UPS battery at U1-2 in N1 rack was also replaced as a hot-swap.
Attachments are the installed date (some of them are pre-installed ones) and the expired date of N1, B1, IX0, A1, A2, and H1 racks.
(Maybe one more UPS is installed in PSL room. But I haven't checked yet.)
Following link is a summary page of serial number of UPS.
JGW-D2213700: APC smart UPS Top View
