diff --git a/src/W800_SDK_v1.00.10/app/app_drivers/watch_peripherals/watch_peripherals.c b/src/W800_SDK_v1.00.10/app/app_drivers/watch_peripherals/watch_peripherals.c
index 04aa104..be4559a 100644
--- a/src/W800_SDK_v1.00.10/app/app_drivers/watch_peripherals/watch_peripherals.c
+++ b/src/W800_SDK_v1.00.10/app/app_drivers/watch_peripherals/watch_peripherals.c
@@ -312,7 +312,7 @@ void watch_peripherals_register_battery_controller_status_change_cb(BatteryContr
 uint16_t watch_peripherals_get_battery_voltage(battery_unit_e unit)
 {
     tls_gpio_write(BATTERY_VOLTAGE_DIVIDER_ENABLE, 1);
-    int batteryVoltage = adc_get_inputVolt(BATTERY_VOLTAGE_ADC_CHANNEL, 1, 1) * 2 + _adc_offset;
+    int batteryVoltage = adc_get_inputVolt_with_gains(BATTERY_VOLTAGE_ADC_CHANNEL, 1, 1) * 2 + _adc_offset;
     tls_gpio_write(BATTERY_VOLTAGE_DIVIDER_ENABLE, 0);
 
     switch (unit)
diff --git a/src/W800_SDK_v1.00.10/include/driver/wm_adc.h b/src/W800_SDK_v1.00.10/include/driver/wm_adc.h
index 891bd50..a85d3ca 100644
--- a/src/W800_SDK_v1.00.10/include/driver/wm_adc.h
+++ b/src/W800_SDK_v1.00.10/include/driver/wm_adc.h
@@ -270,7 +270,23 @@ int adc_get_interTemp(void);
  *
  * @note            None
  */
-int adc_get_inputVolt(u8 channel, u8 gain1, u8 gain2);
+int adc_get_inputVolt(u8 channel);
+
+/** NOT PART OF THE OFFICIAL SDK **/
+/**
+ * @brief           This function is used to read input voltage also allowing to
+ * 					specify ADC gains.
+ *
+ * @param[in]      	channel    adc channel,from 0 to 3 is single input;8 and 9 is differential input.
+ * @param[in]       gain1	   ADC PGA gain 1
+ * @param[in]       gain2	   ADC PGA gain 2
+ *
+ * @retval          voltage    unit:mV
+ *
+ * @note            None
+ */
+int adc_get_inputVolt_with_gains(u8 channel, u8 gain1, u8 gain2);
+/**********************************/
 
 /**
  * @brief           This function is used to read internal voltage.
diff --git a/src/W800_SDK_v1.00.10/platform/drivers/adc/wm_adc.c b/src/W800_SDK_v1.00.10/platform/drivers/adc/wm_adc.c
index 41c313a..5d05490 100644
--- a/src/W800_SDK_v1.00.10/platform/drivers/adc/wm_adc.c
+++ b/src/W800_SDK_v1.00.10/platform/drivers/adc/wm_adc.c
@@ -532,7 +532,7 @@ int adc_get_interTemp(void)
 	return adc_temp();
 }
 
-int adc_get_inputVolt(u8 channel, u8 gain1, u8 gain2)
+int adc_get_inputVolt(u8 channel)
 {
 	int average = 0;
 	double voltage = 0.0;
@@ -544,7 +544,7 @@ int adc_get_inputVolt(u8 channel, u8 gain1, u8 gain2)
 	
 	tls_adc_init(0, 0); 
 	tls_adc_reference_sel(ADC_REFERENCE_INTERNAL);
-	tls_adc_set_pga(gain1, gain2);
+	tls_adc_set_pga(1,1);
 	tls_adc_set_clk(0x28);	
 	tls_adc_start_with_cpu(channel);
 
@@ -567,6 +567,43 @@ int adc_get_inputVolt(u8 channel, u8 gain1, u8 gain2)
     return average;
 }
 
+/** NOT PART OF THE OFFICIAL SDK **/
+int adc_get_inputVolt_with_gains(u8 channel, u8 gain1, u8 gain2)
+{
+	int average = 0;
+	double voltage = 0.0;
+
+	if(_polyfit_param.poly_n == 0 || (channel == 8) || (channel == 9))
+	{
+		adc_get_offset();
+	}
+	
+	tls_adc_init(0, 0); 
+	tls_adc_reference_sel(ADC_REFERENCE_INTERNAL);
+	tls_adc_set_pga(gain1, gain2);
+	tls_adc_set_clk(0x28);	
+	tls_adc_start_with_cpu(channel);
+
+	waitForAdcDone();
+	average = tls_read_adc_result();
+	signedToUnsignedData(&average);
+	tls_adc_stop(0);
+
+	if ((channel == 8) || (channel == 9))
+	{
+		voltage = ((double)average - (double)adc_offset)/4.0;
+		voltage = voltage*(126363/1000)/1000000;
+	}
+	else
+	{
+		return cal_voltage((double)average);
+	}
+
+	average = (int)(voltage*1000);
+    return average;
+}
+/**********************************/
+
 u32 adc_get_interVolt(void)
 {
 	u32 voltValue;
diff --git a/src/W800_SDK_v1.00.10/src/app/factorycmd/factory_atcmd.c b/src/W800_SDK_v1.00.10/src/app/factorycmd/factory_atcmd.c
index ac2db68..1b8516c 100644
--- a/src/W800_SDK_v1.00.10/src/app/factorycmd/factory_atcmd.c
+++ b/src/W800_SDK_v1.00.10/src/app/factorycmd/factory_atcmd.c
@@ -934,7 +934,7 @@ static int factory_atcmd_adc_vol_proc( struct factory_atcmd_token_t *tok, char *
 		if (val & (1 << i))
 		{
 			wm_adc_config(i);
-			voltage[i] = adc_get_inputVolt(i, 1, 1);
+			voltage[i] = adc_get_inputVolt(i);
 		}
 	}
 	*res_len = sprintf(res_resp, "+OK=%d,%d,%d,%d\r\n", voltage[0], voltage[1], voltage[2], voltage[3]);