I have three 24v nominal LFP batteries.
Can I use Python3 code to access each over BLE ?
First, "SP10S009-L8S-100A-B-U" A4:C1:37:10:00:D2
Second, "BR2262e-s" 04:7F:0E:00:1A:7C
Third. "????" xx:xx (daly BMS)
Starting with with First do I write to characteristic 0xFF01 of service 0xFF00 ?
./gatt-python could discover but not connect to "B" or "S"
pi@sionnach:~/gatt-python $ python3 ./discover.py
Discovered [41:3c:6e:a0:75:f1] 41-3C-6E-A0-75-F1
Discovered [40:00:59:aa:b7:e0] 40-00-59-AA-B7-E0
Discovered [a4:c1:37:10:00:d2] SP10S009-L8S-100A-B-U
Discovered [a4:c1:37:10:00:d2] SP10S009-L8S-100A-B-U
Discovered [04:7f:0e:00:1a:7c] BR2262e-s
Discovered [a4:c1:37:10:00:d2] SP10S009-L8S-100A-B-U
Discovered [a4:c1:37:10:00:d2] SP10S009-L8S-100A-B-U
pi@sionnach:~/gatt-python $
pi@sionnach:~/gatt-python $ python3 ./connects_S.py
[a4:c1:37:10:00:d2] Connection failed: Device does not exist, check adapter name and MAC address.
(2026_05_bleak) pi@sionnach:~/2026_05_bleak also failed.
2026_05_bleak) pi@sionnach:~/2026_05_bleak $ nano scanner_S.py
(2026_05_bleak) pi@sionnach:~/2026_05_bleak $
(2026_05_bleak) pi@sionnach:~/2026_05_bleak $ python3 ./scanner_S.py
Traceback (most recent call last):
File "/home/pi/2026_05_bleak/./scanner_S.py", line 37, in <module>
asyncio.run(main(address))
File "/usr/lib/python3.11/asyncio/runners.py", line 190, in run
return runner.run(main)
^^^^^^^^^^^^^^^^
File "/usr/lib/python3.11/asyncio/runners.py", line 118, in run
return self._loop.run_until_complete(task)
This directory was also no good...
(24v_battery) pi@sionnach:~/24v_battery/bin $ ./gattctl
Module 'dbus' not found
Please run: sudo apt-get install python3-dbus
See also: https://github.com/getsenic/gatt-python#installing-gatt-sdk-for-python
(24v_battery) pi@sionnach:~/24v_battery/bin $
(24v_battery) pi@sionnach:~/jbdtool/build $
(24v_battery) pi@sionnach:~/jbdtool/build $ ls ..
battery.h build.h changelog dsfuncs.h jbd_info.c list.h module.h pack.h README.md utils.h
bt.c can.c config.h ip.c jbd_info.h main.c mqtt.c parson.c serial.c uuid.h
buffer.h cfg.c daemon.c jbd.c LICENSE Makefile mqtt.h parson.h si.h worker.h
build cfg.h debug.h jbd.h list.c module.c mybmm.h r utils.c
(24v_battery) pi@sionnach:~/jbdtool/build $
Also no good
Also no good
(JBD_BMS_BTLE) pi@sionnach:~/JBD_BMS_BTLE $ cd ..
Didn't try aiobmsble as it looks incomplete as no runnable .py script!
Didn't try ANT_BMS as it uses serial port
smart_bms also failed..
