Batmon not connecting to JK inverter BMS

[Simon-Kasper]

Thanks for creating this addition to HA! It seems like a very neat way to monitor my batteries closer!

The last days I have been trying to get Batmon to work with my two JK inverter BMS (JK_PB1A16S10P) batteries with very mixed results.

In fact I started trying Batmon about half a year ago, also with mixed results. Back then I bought an external bluetooth dongle with better range but this did not solve it. After that I let it rest for a while.

Recently, after setting the BMS type to jk_32s it was detecting the first BMS quite well for a day or so (Pack A) but not the second one (Pack B). I thought this was due to range issues so I bought a USB extension cable to be able to put the bluetooth antenna right on top of the battery packs. Now nothing works anymore... The log keeps showing errors. I can connect to both BMS just fine with the JK phone app, also from multiple metres away and through walls.

I would greatly appreciate if somebody could take a look at the below data and maybe give me some pointers? I am having trouble understanding where things go wrong at this stage. Do I need to buy a different external bluetooth dongle? Is the config wrong? Some fault in the software / bleak? I would be glad to provide more data on request.

What i've done / tried:

• external bluetooth antenna added
• disabled the internal antenna
• USB extension to put the antenna on top of the batteries
• tried using either "jk" or "jk_32s" as the bms type
• tried "keep-alive" and "concurrent sampling" on or off
• tried power cycling the bluetooth adapter
• tried different sample periods (currently at 30s)
• I've restarted HA multiple times
• rebuild batmon add-on and stop/start
• re-install the batmon add-on
• I'm at the latest batmon and HA OS and Core versions (I'm running HA standalone on a raspberry Pi).
• The scan does show the bluetooth id for both BMSes so bluetooth seems to work.

My config:

• address: C8:47:80:-censored-
  type: jk
  alias: ESS Pack A
  adapter: hci1
• address: C8:47:80:-censored-
  type: jk
  alias: ESS Pack B
  adapter: hci1

Logfile:

