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

Flyinghighest

New Member
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

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


Post #9 is key:
 
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