SUA1500i: dead battery or broken UPS ?

[Anonymous user]

Suddenly my 4 years old SUA1500i has started signaling "battery disconnected" (dead battery led is blinking and endless intermittent beep). Before buying a new battery i would like to be sure the problem is only the battery and not the whole ups. This is the description of what happened and of the tests i performed:

1) The "battery disconnected" alarm started suddenly, previously self-test were all  completed without errors

2) i tried to turn off and then on again the ups, it almost immediately went into "battery disconnected" condition

3) i tried to braindead the ups (no main power, battery cable disconnected), with the same result as the 2)

4) Pulled out the battery, checked the cable, but everything looked as normal.

5) I manually measured the battery voltage: it was  25 V

6) i noticed that the fan is not operating as usual, every 30 seconds it stops and restarts ( always at low speed)

As you can imagine i'm not convinced the problem is the battery. Why the UPS is signaling battery disconnected ? If the battery was completely dead i imagine the ups cannot sense it, but i measured 25V!!!

Any suggestions ?

The APCUPSD status show this:

APC	: 001,042,1039
DATE	: 2014-03-12 00:55:48 +0100

VERSION  : 3.14.8 (16 January 2010) redhat

CABLE	: USB Cable
MODEL	: Smart-UPS 1500

UPSMODE  : Stand Alone

STARTTIME: 2014-03-12 00:55:45 +0100

STATUS   : ONLINE NOBATT

LINEV

: 231.8 Volts

LOADPCT  :  18.8 Percent Load Capacity

BCHARGE  : 100.0 Percent

TIMELEFT :  69.0 Minutes

MBATTCHG : 5 Percent

MINTIMEL : 3 Minutes

MAXTIME  : 60 Seconds

OUTPUTV  : 231.8 Volts

SENSE	: High
DWAKE	: -01 Seconds

DSHUTD   : 090 Seconds

LOTRANS  : 208.0 Volts

HITRANS  : 253.0 Volts

RETPCT   : 000.0 Percent

ITEMP

: 22.0 C Internal

ALARMDEL : Always

BATTV

: 21.3 Volts

LINEFREQ : 50.0 Hz

LASTXFER : No transfers since turnon

NUMXFERS : 0

TONBATT  : 0 seconds

CUMONBATT: 0 seconds

XOFFBATT : N/A

SELFTEST : NO

STESTI   : 14 days

STATFLAG : 0x03000008 Status Flag

BATTDATE : 2009-12-11

NOMOUTV  : 230 Volts

NOMBATTV :  24.0 Volts

FIRMWARE : 653.18.I USB FW:7.4

APCMODEL : Smart-UPS 1500

END APC  : 2014-03-12 00:55:49 +0100

[Anonymous user · Accepted solution]

Suddenly my 4 years old SUA1500i has started signaling "battery disconnected" (dead battery led is blinking and endless intermittent beep). Before buying a new battery i would like to be sure the problem is only the battery and not the whole ups. This is the description of what happened and of the tests i performed:

1) The "battery disconnected" alarm started suddenly, previously self-test were all  completed without errors

2) i tried to turn off and then on again the ups, it almost immediately went into "battery disconnected" condition

3) i tried to braindead the ups (no main power, battery cable disconnected), with the same result as the 2)

4) Pulled out the battery, checked the cable, but everything looked as normal.

5) I manually measured the battery voltage: it was  25 V

6) i noticed that the fan is not operating as usual, every 30 seconds it stops and restarts ( always at low speed)

As you can imagine i'm not convinced the problem is the battery. Why the UPS is signaling battery disconnected ? If the battery was completely dead i imagine the ups cannot sense it, but i measured 25V!!!

Any suggestions ?

The APCUPSD status show this:

APC	: 001,042,1039
DATE	: 2014-03-12 00:55:48 +0100

VERSION  : 3.14.8 (16 January 2010) redhat

CABLE	: USB Cable
MODEL	: Smart-UPS 1500

UPSMODE  : Stand Alone

STARTTIME: 2014-03-12 00:55:45 +0100

STATUS   : ONLINE NOBATT

LINEV

: 231.8 Volts

LOADPCT  :  18.8 Percent Load Capacity

BCHARGE  : 100.0 Percent

TIMELEFT :  69.0 Minutes

MBATTCHG : 5 Percent

MINTIMEL : 3 Minutes

MAXTIME  : 60 Seconds

OUTPUTV  : 231.8 Volts

SENSE	: High
DWAKE	: -01 Seconds

DSHUTD   : 090 Seconds

LOTRANS  : 208.0 Volts

HITRANS  : 253.0 Volts

RETPCT   : 000.0 Percent

ITEMP

: 22.0 C Internal

ALARMDEL : Always

BATTV

: 21.3 Volts

LINEFREQ : 50.0 Hz

LASTXFER : No transfers since turnon

NUMXFERS : 0

TONBATT  : 0 seconds

CUMONBATT: 0 seconds

XOFFBATT : N/A

SELFTEST : NO

STESTI   : 14 days

STATFLAG : 0x03000008 Status Flag

BATTDATE : 2009-12-11

NOMOUTV  : 230 Volts

NOMBATTV :  24.0 Volts

FIRMWARE : 653.18.I USB FW:7.4

APCMODEL : Smart-UPS 1500

END APC  : 2014-03-12 00:55:49 +0100