I have a 280ah 4s battery built with a 120a BMS - can I connect 1 more 120a BMS to discharge 200 amp?

[Flyinghighest]

Sorry, I don´t know if this has been discussed. KInda new here. I have built a 4s 280ah battery with a 120a JBD smart BMS. It appears I might use in excess of 120a. Can I just add another 120a BMS (both connected to the battery negative), if I program both BMS with the same parameters?
Thanks in advance for any advice.

 

[HRTKD]

There is other threads on this topic. I don't think it's a good idea.

Parallel connection of two BMS for one battery.

Wondering if it is possible to connect two identical BMS in parallel to one battery to handle higher current rate in case one BMS is not suitable(or not enough) to handle the amount of current requested by the system. Did someone tried this? How the cell ballancing will work when two BMS will...

diysolarforum.com

Post #9 is key:

BMS recommendation for 4S 280ah battery

My initial plan was to go with the overkill solar BMS because of its simplicity and low temperature disconnect. However because of my 2000 watt inverter/charger it seems that the overkill solar does not have enough capacity. I considered putting two in parallel but I couldn't find anyone...

diysolarforum.com