We have an APC Back-UPS Pro 700. It's battery went bad so we bought a new one. After installing it we noticed there was only a 3-5 minute runtime even though the load is only around 75w (one Dell workstation connected).
Is there something wrong with the unit ,the battery, something else?
If the run time used to be higher @the same load, with the previous battery (when that one was new), then a run time calibration could help the UPS display the correct run time.
I have come across some third party batteries that don't perform very well. Most are fine.
I have also found that sometimes those particular Back-UPS models (and their siblings, the 1000 to 1500VA models) sometimes need a little prodding to reset their calibration data. Within PowerChute, under the "Run Self Test" item, there is a button to indicate that you've replaced the battery. If you haven't done so, click it and affirm that you wish to update the battery installation date.
This will also reset the battery calibration data.
William...you're a life saver! That did the trick, I'm back up to 45 minutes of runtime.
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