Add Bluetooth to a 12V LiFePO4 with JBD BMS

[Mof]

I bought some Wulills 12V 300ah LiFePO4 batteries from Aliexpress. They do not have Bluetooth functionality. In communicating with the vendor, they tell me there is a JBD 4s 150A BMS inside. Getting the exact model of the BMS from the vendor is proving difficult. I am considering opening up the plastic case and taking a look at the BMS to determine if I can add a Bluetooth module. I would be looking for a UART connection point, correct? Anybody have any insight/thoughts/guidance?

 

[Mof]

Did some more digging, and thinking this is the 150A BMS they installed. notice the 2.1V threshold to initiate low voltage cut off. Seem quite low.

JBD Normal bms 3S 8S 24S 32S 12V 96V 100A 150A Lithium Battery PCB- Jiabaida BMS

JBD Normal bms 3S 8S 16S 20S 24S 32S 12v 96V 40A 100A 150A Lithium Battery PCB. High quality better service and favorable price with free shipping. Battery Management System for Li-ion Lifepo4 battery

jiabaidabms.com

 

[Mof]

Answering my own question...
JBD-ZP04S006-s

I could not find specifications online. I did find "3.75-2.2v" in a description somewhere. I surmise that it means low-voltage cutoff at 2.2V, and high voltage cutoff at 3.75V.
Anyone have hard evidence? Link to specs?

Thx.