I forgot. The 25.4v when the sun goes down, is with the 288L full size fridge/freezer, Mac mini, and 4,000w inverter
on. When not under a load when the sun sets. The bank is between 25.6v to a max of 25.9v.
It took about 6 months for the batteries
to break in and start to work together and maintain a constant charge and discharge voltage.
According to my battery monitor
. I have had 11 cycles in 1 year, and 0 full discharges. Typhoon season and the lack of sunshine is to blame LOL. We are really power conscious when the sky's are grey !!
I am planning my first equalise of the batteries with the Morningstar in June. That will be 14 months since the bank and controller went online. US Battery distributor here recommended that. They warranty the batteries, so I Obey LOL.
Morningstar and US batteries seem to work well for us.
The batteries never seem to get hotter then 30C in the hottest summer day, and never below 12C on the coldest day here.
Good luck !