Bad batteries or not charging?

[Anonymous user]

Smart UPS SC-1500

UPS Status

- System Status

Device StatusOn Line, Battery Discharged

UPS Load18.2%

Runtime Remaining0Minutes

Internal Temperature2.0°C / 35.6°F

- Power Status

Input Voltage123.0VAC

Output Voltage123.0VAC

Input Frequency60.0Hz

Output Frequency60.0Hz

- Battery Status

Battery Charge100.0%

Battery Voltage26.9VDC

What is going on?  We have no runtime available despite no outages for some time.  The UPS also triggered a shutdown on 12-15 with supposedly no outage?  

Data log over that time:

12/15/18 10:41:18 124.0 124.0 26.9 100 60.0 60.0 14.3 2.0

12/15/18 10:21:18 124.0 124.0 26.9 100 60.0 60.0 14.9 2.0

12/15/18 10:01:18 124.0 124.0 26.9 100 60.0 60.0 14.9 2.0

12/15/18 09:41:18 124.0 124.0 26.9 100 60.0 60.0 14.3 2.0

12/15/18 09:21:18 124.0 124.0 26.9 100 60.0 60.0 14.9 2.0

12/15/18 09:01:18 124.0 124.0 26.9 97 60.0 60.0 14.9 2.0

12/15/18 08:41:18 124.0 124.0 26.9 94 60.0 60.0 14.3 2.0

12/15/18 08:26:02 124.0 124.0 26.9 100 60.0 60.0 18.2 2.0

12/15/18 08:06:02 124.0 124.0 26.9 100 60.0 60.0 17.5 2.0

12/15/18 07:46:02 124.0 124.0 26.9 100 60.0 60.0 17.5 2.0

Event log: 

12/15/18 21:01:29 Battery Discharged

12/15/18 21:01:28 Self Test Passed

12/15/18 21:01:16 Self Test Initiated

12/15/18 21:01:16 Battery Charge in Range

12/15/18 21:00:55 Battery Discharged

12/15/18 21:00:55 Calibration Complete

12/15/18 21:00:50 Calibration Started

12/15/18 21:00:49 Battery Charge in Range

12/15/18 08:41:01 Insufficient Runtime Available

12/15/18 08:40:59 Battery Discharged

12/15/18 08:40:58 Communication Established

12/15/18 08:40:44 Monitoring Started

12/15/18 08:27:18 Monitoring Stopped

12/15/18 08:27:17 Main Group commanded to: shutdown using delay

12/15/18 08:27:17 Low Runtime Remaining

12/15/18 08:27:17 Shutdown process started

12/15/18 08:27:16 Low Battery

12/15/18 08:27:16 On Battery

12/14/18 22:25:44 Insufficient Runtime Available

12/14/18 22:25:42 Battery Discharged

12/14/18 22:25:42 Communication Established

12/14/18 22:25:27 Monitoring Started

12/14/18 21:45:05 Monitoring Stopped

12/9/18 09:45:41 Insufficient Runtime Available

12/9/18 09:45:39 Battery Discharged

12/9/18 09:45:39 Communication Established

12/9/18 09:45:23 Monitoring Started

12/9/18 09:07:45 Monitoring Stopped

Is the unit itself bad?  These batteries are less than 2 months old, and are standard replacement batteries.