diff --git a/main/boards/common/adc_battery_monitor.cc b/main/boards/common/adc_battery_monitor.cc
index 9edf11cb..3164d13a 100644
--- a/main/boards/common/adc_battery_monitor.cc
+++ b/main/boards/common/adc_battery_monitor.cc
@@ -3,21 +3,23 @@
 AdcBatteryMonitor::AdcBatteryMonitor(adc_unit_t adc_unit, adc_channel_t adc_channel, float upper_resistor, float lower_resistor, gpio_num_t charging_pin)
     : charging_pin_(charging_pin) {
     
-    // Initialize charging pin
-    gpio_config_t gpio_cfg = {
-        .pin_bit_mask = 1ULL << charging_pin,
-        .mode = GPIO_MODE_INPUT,
-        .pull_up_en = GPIO_PULLUP_DISABLE,
-        .pull_down_en = GPIO_PULLDOWN_DISABLE,
-        .intr_type = GPIO_INTR_DISABLE,
-    };
-    ESP_ERROR_CHECK(gpio_config(&gpio_cfg));
+    // Initialize charging pin (only if it's not NC)
+    if (charging_pin_ != GPIO_NUM_NC) {
+        gpio_config_t gpio_cfg = {
+            .pin_bit_mask = 1ULL << charging_pin,
+            .mode = GPIO_MODE_INPUT,
+            .pull_up_en = GPIO_PULLUP_DISABLE,
+            .pull_down_en = GPIO_PULLDOWN_DISABLE,
+            .intr_type = GPIO_INTR_DISABLE,
+        };
+        ESP_ERROR_CHECK(gpio_config(&gpio_cfg));
+    }
 
     // Initialize ADC battery estimation
     adc_battery_estimation_t adc_cfg = {
         .internal = {
             .adc_unit = adc_unit,
-            .adc_bitwidth = ADC_BITWIDTH_12,
+            .adc_bitwidth = ADC_BITWIDTH_DEFAULT,
             .adc_atten = ADC_ATTEN_DB_12,
         },
         .adc_channel = adc_channel,
@@ -26,7 +28,10 @@ AdcBatteryMonitor::AdcBatteryMonitor(adc_unit_t adc_unit, adc_channel_t adc_chan
     };
     adc_cfg.charging_detect_cb = [](void *user_data) -> bool {
         AdcBatteryMonitor *self = (AdcBatteryMonitor *)user_data;
-        return gpio_get_level(self->charging_pin_) == 1;
+        if(self->charging_pin_ == GPIO_NUM_NC)
+            return false;
+        else
+            return gpio_get_level(self->charging_pin_) == 1;
     };
     adc_cfg.charging_detect_user_data = this;
     adc_battery_estimation_handle_ = adc_battery_estimation_create(&adc_cfg);
@@ -48,11 +53,31 @@ AdcBatteryMonitor::~AdcBatteryMonitor() {
     if (adc_battery_estimation_handle_) {
         ESP_ERROR_CHECK(adc_battery_estimation_destroy(adc_battery_estimation_handle_));
     }
+    
+    if (timer_handle_) {
+        esp_timer_stop(timer_handle_);
+        esp_timer_delete(timer_handle_);
+    }
 }
 
 bool AdcBatteryMonitor::IsCharging() {
+    // 如果没有充电检测引脚，直接返回false
+    if (charging_pin_ == GPIO_NUM_NC) {
+        return false;
+    }
+    
+    // 如果句柄无效，回退到直接读取GPIO
+    if (adc_battery_estimation_handle_ == nullptr) {
+        return gpio_get_level(charging_pin_) == 1;
+    }
+    
+    // 尝试通过adc_battery_estimation获取状态
     bool is_charging = false;
-    ESP_ERROR_CHECK(adc_battery_estimation_get_charging_state(adc_battery_estimation_handle_, &is_charging));
+    esp_err_t err = adc_battery_estimation_get_charging_state(adc_battery_estimation_handle_, &is_charging);
+    if (err != ESP_OK) {
+        // 如果调用失败，回退到直接读取GPIO引脚状态
+        return gpio_get_level(charging_pin_) == 1;
+    }
     return is_charging;
 }
 
@@ -61,9 +86,17 @@ bool AdcBatteryMonitor::IsDischarging() {
 }
 
 uint8_t AdcBatteryMonitor::GetBatteryLevel() {
+    // 如果句柄无效，返回默认值
+    if (adc_battery_estimation_handle_ == nullptr) {
+        return 100;
+    }
+    
     float capacity = 0;
-    ESP_ERROR_CHECK(adc_battery_estimation_get_capacity(adc_battery_estimation_handle_, &capacity));
-    return capacity;
+    esp_err_t err = adc_battery_estimation_get_capacity(adc_battery_estimation_handle_, &capacity);
+    if (err != ESP_OK) {
+        return 100; // 出错时返回默认值
+    }
+    return (uint8_t)capacity;
 }
 
 void AdcBatteryMonitor::OnChargingStatusChanged(std::function<void(bool)> callback) {
@@ -71,6 +104,11 @@ void AdcBatteryMonitor::OnChargingStatusChanged(std::function<void(bool)> callba
 }
 
 void AdcBatteryMonitor::CheckBatteryStatus() {
+    // 避免在GPIO_NUM_NC情况下进行检查
+    if (charging_pin_ == GPIO_NUM_NC) {
+        return;
+    }
+    
     bool new_charging_status = IsCharging();
     if (new_charging_status != is_charging_) {
         is_charging_ = new_charging_status;