TC reported battery charge loss fault indication lighted up. TC feedback train performance - OK. ~~~~~ 609/610 found stray voltage on Line 53 relating to battery indication. Further check & found origin of stray voltage from 2610 CN12 connector to APS box. Removed & cleaned connector pins on CN12 connector. Checked & found stray voltage from Line 53 is cleared. Normalised connectors & heat shrink on CN12. Confirmed no stray voltage on Line 53 & no 'BATTERY CHARGE LOSS' indication.  Selvan/Jefferson. 05/02/2020.