Doing the numbers & something is NOT RIGHT !
They state that these are LFP cells and LFP like all other chemistries has 2 Voltage Curves.
The "Allowable" range (2.500-3.650 volts per cell) which is the safe voltage range where no harm, damage or deterioration occurs.
The "Working" Range (3.000-3.400) which is the very flat voltage curve that is supposed to deliver the rated Amp Hours of the cells. This is in fact the Voltage Range that companies test & validate the cell capacities to.
Assuming that the cells used are standard LFP the profile below will provide a comfortable moderate charging profile which will maximize your capacity with the least stress.
NOTES: You have 12V Batteries but do not mention if you are using then as 12V/24V/48V.
IF Paralleling the packs, ensure the battery cables are the same length and connected to a proper busbar.
FUSE Each Battery Pack !!! a 100-125A Fuse is sufficient for each one.
If using them in Series to make 24V or 48V then you must be careful on the wiring setup to ensure balanced charging & discharging.
Wire Lengths ARE important, even 1/2" can affect the batteries.
KEEP the battery cables (bat to busbar, busbar to inverter) TOGETHER ! DC wiring creates magnetic fields & electrical noise, keep them close together to manage that.
CHARGING PROFILE:
All equipment MUST BE Voltage Corrected & Calibrated (VERY IMPORTANT)
Divide Values X2 for 12V. Multiply X2 for 48V.
NB: VPC = Volts Per Cell)
Bulk / Absorb: 27.6V (Absorb for 45 minutes (3.45vpc)
(some call this boost)
Equalize: OFF
Float 27.5V (3.437vpc)
MIn Volts: 21.2V (2.650vpc)
Max Volts: 28.6V (3.575vpc)
Rebulk Voltage: 25.6 (3.200vpc)
End Amps/TailCurrent: *1 (Triggers change from Absorb to Float)
(*1): End Amps is calculated: (100AH X 0.05 = 5A or 280AH X 0.05 = 14A.
EndAmps = TailCurrent
Coulumbic Efficiency / Battery Status Meter Efficiency for LFP = 99%.
This gets the bank charged to full with high amps (Constant Current Constant Voltage) and then float (Constant Voltage, Variable Current) tops off so the cells are at 3.437Vpc. I
! Do Not forget to adjust for Voltage Offsets between Actual Voltage @ Battery Terminal & at Solar Controller.
BMS With Active Balancing should be set to start Active Balancing at 3.420V or possibly lower to 3.410 so that the cells can balance out at the top and not affect the charging process.
Very Special NOTE: Floating & Saturating to 3.437vpc, accounts for the Voltage Settling post Charge of any kind which actually brings the cells to just below 3.400Vpc.