I have recently learned about an interesting 24S 200A smart BMS and active cell balancer available for under $200 (US): the JK-B2A24S20P, also sold as the Heltec 1026. Settings can be changed and cell voltage monitored via Bluetooth using an Android or iOS app. Of course, because gen1-2 LEAF modules are 2S2P, an 18-19 module pack would need 36-38S, or two of these BMS boards. At that point, it might be simpler (albeit more expensive) to buy a Vectrix universal BMS for $600+ shipped to the US.
Now's the part where I admit that I don't know very much about BMS hardware and what is compatible with what. Could this setup handle the 130V+ of our pack? I assume the 200A model--the highest available--is what we want because that also aligns with the 200A fuse (upgraded from the stock 125A) that's installed in a lot of our bikes.
The JK BMS is also CAN-capable and has a GPS port on it. The former certainly seems relevant to our usage, but I haven't been able to find much information about how that all works. Perhaps antiscab's Zeva BMS install video can help identify how the JK BMS might integrate with the Vectrix.
Most of the information I've found about this hardware pertains to DIY solar PV systems:
Any thoughts on using these JK BMS units? Worth the effort? I'm awaiting the arrival of the same cheap 20S balancer that israndy bought (~$15 each + shipping from AliExpress) until I can figure out what way to go for BMS. Of course, I wasn't paying attention and forgot to order two of them for my 38S setup...