diff --git a/code/application/source/cardv/SrcCode/System/main.c b/code/application/source/cardv/SrcCode/System/main.c
index 8d94cf74d..0c7c274ce 100755
--- a/code/application/source/cardv/SrcCode/System/main.c
+++ b/code/application/source/cardv/SrcCode/System/main.c
@@ -332,11 +332,13 @@ UINT8 sf_cardv_check_power_on_mode(void)
     char *pStrOtsOk = "Mode=";
     char *pStrUpFw = "UpFw=";
     char *pStrUpMcu = "mcu=";
+    char *pStrSF = "sf=";
 
     char *temp = NULL;
 	UINT8 startup = 0;
 	UINT8 UpFw = 0;
 	UINT8 Upmcu = 0;
+	UINT8 sftmp = 0;
 
     system("cat /proc/cmdline > /tmp/Mode.txt");
     fp = fopen("/tmp/Mode.txt","r");
@@ -371,7 +373,13 @@ UINT8 sf_cardv_check_power_on_mode(void)
             sscanf(temp, "%hhd", &Upmcu);
             sf_set_mcu_update_flag(Upmcu);
 		}
-        SLOGI("StartMode=%d,UpFw=%d Upmcu=%d\r\n", startup, UpFw, Upmcu);
+        temp = strstr(pStrSrc, pStrSF);
+		if ( temp != NULL) {
+            temp += strlen("sf=");
+            sscanf(temp, "%hhd", &sftmp);
+            sf_cardv_battery_level_set(sftmp);
+		}
+        SLOGI("StartMode=%d,UpFw=%d Upmcu=%d sftmp=%d\r\n", startup, UpFw, Upmcu, sftmp);
 		free(pStrSrc);
 	}
 
diff --git a/code/lib/source/sifar/code/include/sf_common.h b/code/lib/source/sifar/code/include/sf_common.h
index 9a89bcc59..4e5a64c44 100755
--- a/code/lib/source/sifar/code/include/sf_common.h
+++ b/code/lib/source/sifar/code/include/sf_common.h
@@ -205,4 +205,5 @@ void sf_set_net_generation(UINT8 value);
 UINT32 sf_cardv_load_menu_info_start(void);
 BOOL sf_vos_perf_list_dump(unsigned char argc, char **argv);
 void sf_mem_free(void);
+void sf_cardv_battery_level_set(UINT32 val);
 #endif
diff --git a/code/lib/source/sifar/code/source/common/sf_common.c b/code/lib/source/sifar/code/source/common/sf_common.c
index c5c78bdd1..3661bee63 100755
--- a/code/lib/source/sifar/code/source/common/sf_common.c
+++ b/code/lib/source/sifar/code/source/common/sf_common.c
@@ -2521,7 +2521,18 @@ UINT32 sf_cardv_battery_level_get(void)
 	return (UINT32)sf_LatestBattLevel;
 }
 
-
+/*************************************************
+   Function:    sf_battery_level_set
+   Description: set battery level
+   Input:  N/A
+   Output: N/A
+   Return: N/A
+   Others: N/A
+*************************************************/
+void sf_cardv_battery_level_set(UINT32 val)
+{
+	sf_LatestBattLevel = val;
+}
 /*************************************************
   Function:    sf_battery_value_get
   Description: get battery value x%
diff --git a/rtos/code/application/source/cardv/SrcCode/System/sys_linuxboot.c b/rtos/code/application/source/cardv/SrcCode/System/sys_linuxboot.c
index aa75b4ee1..1615806e6 100644
--- a/rtos/code/application/source/cardv/SrcCode/System/sys_linuxboot.c
+++ b/rtos/code/application/source/cardv/SrcCode/System/sys_linuxboot.c
@@ -25,6 +25,7 @@
 #include "sys_fastboot.h"
 #if HUNTING_CAMERA_MCU == ENABLE
 #include "sf_mcu.h"
+#include "sf_battery.h"
 #endif
 #define CFG_BOOTARG_EXTRA_MAX_LEN 0x100 /* for init.d script parsing by (dmesg | grep xxx) */
 
@@ -854,7 +855,7 @@ static int make_bootargs(LINUXTMP_PARTITION *p_linuxtmp, unsigned int bootts_beg
     //     }
     // }
 
-    snprintf(PowerOnModeStr, sizeof(PowerOnModeStr), "Mode=%d UpFw=%d mcu=%d",sf_get_power_on_mode(), sf_in_update() , sf_in_mcu_update());
+    snprintf(PowerOnModeStr, sizeof(PowerOnModeStr), "Mode=%d UpFw=%d mcu=%d sf=%d",sf_get_power_on_mode(), sf_in_update() , sf_in_mcu_update(), sf_battery_level_get());
     linuxboot_set_extra_bootarg(PowerOnModeStr);
 #endif
 	p_linuxtmp->bootargs_addr = p_linuxtmp->tmp_curr;