Thank you Solar Wizard NH - at this point my system (Schneider 2x XW6848, BMS, 2 MPPT60, SCP) seems to be working with it during the daytime with the solar panel providing charge - but then later in evening i get error messages "MPPT DC Over-voltage shutdown", and "DC Over-current nvshutdown"...
Re KiloVault HXL+ 3600 batteries - now that Altestore and KiloVault went into bankruptcy recently- there is no more technical support and warranty by the new owner of Altestoreor or the defunct KiloVault LLC - the "buy one and get two" battery push by Altestore earlier this year should have...