diff --git a/bluetti_mqtt/bluetooth/__init__.py b/bluetti_mqtt/bluetooth/__init__.py
index 5d5bea8..cd5e3ce 100644
--- a/bluetti_mqtt/bluetooth/__init__.py
+++ b/bluetti_mqtt/bluetooth/__init__.py
@@ -3,13 +3,13 @@
 from typing import Set
 from bleak import BleakScanner
 from bleak.backends.device import BLEDevice
-from bluetti_mqtt.core import BluettiDevice, AC200M, AC300, AC500, AC60, EP500, EP500P, EP600, EB3A
+from bluetti_mqtt.core import BluettiDevice, AC200M, AC300, AC500, AC60, EP500, EP500P, EP600, EB3A, AC200L
 from .client import BluetoothClient
 from .exc import BadConnectionError, ModbusError, ParseError
 from .manager import MultiDeviceManager
 
 
-DEVICE_NAME_RE = re.compile(r'^(AC200M|AC300|AC500|AC60|EP500P|EP500|EP600|EB3A)(\d+)$')
+DEVICE_NAME_RE = re.compile(r'^(AC200M|AC300|AC500|AC60|EP500P|EP500|EP600|EB3A|AC200L)(\d+)$')
 
 
 async def scan_devices():
@@ -27,6 +27,8 @@ def build_device(address: str, name: str):
     match = DEVICE_NAME_RE.match(name)
     if match[1] == 'AC200M':
         return AC200M(address, match[2])
+    if match[1] == 'AC200L':
+        return AC200L(address, match[2])
     if match[1] == 'AC300':
         return AC300(address, match[2])
     if match[1] == 'AC500':
diff --git a/bluetti_mqtt/core/__init__.py b/bluetti_mqtt/core/__init__.py
index 2d16d41..a4e3e60 100644
--- a/bluetti_mqtt/core/__init__.py
+++ b/bluetti_mqtt/core/__init__.py
@@ -7,6 +7,7 @@
 from .devices.ep500p import EP500P
 from .devices.ep600 import EP600
 from .devices.eb3a import EB3A
+from .devices.ac200l import AC200L
 from .commands import (
     DeviceCommand,
     ReadHoldingRegisters,
diff --git a/bluetti_mqtt/core/devices/ac200l.py b/bluetti_mqtt/core/devices/ac200l.py
new file mode 100644
index 0000000..3fc4f9a
--- /dev/null
+++ b/bluetti_mqtt/core/devices/ac200l.py
@@ -0,0 +1,111 @@
+from enum import Enum, unique
+from typing import List
+from ..commands import ReadHoldingRegisters
+from .bluetti_device import BluettiDevice
+from .struct import DeviceStruct
+
+
+@unique
+class OutputMode(Enum):
+    STOP = 0
+    INVERTER_OUTPUT = 1
+    BYPASS_OUTPUT_C = 2
+    BYPASS_OUTPUT_D = 3
+    LOAD_MATCHING = 4
+
+
+@unique
+class AutoSleepMode(Enum):
+    THIRTY_SECONDS = 2
+    ONE_MINUTE = 3
+    FIVE_MINUTES = 4
+    NEVER = 5
+
+
+@unique
+class EcoShutdown(Enum):
+    ONE_HOUR = 1
+    TWO_HOURS = 2
+    THREE_HOURS = 3
+    FOUR_HOURS = 4
+
+
+class AC200L(BluettiDevice):
+    def __init__(self, address: str, sn: str):
+        self.struct = DeviceStruct()
+
+        # # Core
+        self.struct.add_string_field('device_type', 10, 6)
+        self.struct.add_sn_field('serial_number', 17)
+        self.struct.add_version_field('arm_version', 23)
+        self.struct.add_version_field('dsp_version', 25)
+        self.struct.add_uint_field('dc_input_power', 36)
+        self.struct.add_uint_field('ac_input_power', 37)
+        self.struct.add_uint_field('ac_output_power', 38)
+        self.struct.add_uint_field('dc_output_power', 39)
+        self.struct.add_decimal_field('power_generation', 41, 1)  # Total power generated since last reset (kwh)
+        self.struct.add_uint_field('total_battery_percent', 43)
+        self.struct.add_bool_field('ac_output_on', 48)
+        self.struct.add_bool_field('dc_output_on', 49)
+
+        # # Details
+        self.struct.add_enum_field('ac_output_mode', 70, OutputMode)
