inverter, charger, battery bank add on for 5th whell

my batteries are rated at 135 amphrs for an 8Hr rate/discharge
that 27 amps discharge per battery times 5 batteries
(new specs are 132 ampHrs)

in other words i can carry 135 amps (5*27) for 8 hours to total discharge

i have never done this, and never want to do this
and have no plans to run the A/C from batteries and inverter

i only post this to inform, there are batteries out there with the rated capabilities
mine are FIAMM 12FLX500

FIAMM 12FLX500

AND YES we use a generator during the day, the batteries and inverter supply our needs at night, residential fridge, tv, pc, fans, even electric blanket on the bed, MW for some bacon or hot danish, or coffee
but A/C is strictly from Generator power

i got mine surplus, new specs are slightly different than the ones listed for my version