diff --git a/esphome/components/daly_bms/daly_bms.cpp b/esphome/components/daly_bms/daly_bms.cpp
index 8f6fc0fb57..929f31e008 100644
--- a/esphome/components/daly_bms/daly_bms.cpp
+++ b/esphome/components/daly_bms/daly_bms.cpp
@@ -298,6 +298,12 @@ void DalyBmsComponent::decode_data_(std::vector<uint8_t> data) {
                 if (this->cell_16_voltage_sensor_) {
                   this->cell_16_voltage_sensor_->publish_state((float) encode_uint16(it[5], it[6]) / 1000);
                 }
+                if (this->cell_17_voltage_sensor_) {
+                  this->cell_17_voltage_sensor_->publish_state((float) encode_uint16(it[7], it[8]) / 1000);
+                }
+                if (this->cell_18_voltage_sensor_) {
+                  this->cell_18_voltage_sensor_->publish_state((float) encode_uint16(it[9], it[10]) / 1000);
+                }
                 break;
             }
             break;
diff --git a/esphome/components/daly_bms/daly_bms.h b/esphome/components/daly_bms/daly_bms.h
index 52ea30ecde..e6d476bcdd 100644
--- a/esphome/components/daly_bms/daly_bms.h
+++ b/esphome/components/daly_bms/daly_bms.h
@@ -54,6 +54,8 @@ class DalyBmsComponent : public PollingComponent, public uart::UARTDevice {
   SUB_SENSOR(cell_14_voltage)
   SUB_SENSOR(cell_15_voltage)
   SUB_SENSOR(cell_16_voltage)
+  SUB_SENSOR(cell_17_voltage)
+  SUB_SENSOR(cell_18_voltage)
 #endif
 
 #ifdef USE_TEXT_SENSOR
diff --git a/esphome/components/daly_bms/sensor.py b/esphome/components/daly_bms/sensor.py
index c447fbd8a2..6d78946a02 100644
--- a/esphome/components/daly_bms/sensor.py
+++ b/esphome/components/daly_bms/sensor.py
@@ -52,6 +52,8 @@ CONF_CELL_13_VOLTAGE = "cell_13_voltage"
 CONF_CELL_14_VOLTAGE = "cell_14_voltage"
 CONF_CELL_15_VOLTAGE = "cell_15_voltage"
 CONF_CELL_16_VOLTAGE = "cell_16_voltage"
+CONF_CELL_17_VOLTAGE = "cell_17_voltage"
+CONF_CELL_18_VOLTAGE = "cell_18_voltage"
 ICON_CURRENT_DC = "mdi:current-dc"
 ICON_BATTERY_OUTLINE = "mdi:battery-outline"
 ICON_THERMOMETER_CHEVRON_UP = "mdi:thermometer-chevron-up"
@@ -92,6 +94,8 @@ TYPES = [
     CONF_CELL_14_VOLTAGE,
     CONF_CELL_15_VOLTAGE,
     CONF_CELL_16_VOLTAGE,
+    CONF_CELL_17_VOLTAGE,
+    CONF_CELL_18_VOLTAGE,
 ]
 
 CELL_VOLTAGE_SCHEMA = sensor.sensor_schema(
@@ -212,6 +216,8 @@ CONFIG_SCHEMA = cv.All(
             cv.Optional(CONF_CELL_14_VOLTAGE): CELL_VOLTAGE_SCHEMA,
             cv.Optional(CONF_CELL_15_VOLTAGE): CELL_VOLTAGE_SCHEMA,
             cv.Optional(CONF_CELL_16_VOLTAGE): CELL_VOLTAGE_SCHEMA,
+            cv.Optional(CONF_CELL_17_VOLTAGE): CELL_VOLTAGE_SCHEMA,
+            cv.Optional(CONF_CELL_18_VOLTAGE): CELL_VOLTAGE_SCHEMA,
         }
     ).extend(cv.COMPONENT_SCHEMA)
 )