Network UPS Tools
Power Devices support
Table of Contents

Click here to see reports of other supported models from APC.

Note

When a user reports that a variable/command is not right then it will be highlighted by a red underline.

Bad values/ranges/etc… will get a red dashed outline or red solid left border.

The accompanying explaining comment - if provided - will be emphasized through a red dotted border on the left.

2.6.4

Report #1

This device is known to work with driver usbhid-ups.

You can grab a dummy-ups compliant .dev file to simulate this device clicking here.

Known supported variables

This device is known to support the following variables (values are just examples):

battery.charge

35

battery.charge.low

10

battery.charge.warning

50

battery.date

2001/09/25

battery.mfr.date

2008/01/25

battery.runtime

0

Need calibration.

Notes on calibration

  1. It’s important that the UPS is at 100% charge before starting the procedure; starting at lower will not work at all, not just produce inaccurate numbers.

    I started the procedure when the UPS was at 91% charge. After that it would never report being more than 20% charge, even after leaving it plugged in for hours; running the procedure in FAQ #37 never left it reporting more than 20 seconds of charge left, which I verified was incorrect.

  2. If for some reason the UPS never reaches 100% charge, this can be remedied (in the ACP ES-750 case), by leaving it unplugged for 1 week.

    Doing this allowed me to recover from the case in 1 above. After that the procedure below, as in http://excessups.com/blog/manual-runtime-calibration-apc-ups/, worked fine.

Manual Runtime Calibration for APC UPS

  1. Battery must be at 100% capacity when the Runtime Calibration is initiated/started. (charge the UPS for 24hours prior)

  2. The UPS must have 30-34% load on it during the calibration (Constant load, try: lamps, computers, monitors. Measure load % by PowerChute)

  3. Disconnect the serial/USB comm cable from the UPS (you don’t want PowerChute to shut down equipment)

  4. The battery must be discharged completely (unplug UPS from wall outlet, let the UPS to shut off completely due to a discharged battery).

  5. Remove the attached load (ie – lights, computers)

  6. Let the UPS charge for 8 hours while OFF (plug back into utility power, press OFF button when UPS turns ON)

  7. Turn on UPS (run time should now be accurate)

battery.runtime.low

120

battery.type

PbAc

battery.voltage

11.8

battery.voltage.nominal

12.0

device.mfr

American Power Conversion

device.model

Back-UPS ES 750

device.serial

3B0804X42777

device.type

ups

driver.name

usbhid-ups

driver.parameter.pollfreq

30

driver.parameter.pollinterval

2

driver.parameter.port

auto

driver.version

2.6.4

driver.version.data

APC HID 0.95

driver.version.internal

0.37

input.sensitivity

medium

input.transfer.high

139

input.transfer.low

92

input.voltage

119.0

input.voltage.nominal

120

ups.beeper.status

enabled

ups.delay.shutdown

20

ups.firmware

841.I2 .D

ups.firmware.aux

I2

ups.load

42

ups.mfr

American Power Conversion

ups.mfr.date

2008/01/25

ups.model

Back-UPS ES 750

ups.productid

0002

ups.realpower.nominal

450

ups.serial

3B0804X42777

ups.status

OL CHRG LB

ups.test.result

No test initiated

ups.timer.reboot

0

ups.timer.shutdown

-1

ups.vendorid

051d