diff --git a/code/application/source/sf_app/code/source/battery/sf_battery.c b/code/application/source/sf_app/code/source/battery/sf_battery.c
index 4f16020d1..e4b289a76 100755
--- a/code/application/source/sf_app/code/source/battery/sf_battery.c
+++ b/code/application/source/sf_app/code/source/battery/sf_battery.c
@@ -103,7 +103,30 @@ UINT32 sf_battery_voltage_convert(UINT32 resistanceGnd, UINT32 resistanceVin, UI
 	 */
 
 	//volt = 27  * adcVal * (resistanceGnd + resistanceVin) / resistanceGnd / 511;
-	volt = 27  * adcVal * (resistanceGnd + resistanceVin) / resistanceGnd / 2696;
+	//volt = 27  * adcVal * (resistanceGnd + resistanceVin) / resistanceGnd / 2696;
+    volt = (27  * adcVal + 3097) / 531;
+	return volt;
+}
+
+/*************************************************
+   Function: sf_aa_battery_voltage_convert
+   Description: battery voltage convert
+   Input:  resistanceGnd:Grounding terminal resistance,resistanceVin:Input resistance,adcVal:adc val
+   Output: N/A
+   Return: Volt * 10
+   Others: N/A
+*************************************************/
+UINT32 sf_aa_battery_voltage_convert(UINT32 resistanceGnd, UINT32 resistanceVin, UINT32 adcVal)
+{
+	UINT32 volt = 0;
+
+	/*511 * (detected voltage) / (SARADC reference voltage)
+	   DC input voltage x resistanceGnd/(resistanceGnd + resistanceVin) = detected voltage,
+	   SARADC reference voltage:1.8V
+	 */
+
+	//volt = 27  * adcVal * (resistanceGnd + resistanceVin) / resistanceGnd / 511;
+	volt = (27  * adcVal + 554) / 539;
 	return volt;
 }
 
@@ -112,10 +135,20 @@ UINT32 sf_battery_convert_to_adc(UINT32 resistanceGnd, UINT32 resistanceVin, UIN
 	UINT32 adcVal = 0;
 
 	//adcVal = volt * resistanceGnd * 511 / 27 / (resistanceGnd + resistanceVin);
-	adcVal = volt * resistanceGnd * 2696 / 27 / (resistanceGnd + resistanceVin);
+	//adcVal = volt * resistanceGnd * 2696 / 27 / (resistanceGnd + resistanceVin);
+    adcVal = (volt * 531 - 3097) / 27;
 	return adcVal;
 }
 
+UINT32 sf_aa_battery_convert_to_adc(UINT32 resistanceGnd, UINT32 resistanceVin, UINT32 volt)
+{
+	UINT32 adcVal = 0;
+
+	//adcVal = volt * resistanceGnd * 511 / 27 / (resistanceGnd + resistanceVin);
+	//adcVal = volt * resistanceGnd * 2696 / 27 / (resistanceGnd + resistanceVin);
+    adcVal = (volt * 539 - 554) / 27;
+	return adcVal;
+}
 UINT32 sf_get_max_value(UINT32 *_ValueList)
 {
 	UINT8 readBatCnt = 0;
@@ -320,7 +353,7 @@ UINT32 sf_battery_adc_value_get_once(void)
 
     if(sf_adc_value_get(SF_ADC_BATT, &batAdc) == SUCCESS)
     {
-        batVoltageVal = sf_battery_voltage_convert(24, 100, batAdc);
+        batVoltageVal = sf_aa_battery_voltage_convert(24, 100, batAdc);
         //batVoltageVal += 2;
         if(puiPara->BatteryLogSwitch)
 		    printf("Bat ADC Value:%d After Convert:%d(%d.%dV)\n",batAdc,batVoltageVal,batVoltageVal/10,batVoltageVal%10);
@@ -638,7 +671,7 @@ signed int sf_battery_value_fast_get(void)
 
 					if(puiPara->BatteryLogSwitch)
 					{
-						printf("%s:%d [%d]Other Battery ADC Value=%d,After Convert:%d(%d.%dV)\n", __FUNCTION__, __LINE__, readBatCnt + 1, sf_battery_convert_to_adc(24, 100, batValueList[readBatCnt]),
+						printf("%s:%d [%d]Other Battery ADC Value=%d,After Convert:%d(%d.%dV)\n", __FUNCTION__, __LINE__, readBatCnt + 1, sf_aa_battery_convert_to_adc(24, 100, batValueList[readBatCnt]),
 						       batValueList[readBatCnt], batValueList[readBatCnt] / 10, batValueList[readBatCnt] % 10);
 					}
 				}
@@ -844,7 +877,7 @@ void sf_battery_level_polling(void)
 					}
 					else
 					{
-						printf("[average]Other Battery Adc:%d After Convert:(%d.%dV)\n\n", sf_battery_convert_to_adc(24, 100, BatVoltageVal),BatVoltageVal / 10, BatVoltageVal % 10);
+						printf("[average]Other Battery Adc:%d After Convert:(%d.%dV)\n\n", sf_aa_battery_convert_to_adc(24, 100, BatVoltageVal),BatVoltageVal / 10, BatVoltageVal % 10);
 					}
 				}
 			}
diff --git a/rtos/code/driver/na51089/source/mcu/sf_battery.c b/rtos/code/driver/na51089/source/mcu/sf_battery.c
index d64dd0dbf..480819130 100755
--- a/rtos/code/driver/na51089/source/mcu/sf_battery.c
+++ b/rtos/code/driver/na51089/source/mcu/sf_battery.c
@@ -107,7 +107,30 @@ UINT32 sf_battery_voltage_convert(UINT32 resistanceGnd, UINT32 resistanceVin, UI
 	 */
 
