Sorry, didn't mean for you to type out your entire system, I was asking expressly about the battery itself. I should have been more clear on that. I plan on building one come spring, so plenty of time to order the parts. What's the difference between the 2 BMSs?
When i changed from Batrium to REC the REC was a better option for CANBUS comms with the Sunny Island which is required for AC coupling. I still use the original Batrium on another 12V system i have.
Armin from LiFeTech lithium is very experienced when it comes to the chemistry and construction of lithium cells. I have only ever worked with one other DIY install using his cells though.
I have mainly worked with Winston / CALB / Sinopoly cells, although in the last few years more people around me are using EVE / CATL etc (ali express specials)
When BYD B-Box first came out i thought it was great - a few years of experience has changed my mind.
I’m waiting now to see the longevity of the EVE style cells. The ones i see need more BMS intervention than the LiFeTech which often go more than a year without triggering the balance mechanism of the BMS. To me that’s not a good sign.