runtime remaing problem

Anonymous user · ‎2021-07-01

Hi, i replaced the battery pack (it has 4 battery). The batteries are new but i see in parachute that the remaining time show 4 minutes. i dont know what's is the problem.
thanks.

BillP · ‎2021-07-01

Let us start by performing what do we call as Manual Runtime Calibration.

Note: Before beginning the calibration make sure the UPS has been online and charging for at leat 24 hours for just the UPS or 48 hours for a UPS with external batteries.

1. Stop the PowerChute software from running and disconnect the serial cable.
2. There must be at least a 30% load attached to the UPS during this procedure, and this load cannot fluctuate more than +/- 5%. This process will cause the UPS to shut off and cut power to its outlets, therefore, attach a non-critical load to the UPS and then force the UPS on battery by disconnecting it from utility power.
3. Allow the unit to run on battery until it turns off completely. Make sure a 30% load or greater is present!
4. Plug the UPS back into the wall outlet and allow it to recharge (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. Remember that if the unit is an older model, then the runtime will not improve significantly.

See Answer In Context

Anonymous user · ‎2021-07-01

It could be a factor of things, what model are we talking about? Not familiar with the powechute software, does it show the current load on the UPS?

Anonymous user · ‎2021-07-01

sorry. i make a mistake. The software that i use is powerchute bussiness edition. and the ups's model is smart ups rt 2000 xl. it has a 23% of load. i supose it would have 50min of runtime remaining but is shows 5 minutes or less.

BillP · ‎2021-07-01

Let us start by performing what do we call as Manual Runtime Calibration.

Note: Before beginning the calibration make sure the UPS has been online and charging for at leat 24 hours for just the UPS or 48 hours for a UPS with external batteries.

1. Stop the PowerChute software from running and disconnect the serial cable.
2. There must be at least a 30% load attached to the UPS during this procedure, and this load cannot fluctuate more than +/- 5%. This process will cause the UPS to shut off and cut power to its outlets, therefore, attach a non-critical load to the UPS and then force the UPS on battery by disconnecting it from utility power.
3. Allow the unit to run on battery until it turns off completely. Make sure a 30% load or greater is present!
4. Plug the UPS back into the wall outlet and allow it to recharge (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. Remember that if the unit is an older model, then the runtime will not improve significantly.