 	//volt = 27  * adcVal * (resistanceGnd + resistanceVin) / resistanceGnd / 511;
-	volt = 27  * adcVal * (resistanceGnd + resistanceVin) / resistanceGnd / 2696;
+	//volt = 27  * adcVal * (resistanceGnd + resistanceVin) / resistanceGnd / 2696;
+    volt = (27  * adcVal + 3097) / 531;
+	return volt;
+}
+
+/*************************************************
+   Function: sf_aa_battery_voltage_convert
+   Description: battery voltage convert
+   Input:  resistanceGnd:Grounding terminal resistance,resistanceVin:Input resistance,adcVal:adc val
+   Output: N/A
+   Return: Volt * 10
+   Others: N/A
+*************************************************/
+UINT32 sf_aa_battery_voltage_convert(UINT32 resistanceGnd, UINT32 resistanceVin, UINT32 adcVal)
+{
+	UINT32 volt = 0;
+
+	/*511 * (detected voltage) / (SARADC reference voltage)
+	   DC input voltage x resistanceGnd/(resistanceGnd + resistanceVin) = detected voltage,
+	   SARADC reference voltage:1.8V
+	 */
+
+	//volt = 27  * adcVal * (resistanceGnd + resistanceVin) / resistanceGnd / 511;
+	volt = (27  * adcVal + 554) / 539;
 	return volt;
 }
 
@@ -116,10 +139,19 @@ UINT32 sf_battery_convert_to_adc(UINT32 resistanceGnd, UINT32 resistanceVin, UIN
 	UINT32 adcVal = 0;
 
 	//adcVal = volt * resistanceGnd * 511 / 27 / (resistanceGnd + resistanceVin);
-	adcVal = volt * resistanceGnd * 2696 / 27 / (resistanceGnd + resistanceVin);
+	//adcVal = volt * resistanceGnd * 2696 / 27 / (resistanceGnd + resistanceVin);
+    adcVal = (volt * 531 - 3097) / 27;
 	return adcVal;
 }
+UINT32 sf_aa_battery_convert_to_adc(UINT32 resistanceGnd, UINT32 resistanceVin, UINT32 volt)
+{
+	UINT32 adcVal = 0;
 
+	//adcVal = volt * resistanceGnd * 511 / 27 / (resistanceGnd + resistanceVin);
+	//adcVal = volt * resistanceGnd * 2696 / 27 / (resistanceGnd + resistanceVin);
+    adcVal = (volt * 539 - 554) / 27;
+	return adcVal;
+}
 UINT32 sf_get_max_value(UINT32 *_ValueList)
 {
 	UINT8 readBatCnt = 0;
@@ -349,7 +381,7 @@ UINT32 sf_battery_adc_value_get_once(void)
     {
         if(sf_adc_value_get(SF_ADC_BATT, &batAdc) == SUCCESS)
         {
-            batVoltageVal = sf_battery_voltage_convert(24, 100, batAdc);
+            batVoltageVal = sf_aa_battery_voltage_convert(24, 100, batAdc);
             //batVoltageVal += 4;
             if(puiPara->BatteryLogSwitch)
                 printf("Bat ADC Value:%lu After Convert:%lu(%lu.%luV)\n",batAdc,batVoltageVal,batVoltageVal/10,batVoltageVal%10);
@@ -663,7 +695,7 @@ signed int sf_battery_value_fast_get(void)
 
 					if(puiPara->BatteryLogSwitch)
 					{
-						printf("%s:%d [%d]Other Battery ADC Value=%lu,After Convert:%lu(%lu.%luV)\n", __FUNCTION__, __LINE__, readBatCnt + 1, sf_battery_convert_to_adc(24, 100, batValueList[readBatCnt]),
+						printf("%s:%d [%d]Other Battery ADC Value=%lu,After Convert:%lu(%lu.%luV)\n", __FUNCTION__, __LINE__, readBatCnt + 1, sf_aa_battery_convert_to_adc(24, 100, batValueList[readBatCnt]),
 						       batValueList[readBatCnt], batValueList[readBatCnt] / 10, batValueList[readBatCnt] % 10);
 					}
 				}
@@ -1692,7 +1724,7 @@ void sf_battery_print(void)
     }
     else
     {
-        printf("Other ADC Value=%lu V:(%lu.%luV)\n", sf_battery_convert_to_adc(24, 100, BatVoltageVal), BatVoltageVal / 10, BatVoltageVal % 10);
+        printf("Other ADC Value=%lu V:(%lu.%luV)\n", sf_aa_battery_convert_to_adc(24, 100, BatVoltageVal), BatVoltageVal / 10, BatVoltageVal % 10);
     }
 }
 #endif