Really looking forward to your tests on the 420Ah batteries. I know that RGIvy has some on order as well. Thanks to both of you for taking the leap.PS: I am trying to find a BMS where the low temp sensor works other than overkill, do you guys know one? I tested Daly and high temp worked great but low temp at 7 Fahrenheit did not work as Will Prowse analyzed in his videos.
PPS: Above mentioned supplier/manufacturer on Alibaba Exliporc New Energy (Shenzhen) Co., Ltd. has around 200 280Ah cells in Chicago now which means a few days US shipping if y'all are interested... talk to Gina, her English is pretty good and she is interested in more fair business.
Overkill and JBD appear to be very similar (as in the same).
I have 2 of the JBD's with bluetooth modules that cost around $75. They work very well. Takes a couple of weeks from Ali and occasionally there is a seller on ebay as well. They have two sensors, one on board the BMS (for high temp), and one wired for low temp. So far they are working great.