How do you know what BMS is installed in the Battery

[magnet creek]

Strange question maybe. How do you know what make and model of BMS is installed in your LiFePo battery?
I have a couple of "Sunpal" 48V 200ah batteries that I somehow ended up owning (long story). They work well but I have no idea what BMS systems are installed in them. Is there a way to find out?

 

[timselectric]

1. Ask the seller or manufacturer.
2. Find a video of someone opening it up.
3. Open it up, yourself.
4. Maybe someone here has opened one up.
Good luck