TC reported battery charge loss. Staff(BSH) checked and confirmed battery charge loss at Rear M1. ~~~~~ TC reported battery charge loss. Staff(BSH) checked and confirmed battery charge loss at Rear M1(1611). N  1611 FC427, 426. Check battery voltage  - ok. Battery no sign of abnormalities, fuse - ok. Battery temp sensor measure 7.1k Ohm, check external temp sensor wire    continuity - ok (6784 - to connector, 6785 to connector - 0.3 ohm). check BLVR1,2,3,4 no sign of burn mark. Battery charge volatge 110vDC present. Swap APS controller 1611/2611 for monitoring. Preventive C/O battery bank suspect temp sensor intermittently faulty; check battery voltage and temp - ok. monitor ok. 1611 > 2611 S/N: 306RC000-3H 2611 > 1611 S/N: 350RY905-1H 1611 Battery Bank Old: KSFB-2016-161 New: KSFB-2016-103 Notif: 2568032 Done by: Saini, Asruddin, Zulq. 04/02/2024.