+        self.struct.add_uint_field('internal_ac_voltage', 71)
+        self.struct.add_decimal_field('internal_current_one', 72, 1)
+        self.struct.add_uint_field('internal_power_one', 73)
+        self.struct.add_decimal_field('internal_ac_frequency', 74, 1)
+        self.struct.add_uint_field('internal_dc_input_voltage', 86)
+        self.struct.add_decimal_field('internal_dc_input_power', 87, 1)
+        self.struct.add_decimal_field('internal_dc_input_current', 88, 2)
+
+        # # Battery Data
+        self.struct.add_uint_field('pack_num_max', 91)
+        self.struct.add_decimal_field('total_battery_voltage', 92, 2)
+        self.struct.add_uint_field('pack_num', 96)
+        self.struct.add_decimal_field('pack_voltage', 98, 2)  # Full pack voltage
+        self.struct.add_uint_field('pack_battery_percent', 99)
+        self.struct.add_decimal_array_field('cell_voltages', 105, 16, 2)
+
+        # # Controls
+        self.struct.add_uint_field('pack_num', 3006)
+        self.struct.add_bool_field('ac_output_on', 3007)
+        self.struct.add_bool_field('dc_output_on', 3008)
+        # 3031-3033 is the current device time & date without a timezone
+        self.struct.add_bool_field('power_off', 3060)
+        self.struct.add_enum_field('auto_sleep_mode', 3061, AutoSleepMode)
+        self.struct.add_bool_field('eco_on', 3063)
+        self.struct.add_enum_field('eco_shutdown', 3064, EcoShutdown)
+
+        super().__init__(address, 'AC200L', sn)
+
+    @property
+    def pack_num_max(self):
+        return 3
+
+    @property
+    def polling_commands(self) -> List[ReadHoldingRegisters]:
+        return [
+            ReadHoldingRegisters(10, 40),
+            ReadHoldingRegisters(70, 21),
+            ReadHoldingRegisters(3001, 64),
+        ]
+
+    @property
+    def pack_polling_commands(self) -> List[ReadHoldingRegisters]:
+        return [ReadHoldingRegisters(91, 37)]
+
+    @property
+    def logging_commands(self) -> List[ReadHoldingRegisters]:
+        return [
+            ReadHoldingRegisters(0, 70),
+            ReadHoldingRegisters(70, 21),
+            ReadHoldingRegisters(3001, 61),
+        ]
+
+    @property
+    def pack_logging_commands(self) -> List[ReadHoldingRegisters]:
+        return [ReadHoldingRegisters(91, 119)]
+
+    @property
+    def writable_ranges(self) -> List[range]:
+        return [range(3000, 3065)]
diff --git a/bluetti_mqtt/mqtt_client.py b/bluetti_mqtt/mqtt_client.py
index dd62c4c..03936f5 100644
--- a/bluetti_mqtt/mqtt_client.py
+++ b/bluetti_mqtt/mqtt_client.py
@@ -28,7 +28,7 @@ class MqttFieldConfig:
     id_override: Optional[str] = None  # Used to override Home Assistant field id
 
 
-COMMAND_TOPIC_RE = re.compile(r'^bluetti/command/(\w+)-(\d+)/([a-z_]+)$')
+COMMAND_TOPIC_RE = re.compile(r'bluetti/command/(\w+)-(\d+)/([a-z_]+)$')
 NORMAL_DEVICE_FIELDS = {
     'dc_input_power': MqttFieldConfig(
         type=MqttFieldType.NUMERIC,
@@ -494,6 +494,7 @@ def __init__(
         bus: EventBus,
         hostname: str,
         home_assistant_mode: str,
+        topic: str,
         port: int = 1883,
         username: Optional[str] = None,
         password: Optional[str] = None,
@@ -504,6 +505,7 @@ def __init__(
         self.username = username
         self.password = password
         self.home_assistant_mode = home_assistant_mode
+        self.topic = "custom-data" if topic == None else topic
         self.devices = []
 
