IR is good but you have to place properly all the miniBMS to be in range. And protect them from moisture and dust otherwise you'll lose connection. Wired solution is better to me. And cheaper.
My miniBMS is around $2 per board including PCB. It has small outline (~ 25x25mm) and extended features
*up to 255 miniBMS in series
*Works as a host
Do you like it? Kits are coming soon
what happened to this bms ?
and how many amps can it shunt?