Index: dialin/common/msg_ids.py
===================================================================
diff -u -r59b592b33c4d5e1105ea0bbd5131ac32d02a605d -rb898f008bf4387896c57e94c3296d7e5c3ca95e2
--- dialin/common/msg_ids.py	(.../msg_ids.py)	(revision 59b592b33c4d5e1105ea0bbd5131ac32d02a605d)
+++ dialin/common/msg_ids.py	(.../msg_ids.py)	(revision b898f008bf4387896c57e94c3296d7e5c3ca95e2)
@@ -362,6 +362,9 @@
     MSG_ID_HD_NV_RECORD_CRC_OVERRIDE = 0x8089
     MSD_ID_HD_RTC_CTL_REG1_STATUS_OVERRIDE = 0x808A
     MSD_ID_HD_RTC_CTL_REG3_STATUS_OVERRIDE = 0x808B
+    MSG_ID_HD_BATTERY_STATUS_OVERRIDE = 0x808C
+    MSG_ID_HD_BATTERY_CHARGER_STATUS_OVERRIDE = 0x808D
+    MSG_ID_HD_BATTERY_COMM_STATUS_OVERRIDE = 0x808E
 
     MSG_ID_DG_TESTER_LOGIN_REQUEST = 0xA000
     MSG_ID_DG_ALARM_STATE_OVERRIDE = 0xA001
Index: dialin/hd/battery.py
===================================================================
diff -u -r4666aae711079c97edd9d1e23c3e06f2cc47b7bf -rb898f008bf4387896c57e94c3296d7e5c3ca95e2
--- dialin/hd/battery.py	(.../battery.py)	(revision 4666aae711079c97edd9d1e23c3e06f2cc47b7bf)
+++ dialin/hd/battery.py	(.../battery.py)	(revision b898f008bf4387896c57e94c3296d7e5c3ca95e2)
@@ -266,3 +266,127 @@
             self.logger.debug("Timeout!!!!")
             return False
 
+    def cmd_battery_status_override(self, status: int, reset: int = NO_RESET) -> int:
+        """
+        Constructs and sends the battery remaining capacity (in mWh) override \n
+        command.
+        BATTERY_PACK_ERROR_BITS = 0x000F
+        Constraints:
+            Must be logged into HD.
+
+        @param status:  int - the battery comm status as a bit map.
+
+        @param reset:  integer - 1 to reset a previous override, 0 to override
+        @return: 1 if successful, zero otherwise
+        """
+
+        rst = integer_to_bytearray(reset)
+        sts = integer_to_bytearray(status)
+        payload = rst + sts
+
+        message = DenaliMessage.build_message(channel_id=DenaliChannels.dialin_to_hd_ch_id,
+                                              message_id=MsgIds.MSG_ID_HD_BATTERY_STATUS_OVERRIDE.value,
+                                              payload=payload)
+
+        self.logger.debug("override HD battery status")
+
+        # Send message
+        received_message = self.can_interface.send(message)
+
+        # If there is content...
+        if received_message is not None:
+            # self.logger.debug(received_message)
+            if reset == RESET:
+                str_res = "reset back to normal"
+            else:
+                str_res = str(sts)
+            self.logger.debug("HD battery status overridden to " + str_res + " " +
+                              str(received_message['message'][DenaliMessage.PAYLOAD_START_INDEX]))
+            # response payload is OK or not OK
+            return received_message['message'][DenaliMessage.PAYLOAD_START_INDEX]
+        else:
+            self.logger.debug("Timeout!!!!")
+            return False
+
+    def cmd_battery_charger_status_override(self, status: int, reset: int = NO_RESET) -> int:
+        """
+        Constructs and sends the battery charger status override command.
+        Setting BATTERY_CHARGER_STATUS_AC_PRESENT_MASK to 0 causes the HD to assume battery power.
+        Constraints:
+            Must be logged into HD.
+
+        @param status:  int - the bit map for the charger status register.
+        BATTERY_CHARGER_STATUS_AC_PRESENT_MASK = 0x8000
+        @param reset:  integer - 1 to reset a previous override, 0 to override
+        @return: 1 if successful, zero otherwise
+        """
+
+        rst = integer_to_bytearray(reset)
+        sts = integer_to_bytearray(status)
+        payload = rst + sts
+
+        message = DenaliMessage.build_message(channel_id=DenaliChannels.dialin_to_hd_ch_id,
+                                              message_id=MsgIds.MSG_ID_HD_BATTERY_CHARGER_STATUS_OVERRIDE.value,
+                                              payload=payload)
+
+        self.logger.debug("override HD battery charger status.")
+
+        # Send message
+        received_message = self.can_interface.send(message)
+
+        # If there is content...
+        if received_message is not None:
+            # self.logger.debug(received_message)
+            if reset == RESET:
+                str_res = "reset back to normal"
+            else:
+                str_res = str(sts)
+            self.logger.debug("HD battery charger status overridden to " + str_res + " " +
+                              str(received_message['message'][DenaliMessage.PAYLOAD_START_INDEX]))
+            # response payload is OK or not OK
+            return received_message['message'][DenaliMessage.PAYLOAD_START_INDEX]
+        else:
+            self.logger.debug("Timeout!!!!")
+            return False
+
+    def cmd_battery_comm_status_override(self, status: int, reset: int = NO_RESET) -> int:
+        """
+        Constructs and sends the battery comm status override command. \n
+        This overrides the I2C status register. \n
+        Constraints:
+            Must be logged into HD.
+
+        @param status:  int - the bit map for the i2c status register.
+            I2C_AL         = 0x0001,  /* arbitration lost          */
+            I2C_NACK       = 0x0002,  /* no acknowledgement        */
+        @param reset:  integer - 1 to reset a previous override, 0 to override
+        @return: 1 if successful, zero otherwise
+        """
+
+        rst = integer_to_bytearray(reset)
+        sts = integer_to_bytearray(status)
+        payload = rst + sts
+
+        message = DenaliMessage.build_message(channel_id=DenaliChannels.dialin_to_hd_ch_id,
+                                              message_id=MsgIds.MSG_ID_HD_BATTERY_COMM_STATUS_OVERRIDE.value,
+                                              payload=payload)
+
+        self.logger.debug("override HD battery comm status.")
+
+        # Send message
+        received_message = self.can_interface.send(message)
+
+        # If there is content...
+        if received_message is not None:
+            # self.logger.debug(received_message)
+            if reset == RESET:
+                str_res = "reset back to normal"
+            else:
+                str_res = str(sts)
+            self.logger.debug("HD battery comm status overridden to " + str_res + " " +
+                              str(received_message['message'][DenaliMessage.PAYLOAD_START_INDEX]))
+            # response payload is OK or not OK
+            return received_message['message'][DenaliMessage.PAYLOAD_START_INDEX]
+        else:
+            self.logger.debug("Timeout!!!!")
+            return False
\ No newline at end of file