diff --git a/firmware/application/src/utils/syssleep.h b/firmware/application/src/utils/syssleep.h
index 78325f7..6a44619 100644
--- a/firmware/application/src/utils/syssleep.h
+++ b/firmware/application/src/utils/syssleep.h
@@ -14,6 +14,7 @@
 #define SLEEP_DELAY_MS_FIELD_125KHZ_LOST        3000    // 低频模拟卡离开场后的休眠延迟
 #define SLEEP_DELAY_MS_BLE_DISCONNECTED         4000    // BLE断开后的休眠延迟
 #define SLEEP_DELAY_MS_USB_POWER_DISCONNECTED   3000    // USB供电断开后的休眠延迟
+#define SLEEP_NO_BATTERY_SHUTDOWN               1       // 低电量关机
 
 
 void sleep_timer_init(void);