     async def run(self):
@@ -535,8 +537,8 @@ async def handle_message(self, msg: ParserMessage):
         await self.message_queue.put(msg)
 
     async def _handle_commands(self, client: Client):
-        async with client.filtered_messages('bluetti/command/#') as messages:
-            await client.subscribe('bluetti/command/#')
+        async with client.filtered_messages(f'{self.topic}/bluetti/command/#') as messages:
+            await client.subscribe(f'{self.topic}/bluetti/command/#')
             async for mqtt_message in messages:
                 await self._handle_command(mqtt_message)
 
@@ -558,8 +560,10 @@ async def _init_device(self, device: BluettiDevice, client: Client):
 
         def payload(id: str, device: BluettiDevice, field: MqttFieldConfig) -> str:
             ha_id = id if not field.id_override else field.id_override
+
+
             payload_dict = {
-                'state_topic': f'bluetti/state/{device.type}-{device.sn}/{id}',
+                'state_topic': f'{self.topic}/bluetti/state/{device.type}-{device.sn}/{id}',
                 'device': {
                     'identifiers': [
                         f'{device.sn}'
@@ -572,7 +576,7 @@ def payload(id: str, device: BluettiDevice, field: MqttFieldConfig) -> str:
                 'object_id': f'{device.type}_{ha_id}',
             }
             if field.setter:
-                payload_dict['command_topic'] = f'bluetti/command/{device.type}-{device.sn}/{id}'
+                payload_dict['command_topic'] = f'{self.topic}/bluetti/command/{device.type}-{device.sn}/{id}'
             payload_dict.update(field.home_assistant_extra)
 
             return json.dumps(payload_dict, separators=(',', ':'))
@@ -632,7 +636,7 @@ def payload(id: str, device: BluettiDevice, field: MqttFieldConfig) -> str:
 
     async def _handle_command(self, mqtt_message: MQTTMessage):
         # Parse the mqtt_message.topic
-        m = COMMAND_TOPIC_RE.match(mqtt_message.topic)
+        m = COMMAND_TOPIC_RE.search(mqtt_message.topic)
         if not m:
             logging.warn(f'unknown command topic: {mqtt_message.topic}')
             return
@@ -670,7 +674,7 @@ async def _handle_command(self, mqtt_message: MQTTMessage):
 
     async def _handle_message(self, client: Client, msg: ParserMessage):
         logging.debug(f'Got a message from {msg.device}: {msg.parsed}')
-        topic_prefix = f'bluetti/state/{msg.device.type}-{msg.device.sn}/'
+        topic_prefix = f'{self.topic}/bluetti/state/{msg.device.type}-{msg.device.sn}/'
 
         # Publish normal fields
         for name, value in msg.parsed.items():
diff --git a/bluetti_mqtt/server_cli.py b/bluetti_mqtt/server_cli.py
index 82b36d1..a7f33e1 100644
--- a/bluetti_mqtt/server_cli.py
+++ b/bluetti_mqtt/server_cli.py
@@ -42,6 +42,10 @@ def execute(self):
             '--password',
             type=str,
             help='The optional MQTT broker password')
+        parser.add_argument(
+            '--topic',
+            type=str,
+            help='The MQTT broker topic - default: custom-data/bluetti/{state,command}/{device})')
         parser.add_argument(
             '--interval',
             default=0,
@@ -107,6 +111,7 @@ async def run(self, args: argparse.Namespace):
             bus=bus,
             hostname=args.hostname,
             home_assistant_mode=args.ha_config,
+            topic=args.topic,
             port=args.port,
             username=args.username,
             password=args.password,
diff --git a/requirements.txt b/requirements.txt
index caac230..ca95cd0 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,5 @@
 asyncio-mqtt==0.12.1
-bleak==0.14.3
+bleak==0.22.2
 crcmod==1.7
 dbus-next==0.2.3
 paho-mqtt==1.6.1