Here's the answer

April 26, 2020   photos  

 All batteries serries connected 48volts and 225ah. As a connection diagram, your battery series connections output Voltage is 48 V DC and 900 AH. 24 v as per (6+6+6+6 in series) capacity 450Ah because 24v 225 ah and 24v 225 ah arr in parallel. Series connection, 48 volts 235Ah. Since each set is connected in series and then parallel, it’s 24v, 450Ah.