Sorry for a dumb question but I have two relatively identical 4 cell 280 ah LiFePo4 batteries each with its own BMS. I want to run them in series for a 24 volt system. How do I connect the two batteries together with separate BMSes. Do I connect both primary leads on the first BMS to battery terminals? If the correct answer is get an 8s BMS I am OK with that but would like to run them together in the interim. The BMSes are undersized anyway so I think I will have to replace them regardless. But I am hoping there is a simple solution so I can gradually build up my battery solution as my overall system grows.