docs dumb_test.py examples LICENSE.txt README.md requirements.txt smart_bms test.py
pi@sionnach:~/smart_bms $ vim test.py
pi@sionnach:~/smart_bms $ python3 ./test.py
('A4:C1:37:10:00:D2', 'SP10S009-L8S-100A-B-U', 'Jikong')
WALSH: Running bluetootchctl command <disconnect A4:C1:37:10:00:D2>
WALSH: Running bluetootchctl command <power on>
Traceback (most recent call last):
File "/usr/lib/python3.11/asyncio/tasks.py", line 490, in wait_for
return fut.result()
^^^^^^^^^^^^
File "/home/pi/smart_bms/smart_bms/TransportBLE.py", line 70, in _read_inner
data = [await self._read_queue.get()]
pi@sionnach:~/solar-bt-monitor $ nano solar-bt-monitor.ini
pi@sionnach:~/solar-bt-monitor $ nano solar-bt-monitor.ini.B
pi@sionnach:~/solar-bt-monitor $
pi@sionnach:~/solar-bt-monitor $ python3 ./solar-bt-monitor.py
DEBUG: [CONFIG] mac_addr: A4:C1:37:10:00:D2
DEBUG: [CONFIG] alias: SP10S009-L8S-100A-B-U
DEBUG: [CONFIG] adapter: hci0
DEBUG: [CONFIG] reconnect: True
DEBUG: [CONFIG] continuous_monitor: True
DEBUG: [CONFIG] data_read_interval: 30
DEBUG: [CONFIG] logger_type: prometheus
INFO: Starting Prometheus Server
INFO: Adapter status - Powered: True
INFO: Starting discovery...
INFO: Devices found: 5
INFO: Found bt1 device SP10S009-L8S-100A-B-U [A4:C1:37:10:00:D2]
INFO: Found bt1 device SP10S009-L8S-100A-B-U [a4:c1:37:10:00:d2]
DEBUG: Found. So connecting...
DEBUG: _connect() run manager...
INFO: [a4:c1:37:10:00:d2] Discovered, alias = SP10S009-L8S-100A-B-U
INFO: [A4:C1:37:10:00:D2] Connected
INFO: [a4:c1:37:10:00:d2] Discovered, alias = SP10S009-L8S-100A-B-U
INFO: [A4:C1:37:10:00:D2] Resolved services
DEBUG: resolved services
DEBUG: request_data...
DEBUG: create_read_request 256 => [255, 3, 1, 0, 0, 34, 209, 241]
ERROR: Exception in handler for D-Bus signal:
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/dbus/connection.py", line 218, in maybe_handle_message
self._handler(*args, **kwargs)
File "/home/pi/.local/lib/python3.11/site-packages/gatt/gatt_linux.py", line 398, in properties_changed
self.services_resolved()
File "/home/pi/solar-bt-monitor/SolarDevice.py", line 63, in services_resolved
self.resolved_callback()
File "/home/pi/solar-bt-monitor/BTOneApp.py", line 95, in on_resolved
self.request_data()
File "/home/pi/solar-bt-monitor/BTOneApp.py", line 91, in request_data
self.device.characteristic_write_value(request)
File "/home/pi/solar-bt-monitor/SolarDevice.py", line 79, in characteristic_write_value
self.write_characteristic.write_value(value)
^^^^^^^^^^^^^^^^^^^^^^^^^
AttributeError: 'SolarDevice' object has no attribute 'write_characteristic'
INFO: [a4:c1:37:10:00:d2] Discovered, alias = SP10S009-L8S-100A-B-U
^CDEBUG: _connect() keyboard exception...
INFO: gracefully_exit
INFO: Exit: Disconnecting device: SP10S009-L8S-100A-B-U [A4:C1:37:10:00:D2]
pi@sionnach:~/solar-bt-monitor $
pi@sionnach:~/solar-bt-monitor $
pi@sionnach:~/solar-bt-monitor $ date
Mon 20 Jul 17:40:23 IST 2026
pi@sionnach:~/solar-bt-monitor $ # Got further may be worth debugging?
pi@sionnach:~/solar-bt-monitor $
pi@sionnach:~/solar-bt-monitor $
Or should I use a wired connection to each BMS ? Scary
What does Android app make of them ?
daly
jbd
xiaoxiang
Hurrah!!!!
