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Home Questions Tags Users Unanswered. Post as a guest Name. Post as a guest Name. Battery longevity and service life of the UPS may be conserved by reducing the sensitivity of the UPS, as long as your equipment can operate normally under the conditions detailed below. Use a pointed object such as a pen to do so. The default setting is "high"; press the button once to set the sensitivity to "medium", and press it again to set it to "low"; pressing it a third time will set it back to "high". The sensitivity setting change will take effect immediately. The green LED next to the button apcupsd signed a sensitivity setting indicator - brightly lit is "high" sensitivity, dimly lit is "medium", and off is "low" sensitivity.

The battery charge graph LEDs on the front panel of a Smart-UPS will flash in unison when the UPS is operating online and the runtime remaining calculated by the Smart-UPS microprocessor is less than two minutes more than the low battery signal warning time minimum of two minutes. This would usually indicate that you need to either decrease the load or install new batteries.

If the batteries are new, then you need to perform a runtime calibration see below. At a apcupsd signed, you could also decrease the low battery warning time.

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apcupsd signed There are four possible settings: 2, 5, 7, or 10 minutes. An APC battery cartridge comprises two batteries physically stuck together with double-sided tape and wired in series.

After the decision to replace the batteries, you will face another decision almost immediately: whether to purchase genuine APC replacement batteries apcupsd signed not. There are pros and cons to purchasing genuine replacement APC batteries.

If you do decide to use third party replacement batteries, please do not choose the cheapest available generic SLA batteries. These batteries will, almost without exception, not last as long as brand name batteries and will need replacing within months instead of years. Even when using brand name replacement batteries, make sure that you choose the UPS version aka "standby" which may cost slightly more, but which will last significantly longer in typical UPS usage long apcupsd signed of standby punctuated with infrequent deep discharges.


Yuasa aka Genesis is also a recommended brand, albeit a bit on the pricey side. Note: When substituting a third party battery with a higher capacity than the original, make sure that it still physically fits in the UPS casing. If the battery does not fit, do not be tempted to install it "externally". Although you can do a hot swap of your batteries while the computer and any other connected equipment is running, it may not be very satisfactory because the UPS will not always detect that the batteries have been swapped and apcupsd will continue to report "Low Battery". If after a self-test, the Apcupsd signed does not detect that the battery has been replaced, you can use apctest to do a soft battery runtime calibration.

For details of doing this, refer to the "Soft" Runtime Calibration section below.

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If after the soft battery runtime recalibration, the UPS does not detect that the battery has been replaced, you will need to do a manual battery runtime calibration. For details of doing this, refer to the "Manual" Runtime Calibration section below. A runtime calibration causes the UPS to recalculate its available runtime capacity based on its current load. Caution: a runtime calibration will deeply discharge the UPS batteries, which can leave a UPS temporarily unable to support its equipment if a utility power failure occurs. Frequent calibrations reduce the life of batteries. APC recommends performing a runtime calibration only annually, semiannually, or whenever the load on the UPS is increased.

Once this has been done, you can then initiate a runtime calibration through apctest. apcupsd signed


Also, it is advisable not to increase or reduce the load when the UPS is calibrating its run time. Apcupsd signed no circumstances should the UPS apcupsd signed turned off during a run time calibration procedure! Once initiated, the calibration must be allowed to run until completion. The run time calibration procedure is not necessary nor advisable for a new UPS. Only old UPSes with batteries that are not subject to discharge for long periods of time should be allowed to perform a run time calibration. When doing a runtime calibration with "older" batteries, APC Technical Support recommend doing a complete discharge and recharge first.

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Most of the information in this section is taken from APC's website. Any non-APC additions have been inserted in square brackets. Perform a Apcupsd signed Calibration. This is a manual procedure and should not be confused with the runtime calibration performed through PowerChute plus [or apctest]. Sometimes it is necessary to reset this microprocessor, especially after the installation of new batteries. Stop the PowerChute plus [or apcupsd] software from running and disconnect the serial cable. Therefore, attach a non-critical load to the UPS and then force the UPS on battery by disconnecting it from utility power [suggest not disconnecting, but simply turning off utility power thereby preserving earthing].

Allow the unit to run on battery until it turns off completely.

Plug the UPS back into the wall outlet [switch utility power back on] and allow it to apcupsd signed it will recharge more quickly turned off and with no load present. Once the unit has recharged, the "runtime remaining" calculation should be more accurate.Apcupsd is a UPS control system that apcupsd signed orderly shutdown of your computer in the If you see the above output, it is a good sign that apcupsd is working. APCUPSd-Docker. This Docker container connects to the local APC UPS or a remote apcupsd instance. Even if running in a container it can notify the host and .

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