diff --git a/app_config.h b/app_config.h
index 23e237f..25e4612 100644
--- a/app_config.h
+++ b/app_config.h
@@ -83,7 +83,7 @@ extern "C"
 // SoftDevice BLE event handler
 #define NRF_SDH_BLE_ENABLED                         1
 // The number of vendor-specific UUIDs.
-#define NRF_SDH_BLE_VS_UUID_COUNT                   0
+#define NRF_SDH_BLE_VS_UUID_COUNT                   1
 // Attribute Table size in bytes. The size must be a multiple of 4.
 #define NRF_SDH_BLE_GATTS_ATTR_TAB_SIZE             1408
 // BLE Observers - Observers and priority levels
@@ -128,12 +128,14 @@ extern "C"
 #define MINOR_PRODUCT_NUMBER 4
 #define MAJOR_VERSION_NUMBER 1
 #define MINOR_VERSION_NUMBER 0
+#define BLE_EIS_ENABLED      1
 #elif (DEF_ELITE_MODEL == DEF_ELITE_EIS_11)
 #define ELITE_DEVICE_NAME    "EIS"
 #define MAJOR_PRODUCT_NUMBER 0
 #define MINOR_PRODUCT_NUMBER 4
 #define MAJOR_VERSION_NUMBER 1
 #define MINOR_VERSION_NUMBER 1
+#define BLE_EIS_ENABLED      1
 #elif (DEF_ELITE_MODEL == DEF_ELITE_EIS_MINI_10)
 #define ELITE_DEVICE_NAME    "EIS"
 #define MAJOR_PRODUCT_NUMBER 0
diff --git a/bmd380_peripheral.vcxproj b/bmd380_peripheral.vcxproj
index b598214..f80c015 100644
--- a/bmd380_peripheral.vcxproj
+++ b/bmd380_peripheral.vcxproj
@@ -163,6 +163,7 @@
     </ClCompile>
     <ClCompile Include="le_adv.c" />
     <ClCompile Include="le_bas.c" />
+    <ClCompile Include="le_eis_srv.c" />
     <ClCompile Include="le_gap.c" />
     <ClCompile Include="le_gatt.c" />
     <ClCompile Include="le_srv.c" />
diff --git a/bmd380_peripheral.vcxproj.filters b/bmd380_peripheral.vcxproj.filters
index 58fae81..4422578 100644
--- a/bmd380_peripheral.vcxproj.filters
+++ b/bmd380_peripheral.vcxproj.filters
@@ -1356,6 +1356,9 @@
     <ClCompile Include="le_srv.c">
       <Filter>Source files</Filter>
     </ClCompile>
+    <ClCompile Include="le_eis_srv.c">
+      <Filter>Source files</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <None Include="nRF52840_XXAA_S140_reserve.lds">
diff --git a/le_eis_srv.c b/le_eis_srv.c
new file mode 100644
index 0000000..7b67c38
--- /dev/null
+++ b/le_eis_srv.c
@@ -0,0 +1,65 @@
+#include "sdk_common.h"
+#if NRF_MODULE_ENABLED(BLE_EIS)
+
+#include "app_error.h"
+#include "ble_gatts.h"
+#include "ble_srv_common.h"
+#include "nrf_sdh_ble.h"
+
+#include <stdlib.h>
+#include <string.h>
+
+/**< Used vendor specific UUID. */
+#define BLE_EIS_BASE_UUID                                                                                  \
+    {                                                                                                      \
+        {                                                                                                  \
+            0x4D, 0x3C, 0x56, 0x45, 0x12, 0x8B, 0x44, 0x1D, 0x8D, 0x6F, 0xC5, 0x95, 0x00, 0x00, 0x9B, 0xD8 \
+        }                                                                                                  \
+    }
+#define BLE_UUID_EIS_SERVICE 0x0001
+
+typedef struct
+{
+    uint16_t conn_handle;
+    uint16_t service_handle;
+} ble_eis_t;
+
+typedef struct
+{
+    uint16_t battery_volt;
+} ble_eis_init_t;
+
+static ble_eis_t ble_eis;
+
+static uint32_t ble_eis_init(ble_eis_init_t const *p_eis_init)
+{
+    uint32_t err_code;
+    ble_uuid128_t base_uuid = BLE_EIS_BASE_UUID;
+    ble_uuid_t ble_uuid     = {
+            .type = BLE_UUID_TYPE_UNKNOWN,
+            .uuid = BLE_UUID_EIS_SERVICE,
+    };
+
+    // Adding vendor specific UUID to the SoftDevice
+    err_code = sd_ble_uuid_vs_add(&base_uuid, &ble_uuid.type);
+    APP_ERROR_CHECK(err_code);
+
+    // Adding proprietary service to the SoftDevice
+    err_code = sd_ble_gatts_service_add(BLE_GATTS_SRVC_TYPE_PRIMARY, &ble_uuid, &ble_eis.service_handle);
+    APP_ERROR_CHECK(err_code);
+
+    return NRF_SUCCESS;
+}
+
+void le_eis_init(void)
+{
+    ble_eis_init_t eis_init;
+    memset(&eis_init, 0x00, sizeof(eis_init));
+
+    extern uint16_t bas_volt_read(void);
+    eis_init.battery_volt = bas_volt_read();
+    ret_code_t err_code   = ble_eis_init(&eis_init);
+    APP_ERROR_CHECK(err_code);
+}
+
+#endif // NRF_MODULE_ENABLED(BLE_EIS)
diff --git a/le_srv.c b/le_srv.c
index d9c52c8..d8ce81b 100644
--- a/le_srv.c
+++ b/le_srv.c
@@ -28,11 +28,11 @@ extern "C"
 }
 #endif
 
-#define MANUFACTURER_NAME       "MEMCHIP" /**< Manufacturer. Will be passed to Device Information Service. */
-#define HW_REV                  STRINGIFY(MAJOR_PRODUCT_NUMBER) "." STRINGIFY(MINOR_PRODUCT_NUMBER) "." STRINGIFY(MAJOR_VERSION_NUMBER) "." STRINGIFY(MINOR_VERSION_NUMBER)
-#define FW_REV                  "0.1.0"
-#define SER_NUM                 "0000-00-00-00001"
-#define MODULE_NAME             ELITE_DEVICE_NAME
+#define MANUFACTURER_NAME "MEMCHIP" /**< Manufacturer. Will be passed to Device Information Service. */
+#define HW_REV            STRINGIFY(MAJOR_PRODUCT_NUMBER) "." STRINGIFY(MINOR_PRODUCT_NUMBER) "." STRINGIFY(MAJOR_VERSION_NUMBER) "." STRINGIFY(MINOR_VERSION_NUMBER)
+#define FW_REV            "0.1.0"
+#define SER_NUM           "0000-00-00-00001"
+#define MODULE_NAME       ELITE_DEVICE_NAME
 
 static void le_dis_init(void)
 {
@@ -53,4 +53,7 @@ static void le_dis_init(void)
 void le_srv_init(void)
 {
     le_dis_init();
+
+    extern void le_eis_init(void);
+    le_eis_init();
 }