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o5gmmob8
l33t
Joined: 17 Oct 2003
Posts: 617
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 Posted: Fri Jun 06, 2025 7:02 pm Post subject: Nut ups |
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We briefly lost power for < 5s yet my system powered off. I checked later and found that I did NOT actually have any NUT UPS services running at the time. I have since enabled the services, they were properly configured.
When I check the status of my battery:
| Code: | upsc CyberPowerUPS@localhost
battery.charge: 100
battery.charge.low: 10
battery.charge.warning: 20
battery.mfr.date: CPS
battery.runtime: 3840
battery.runtime.low: 300
battery.status: 100%
battery.type: PbAcid
battery.voltage: 24.0
battery.voltage.nominal: 24
device.mfr: CPS
device.model: CST135XLU
device.serial: REDACTED
device.type: ups
driver.debug: 0
driver.flag.allow_killpower: 0
driver.name: usbhid-ups
driver.parameter.interrupt_pipe_no_events_tolerance: -1
driver.parameter.pollfreq: 12
driver.parameter.pollinterval: 15
driver.parameter.port: auto
driver.parameter.product: CST135XLU
driver.parameter.productid: 0501
driver.parameter.serial: REDACTED
driver.parameter.synchronous: auto
driver.parameter.vendor: CPS
driver.parameter.vendorid: 0764
driver.state: quiet
driver.version: 2.8.3
driver.version.data: CyberPower HID 0.83
driver.version.internal: 0.62
driver.version.usb: libusb-1.0.28 (API: 0x0100010A)
input.sensitivity: normal
input.transfer.high: 139
input.transfer.low: 100
input.voltage: 118.0
input.voltage.nominal: 120
output.voltage: 118.0
ups.beeper.status: enabled
ups.delay.shutdown: 60
ups.delay.start: 120
ups.firmware: BF01403CA
ups.load: 13
ups.mfr: CPS
ups.model: CST135XLU
ups.power.nominal: 1350
ups.productid: 0501
ups.realpower.nominal: 810
ups.serial: REDACTED
ups.status: OL
ups.test.result: No test initiated
ups.timer.shutdown: -60
ups.timer.start: -60
ups.vendorid: 0764 |
1. Is there anything there that looks suspect? For the system to turn off as quickly as it did, it is bizarre, the battery looks like it is charged here. The computer is plugged into the surge+battery side. I double-checked.
2. Is there a way I check test this without finding out the hard way?
Thanks, |
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zen_desu
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Joined: 25 Oct 2024
Posts: 298
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o5gmmob8
l33t
Joined: 17 Oct 2003
Posts: 617
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| Posted: Fri Jun 06, 2025 7:12 pm Post subject: |
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| Yes, they're > 4 years old, so I'm thinking they're junk. But, I'd like to think they still have some life. |
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zen_desu
Apprentice
Joined: 25 Oct 2024
Posts: 298
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| Posted: Fri Jun 06, 2025 7:15 pm Post subject: |
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| o5gmmob8 wrote: | | Yes, they're > 4 years old, so I'm thinking they're junk. But, I'd like to think they still have some life. |
They have enough life to run a LED light bulb for some number of hours. Lead cells are less efficient at high loads, and what a "high load" is for that cell depends on its health.
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NeddySeagoon
Administrator
Joined: 05 Jul 2003
Posts: 55341
Location: 56N 3W
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| Posted: Fri Jun 06, 2025 7:33 pm Post subject: |
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o5gmmob8,
The UPS should have done its thing anyway. The NUTS service allows it to tell the PC things, like to perform an orderly shutdown before the power runs out.
At 810w for two minutes, with batteries in good condition, it won't go for very long when they are not.
The maximum power the batteries can deliver drops with age too.
What is the battery voltage really, measured with a volt meter?
Two 12v nominal lead acid batteries in series should be about 26.4v on charge.
If they are low by 2v, you have a dud cell. It will quickly charge reverse polarity on discharge, so your 26.4v is down to about 22v, which is the same as a fully discharged battery. The UPS will probably detect that as fully discharged and shut down.
You don't need a PC as a test load. Something else, like a PC monitor will do.
Keep the test load under 800w though.
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Regards,
NeddySeagoon
Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail. |
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