I'm in a conversation on the Electrodacus forum in which I asked opinions on a configuration with an Electrodacus SBMS0 bms and a 2p4s battery pack versus two 4s batteries each with there own JBD 150a bms, both based on 8 280ah EVE cells. Electrodacus replied that paralleling lithium batteries is just wrong; only cells should be paralleled. Yet I see posts on this forum, particularly for RV set ups, where people seem to prefer the two batteries in parallel with there own bms compared to one 2p4s battery? I've seen tradeoffs discussed of both approaches but never a statement like this that it should not be considered at all. So is it OK or not?