If you have a 2021 LXE, then you have (6) 6v batteries for the house... and (2) 12V batteries for engine starting... Also, if you are looking for a disconnect, depending on which model LXE you have, there is a red rotary switch near the converter/inverter on the passenger side. That is where mine is located. This switch is in addition to the 2 switches by the entry door...
I have a 2020 Discovery LXE 40M.