That's if the controller can handle over 200VDC, which it will not. Absolute max for the 144V X1 controller they use on the Netgain is about 180VDC.Thanks again for the prompt replies. Admittedly I'm in a bit over my head so I appreciate the constructive feedback. I will work on a simple drawing tonight that lays out what I'm attempting to do and how I have it planned in my head.
To comment on your last topic about the controller needing to handle 200V+ : https://www.evwest.com/catalog/product_info.php?products_id=482&osCsid=0td1go2hqvsm45hr94ue5t33c0 This is what I was planning to purchase. I may be mistaken but I was under the impression the controller could see more volts than it's rated for but not use them all. This way I could feed 200v+ to the controller but it would only output the 180v the motor can use.
I was also told by the owner of HPEVS that motors don't "see" voltage, only amperage and that's regulated by the controller...so the controller feeds amps to the motor and the motor is then being "run at a specific voltage".
Is this accurate?
See if the place you got the batteries will take them back, unused. It sounds like you may still be far off from needing batteries and it may not be a great design voltage for 2 of those modules in series, 3 strings.
The LG modules have cell voltage taps and temp sensor taps you can use, you don't need to take them apart to attach a BMS. It seems like you may not fully understand what a BMS is, and how it works and how it is connected. Take a look at Zeva BMS manuals or Orion BMS manuals to see how they do it.
You needed to do way more research before you started purchasing items. You're not in over your head, you just haven't gotten your "design" to a point you were ready to purchase. It needs refinement.