diff --git a/README.md b/README.md
index 18fc85a..89b5871 100644
--- a/README.md
+++ b/README.md
@@ -13,10 +13,11 @@
 
 
 开机，蜂鸣器响一声 OK
-开机，检查电量     
+开机，检查电量 OK 
 
 
-修改电量检测，电量过低时，指示灯闪烁三下后进入低功耗。
+修改电量检测，电量过低时，指示灯闪烁三下后进入低功耗。OK
+
 
 
 开始采集，蜂鸣器响一声，结束采集，蜂鸣器响一声。
diff --git a/app/src/board/board.h b/app/src/board/board.h
index c6d7427..353717f 100644
--- a/app/src/board/board.h
+++ b/app/src/board/board.h
@@ -70,4 +70,6 @@
 
 #define APP_AUTO_SLEEP_TIMEOUT_MS (10 * 1000)
 #define APP_BYTE_EACH_FRAME       9
-#define APP_SENSOR_NUM            3
\ No newline at end of file
+#define APP_SENSOR_NUM            3
+
+#define APP_LOW_BATTERY_LIMIT 2
\ No newline at end of file
diff --git a/app/src/board/board_battery_state.c b/app/src/board/board_battery_state.c
index 2e27006..21cb7b2 100644
--- a/app/src/board/board_battery_state.c
+++ b/app/src/board/board_battery_state.c
@@ -1,8 +1,14 @@
 
 #include "board_battery_state.h"
 
-void BoardBattery_init() {}
-void BoardBattery_load() {
+void        BoardBattery_init() {}
+static bool m_is_load = false;
+void        BoardBattery_load() {
+  if (m_is_load) {
+    return;
+  }
+
+  m_is_load                     = true;
   nrf_drv_saadc_config_t adccfg = NRFX_SAADC_DEFAULT_CONFIG;
   adccfg.resolution             = NRF_SAADC_RESOLUTION_12BIT;  // 4096 等于满采样率
   ZERROR_CHECK(nrf_drv_saadc_init(&adccfg, NULL));
@@ -11,7 +17,10 @@ void BoardBattery_load() {
   channel_config.acq_time                   = NRF_SAADC_ACQTIME_20US;
   ZERROR_CHECK(nrfx_saadc_channel_init(BATTERY_ADC_CHANNEL, &channel_config));
 }
-void BoardBattery_unload() { nrf_drv_saadc_uninit(); }
+void BoardBattery_unload() {
+  m_is_load = false;
+  nrf_drv_saadc_uninit();
+}
 
 int16_t BoardBattery_get_adc_val() {
   int16_t val = znrf_adc_channel_read_val(BATTERY_ADC_CHANNEL);
@@ -27,10 +36,17 @@ int16_t BoardBattery_get_battery_level() {
 
   float   percent     = (voltage - minv) / (maxv - minv) * 100 + (float)0.1 /*加0.1是为了避免999.999时显示电量为90*/;
   int16_t percent_int = (int16_t)percent;
-  if (percent_int < 10 && percent_int != 0) {
-    percent_int = 3;
-  } else {
-    percent_int = percent_int / 10 * 10;
+  if (percent_int < 0) {
+    percent_int = 0;
+  } else if (percent_int > 100) {
+    percent_int = 100;
   }
-  return percent_int;
+
+  // if (percent_int < 10 && percent_int != 0) {
+  //   percent_int = 3;
+  // } else {
+  //   percent_int = percent_int / 10 * 10;
+  // }
+  return 10;
+  // return percent_int;
 }
diff --git a/app/src/board/board_light_ctrl.c b/app/src/board/board_light_ctrl.c
index 17a437c..d158ef6 100644
--- a/app/src/board/board_light_ctrl.c
+++ b/app/src/board/board_light_ctrl.c
@@ -64,7 +64,7 @@ void BoardLight_setGreenLightState(bool state) {
   m_boardlight_greenlightstate = state;
 #if LIGHT_PWM_DRIVER
   if (state) {
-    light_ctrl.seq_values.channel_0 = 95;  // 设置占空比，数值最大不超过 top_value
+    light_ctrl.seq_values.channel_0 = 99;  // 设置占空比，数值最大不超过 top_value
     nrfx_pwm_simple_playback(&light_ctrl.driver, &light_ctrl.seq, 1, NRF_DRV_PWM_FLAG_LOOP);
   } else {
     nrfx_pwm_stop(&light_ctrl.driver, true);
diff --git a/app/src/device_ctrl_service.c b/app/src/device_ctrl_service.c
index 0502eee..fe067bb 100644
--- a/app/src/device_ctrl_service.c
+++ b/app/src/device_ctrl_service.c
@@ -256,7 +256,6 @@ void DeviceCtrl_stopSample() {
  *                                   EXTERN                                    *
  *******************************************************************************/
 
-
 void DeviceCtrl_init() {
   // 蜂鸣器初始化
   BoardBeepCtrl_init();
@@ -275,7 +274,20 @@ void DeviceCtrl_init() {
   // 监听蓝牙事件
   zble_module_reglistener(zble_event_listener);
 
-  BoardLight_blockFlash(3, 100);
+  // BoardLight_blockFlash(3, 100);
+
+  BoardBattery_load();
+  if (BoardBattery_get_battery_level() < APP_LOW_BATTERY_LIMIT) {
+    BoardLight_blockFlash(3, 100);
+
+    // 系统进入深度睡眠,进入深度睡眠前，使能唤醒引脚
+    BoardButton_enable_sense();
+    app_timer_stop_all();
+    sd_power_system_off();
+    NVIC_SystemReset();
+    m_ispoweron = false;
+  }
+
   // 切换到待机状态
   prvf_change_to_ready_state();