Xantrex SOLAR CHARGE CONTROLLER 30 Owner's Manual page 7

BATTERY DAMAGE
Do not mix battery types. The charge controller can only select one
battery type setting for all batteries connected to its bank. All
connected batteries should either be: Sealed (AGM) or Gel or
Flooded or Lithium-ion iron phosphate.
Failure to follow these instructions can result in equipment
damage.
975-1012-01-01 Rev B
Oct 2019
NOTICE
7