(jbd_bms_bleak) (base) coderdojo@rhubarb:~/jbd_bms_bleak$ vim jbd_bms_bleak2.py
(jbd_bms_bleak) (base) coderdojo@rhubarb:~/jbd_bms_bleak$
(jbd_bms_bleak) (base) coderdojo@rhubarb:~/jbd_bms_bleak$
(jbd_bms_bleak) (base) coderdojo@rhubarb:~/jbd_bms_bleak$
(jbd_bms_bleak) (base) coderdojo@rhubarb:~/jbd_bms_bleak$ vim ./jbd_bms_bleak2.py
(jbd_bms_bleak) (base) coderdojo@rhubarb:~/jbd_bms_bleak$
(jbd_bms_bleak) (base) coderdojo@rhubarb:~/jbd_bms_bleak$ python3 ./jbd_bms_bleak2.py
INFO:__main__:Found device: SP10S009-L8S-100A-B-U (A4:C1:37:10:00:D2)
INFO:__main__:Updating BMS data...
INFO:__main__:BMS data: {'voltage': 25.99,
'current': 0.0,
'cycle_charge': 0.14,
'design_capacity': 100,
'cycles': 584,
'balancer': 0,
'problem_code': 4096,
'battery_level': 0,
'chrg_mosfet': True,
'dischrg_mosfet': False,
'temp_sensors': 2,
'temp_values': [TempSensor(22.6,
<T.GENERIC: 0>),
TempSensor(22.7,
<T.GENERIC: 0>)],
'cell_voltages': [3.249,
3.25,
3.247,
3.249,
3.248,
3.248,
3.248,
3.253],
'delta_voltage': 0.006,
'cell_count': 8,
'cycle_capacity': 3.639,
'power': 0.0,
'battery_charging': False,
'temperature': 22.65,
'problem': True}
(jbd_bms_bleak) (base) coderdojo@rhubarb:~/jbd_bms_bleak$ date
Mon 20 Jul 2026 19:16:20 IST
(jbd_bms_bleak) (base) coderdojo@rhubarb:~/jbd_bms_bleak$
Now lets try that on a Raspberry Pi!
Pythoin version only 3.11 needs to be at least 3.12
(jbd_bms_bleak) (base) coderdojo@rhubarb:~/jbd_bms_bleak$
(jbd_bms_bleak) (base) coderdojo@rhubarb:~/jbd_bms_bleak$ python3 ./jbd_S_bms_bleak.py
INFO:__main__:Found device: SP10S009-L8S-100A-B-U (A4:C1:37:10:00:D2)
INFO:__main__:Updating BMS data...
INFO:__main__:BMS data: {'voltage': 25.99,
'current': 0.0,
'cycle_charge': 0.14,
'design_capacity': 100,
'cycles': 584,
'balancer': 0,
'problem_code': 4096,
'battery_level': 0,
'chrg_mosfet': True,
'dischrg_mosfet': False,
'temp_sensors': 2,
'temp_values': [TempSensor(22.6,
<T.GENERIC: 0>),
TempSensor(22.7,
<T.GENERIC: 0>)],
'cell_voltages': [3.249,
3.25,
3.247,
3.249,
3.248,
3.248,
3.248,
3.253],
'delta_voltage': 0.006,
'cell_count': 8,
'cycle_capacity': 3.639,
'power': 0.0,
'battery_charging': False,
'temperature': 22.65,
'problem': True}
(jbd_bms_bleak) (base) coderdojo@rhubarb:~/jbd_bms_bleak$
(jbd_bms_bleak) (base) coderdojo@rhubarb:~/jbd_bms_bleak$ nano jbd_B_bms_bleak.py
(jbd_bms_bleak) (base) coderdojo@rhubarb:~/jbd_bms_bleak$
(jbd_bms_bleak) (base) coderdojo@rhubarb:~/jbd_bms_bleak$ vim jbd_B_bms_bleak.py
(jbd_bms_bleak) (base) coderdojo@rhubarb:~/jbd_bms_bleak$
(jbd_bms_bleak) (base) coderdojo@rhubarb:~/jbd_bms_bleak$ python3 ./jbd_B_bms_bleak.py
ERROR:root:Device 'BR2262e-s' not found.
(jbd_bms_bleak) (base) coderdojo@rhubarb:~/jbd_bms_bleak$ date
Mon 20 Jul 2026 19:27:29 IST
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