question

These days only install Lithium Phosphate batteries

you only ruffly need 1/2 the number of batteries as you can discharge these by 90% without damage (in comparison fo LAs) and there cycle life is way way more.

cost wise when you take into account only 1/2 the qty is needed for the SAME usable stored power they are usually cheaper

and thats if you cycle the LAs you currently have to 50% SOC if you are gental with your LAs and only go down by 20% SOC - then you really only need 1/4 the number /size of LiFePo4 Batteries

Myself I would never use LA style of batteries in a OFF GRID system these days

do the sums and your research on battery types The Quattro is compatible with the LiFePo4 batteries.

There are SO many other advantages of LiFePo4

There recharge time discharge and power allowed, there are just massive differences

IE here is just one

discharging any Lead Acid Battery by say 100A/Hrs then you have to add back 125 A/Hs to refill it and that usually take min 4hrs

With LiFePo4 you take 100 A/H out and only have to put back 105 A/H this can be done in 30min or less depending on charger and bank size

thats a 20% savings or 20% more solar you get all for free - Let alone generator run time considerations if applicable

I would also say to look into LiFePO4.

But first do some research about them, so that you better understand what would you need (in terms of capacity, manufacturer, etc.) and what the limitations are.

Also, if the existing batteries are still providing the required energy, normally I would say to wait with the replacement. But now that all the money printers go brrrr, it might be more prudent to not wait much longer.