10:09:36 INFO [main] Started in pair-only mode (bleak 0.20.2)
10:09:36 INFO [main] No PSK, nothing to pair
10:09:36 INFO [main] exit signal handler... (), {}, shutdown was False
10:09:36 INFO [bt] BT Discovery:
10:09:41 INFO [bt] BT 5A:CB:E5:CC:A7:45 5A-CB-E5-CC-A7-45
10:09:41 INFO [bt] BT 68:C8:72:91:D7:06 68-C8-72-91-D7-06
10:09:41 INFO [bt] BT C8:47:80:07:A7:7E BMS Pack A-00
10:09:41 INFO [bt] BT 5E:18:55:91:19:CD 5E-18-55-91-19-CD
10:09:41 INFO [bt] BT 6D:E1:FB:70:C7:C0 6D-E1-FB-70-C7-C0
10:09:41 INFO [bt] BT C8:47:80:07:A7:81 BMS Pack B-01
10:09:41 INFO [bt] BT D0:4F:7E:25:1A:14 D0-4F-7E-25-1A-14
10:09:41 INFO [bt] BT FA:01:33:EE:EB:AF SmartShunt HQ23036DDZU
10:09:41 INFO [bt] BT 54:76:D7:D5:2B:F2 54-76-D7-D5-2B-F2
10:09:41 INFO [bt] BT 34:29:8F:66:05:77 34-29-8F-66-05-77
10:09:41 INFO [bt] BT 43:ED:E2:5F:8E:E4 ESS
10:09:41 INFO [bt] BT E0:34:33:8A:DB:2B E0-34-33-8A-DB-2B
10:09:41 INFO [main] Bleak version 0.20.2, BtBackend version bluez-v5.79
10:09:41 INFO [main] connecting mqtt mqtt-user@core-mosquitto
10:09:42 INFO [main] Fetching 2 BMS + 0 virtual + 0 others serially, period=30.00s, keep_alive=True
10:09:42 INFO [sampling] connecting bms JKBt_32s(C8:47:80:07:A7:7E,ESS Pack A)
10:09:48 INFO [jikong] ESS Pack A normal connect failed (<class 'TimeoutError'>), connecting with scanner
10:10:57 ERROR [sampling] ESS Pack A error (#1): <class 'TimeoutError'>
Traceback (most recent call last):
File "/app/venv/lib/python3.12/site-packages/bleak/backends/bluezdbus/client.py", line 204, in connect
reply = await self._bus.call(
^^^^^^^^^^^^^^^^^^^^^
File "/app/venv/lib/python3.12/site-packages/dbus_fast/aio/message_bus.py", line 390, in call
await future
asyncio.exceptions.CancelledError
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "/app/bmslib/sampling.py", line 155, in call
s = await self._sample_inner()
^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/bmslib/sampling.py", line 229, in _sample_inner
async with bms:
^^^
File "/app/bmslib/bt.py", line 348, in aenter
await self.connect()
File "/app/bmslib/models/jikong.py", line 132, in connect
await self._connect_with_scanner(timeout=timeout)
File "/app/bmslib/bt.py", line 276, in _connect_with_scanner
await self._connect_client(timeout=timeout / 2)
File "/app/bmslib/bt.py", line 189, in _connect_client
await asyncio.wait_for(self.client.connect(timeout=timeout), timeout=timeout + 1)
File "/usr/lib/python3.12/asyncio/tasks.py", line 520, in wait_for
return await fut
^^^^^^^^^
File "/app/venv/lib/python3.12/site-packages/bleak/init.py", line 531, in connect
return await self._backend.connect(**kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/venv/lib/python3.12/site-packages/bleak/backends/bluezdbus/client.py", line 141, in connect
async with async_timeout(timeout):
^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.12/asyncio/timeouts.py", line 115, in aexit
raise TimeoutError from exc_val
TimeoutError
10:10:57 INFO [sampling] ESS Pack A bms debug data: {'resp': {}, 'char_w': None, 'char_r': None}
10:10:57 INFO [sampling] Bleak version 0.20.2
10:10:57 INFO [sampling] connecting bms JKBt_32s(C8:47:80:07:A7:81,ESS Pack B)
10:11:04 INFO [jikong] ESS Pack B normal connect failed (<class 'TimeoutError'>), connecting with scanner
10:12:23 ERROR [sampling] ESS Pack B error (#1): <class 'TimeoutError'>
Traceback (most recent call last):
File "/app/venv/lib/python3.12/site-packages/bleak/backends/bluezdbus/client.py", line 204, in connect
reply = await self._bus.call(
^^^^^^^^^^^^^^^^^^^^^
File "/app/venv/lib/python3.12/site-packages/dbus_fast/aio/message_bus.py", line 390, in call
await future
asyncio.exceptions.CancelledError
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "/app/bmslib/sampling.py", line 155, in call
s = await self._sample_inner()
^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/bmslib/sampling.py", line 229, in _sample_inner
async with bms:
^^^
File "/app/bmslib/bt.py", line 348, in aenter
await self.connect()
File "/app/bmslib/models/jikong.py", line 132, in connect
await self._connect_with_scanner(timeout=timeout)
File "/app/bmslib/bt.py", line 276, in _connect_with_scanner
await self._connect_client(timeout=timeout / 2)
File "/app/bmslib/bt.py", line 189, in _connect_client
await asyncio.wait_for(self.client.connect(timeout=timeout), timeout=timeout + 1)
File "/usr/lib/python3.12/asyncio/tasks.py", line 520, in wait_for
return await fut
^^^^^^^^^
File "/app/venv/lib/python3.12/site-packages/bleak/init.py", line 531, in connect
return await self._backend.connect(**kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/venv/lib/python3.12/site-packages/bleak/backends/bluezdbus/client.py", line 141, in connect
async with async_timeout(timeout):
^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.12/asyncio/timeouts.py", line 115, in aexit
raise TimeoutError from exc_val
TimeoutError
10:12:23 INFO [sampling] ESS Pack B bms debug data: {'resp': {}, 'char_w': None, 'char_r': None}
10:12:23 INFO [sampling] Bleak version 0.20.2
10:12:23 INFO [sampling] connecting bms JKBt_32s(C8:47:80:07:A7:7E,ESS Pack A)
10:12:29 INFO [jikong] ESS Pack A normal connect failed (<class 'TimeoutError'>), connecting with scanner
10:13:49 ERROR [sampling] ESS Pack A error (#2): <class 'TimeoutError'>
Traceback (most recent call last):
File "/app/venv/lib/python3.12/site-packages/bleak/backends/bluezdbus/client.py", line 204, in connect
reply = await self._bus.call(
^^^^^^^^^^^^^^^^^^^^^
File "/app/venv/lib/python3.12/site-packages/dbus_fast/aio/message_bus.py", line 390, in call
await future
asyncio.exceptions.CancelledError
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "/app/bmslib/sampling.py", line 155, in call
s = await self._sample_inner()
^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/bmslib/sampling.py", line 229, in _sample_inner
async with bms:
^^^
File "/app/bmslib/bt.py", line 348, in aenter
await self.connect()
File "/app/bmslib/models/jikong.py", line 132, in connect
await self._connect_with_scanner(timeout=timeout)
File "/app/bmslib/bt.py", line 276, in _connect_with_scanner
await self._connect_client(timeout=timeout / 2)
File "/app/bmslib/bt.py", line 189, in _connect_client
await asyncio.wait_for(self.client.connect(timeout=timeout), timeout=timeout + 1)
File "/usr/lib/python3.12/asyncio/tasks.py", line 520, in wait_for
return await fut
^^^^^^^^^
File "/app/venv/lib/python3.12/site-packages/bleak/init.py", line 531, in connect
return await self._backend.connect(**kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/app/venv/lib/python3.12/site-packages/bleak/backends/bluezdbus/client.py", line 141, in connect
async with async_timeout(timeout):
^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.12/asyncio/timeouts.py", line 115, in aexit
raise TimeoutError from exc_val
TimeoutError
10:13:49 INFO [sampling] ESS Pack A bms debug data: {'resp': {}, 'char_w': None, 'char_r': None}
10:13:49 INFO [sampling] Bleak version 0.20.2
10:13:49 INFO [sampling] connecting bms JKBt_32s(C8:47:80:07:A7:81,ESS Pack B)
10:13:55 INFO [jikong] ESS Pack B normal connect failed (<class 'TimeoutError'>), connecting with scanner