TC reported TIMS indicated APS fault atthe Rear M1 car. ~~~~~ Battery Bank C/O.  1722 battery banks replaced. Monitor battery charging - OK.  Anand/Kamarul/Alan/Sugu 45149 #1722 Battery Bank S/N : OLD : 2016-13 NEW : 2019-014 1722 TC reported TIMS indicated APS fault. CE: 1722 both acs faulty n APS fault. Unable to reset.  1722 FC 408/418. Found #1722 battery compartment battery water leakage. Battery terminals were oxidized. The resistance value of battery temperature sensor out of specs. swapped OPA (battery Charge Control Unit) from #1722 with #2722 as preventive measures. OPS 20 raised to c/o battery bank.  Shafie/Kamarul/Anand/Sugu 45148 OPA Controller S/N : #1722 : 011R4-2H #2722 : 011R4-4H