bool duplicate = sender_idx >= 0 && g_last_batch_id_rx[sender_idx] == batch_id;
+        if (sender_idx >= 0) {
+          SenderStatus &status = g_sender_statuses[sender_idx];
+          if (status.rx_batches_total < UINT32_MAX) {
+            status.rx_batches_total++;
+          }
+          if (duplicate) {
+            if (status.rx_batches_duplicate < UINT32_MAX) {
+              status.rx_batches_duplicate++;
+            }
+            uint32_t duplicate_ts = time_get_utc();
+            if (duplicate_ts == 0) {
+              duplicate_ts = batch.t_last;
+            }
+            status.rx_last_duplicate_ts_utc = duplicate_ts;
+          }
+        }
         send_batch_ack(batch_id, batch.n);
         if (duplicate) {
           goto receiver_loop_done;
diff --git a/src/web_server.cpp b/src/web_server.cpp
index d702a47..65edb7c 100644
--- a/src/web_server.cpp
+++ b/src/web_server.cpp
@@ -412,6 +412,17 @@ static String render_sender_block(const SenderStatus &status) {
          String(round_power_w(status.last_data.phase_power_w[2])) + " W<br>";
     s += "Battery: " + String(status.last_data.battery_percent) + "% (" + String(status.last_data.battery_voltage_v, 2) + " V)";
   }
+  uint32_t total_batches = status.rx_batches_total;
+  uint32_t duplicate_batches = status.rx_batches_duplicate;
+  float duplicate_pct = 0.0f;
+  if (total_batches > 0) {
+    duplicate_pct = (static_cast<float>(duplicate_batches) * 100.0f) / static_cast<float>(total_batches);
+  }
+  s += "<br>Dup batches: " + String(duplicate_batches) + "/" + String(total_batches) + " (" + String(duplicate_pct, 1) + "%)";
+  s += " last: " + format_utc_timestamp(status.rx_last_duplicate_ts_utc);
+  if (time_is_synced() && status.rx_last_duplicate_ts_utc > 0) {
+    s += " (" + String(timestamp_age_seconds(status.rx_last_duplicate_ts_utc)) + "s ago)";
+  }
   s += "</div>";
   return s;
 }