On Sun, Nov 1, 2020 at 9:03 AM Charles Lepple <clep...@gmail.com> wrote:
> This particular UPS model is returning a fixed (in the sense of > "constant") integer "24" (not 24.0) for both battery voltage and nominal > battery voltage, likely because according to the vendor, some models do not > have a battery voltage sensor (or, I suspect, it isn't accessible to the > microprocessor that sends stats back over USB). Given the broken HID report > descriptor that the UPS provides, NUT 2.7.2 scales "24" to "16.0". NUT > 2.7.4 uses a heuristic to "fix" that value back to 24.0, but "garbage in, > garbage out". > I thank you all for your insights, I learned new things! Here are some anecdotes from my other Cyberpower UPSs: or1500lcdrm1u@str002 Ubuntu 16.04 LTS battery.voltage: 10.1 battery.voltage.nominal: 24 device.model: OR1500LCDRM1U driver.version: 2.7.2 driver.version.data: CyberPower HID 0.3 driver.version.internal: 0.38 ups.model: OR1500LCDRM1U ups.test.result: Done and passed cp1350@str003 Ubuntu 16.04 LTS battery.voltage: 16.0 battery.voltage.nominal: 24 device.model: CRCA102\#BJ1 driver.version: 2.7.2 driver.version.data: CyberPower HID 0.3 driver.version.internal: 0.38 ups.model: CRCA102#BJ1 ups.test.result: Done and warning cp1500@ap-001 Slackware 14.2 (nut 2.7.4 compiled locally) battery.voltage: 27.2 battery.voltage.nominal: 24 device.model: CP1500AVRLCDa driver.version: 2.7.4 driver.version.data: CyberPower HID 0.4 driver.version.internal: 0.41 ups.model: CP1500AVRLCDa ups.test.result: Done and passed cp1500@dns1 Slackware 14.2 (nut 2.7.4 compiled locally) battery.voltage: 27.1 battery.voltage.nominal: 24 device.model: CP1500AVRLCDa driver.version: 2.7.4 driver.version.data: CyberPower HID 0.4 driver.version.internal: 0.41 ups.model: CP1500AVRLCDa ups.test.result: Done and passed cp1500@thinkpad Ubuntu 18.04 LTS battery.voltage: 27.0 battery.voltage.nominal: 24 device.model: CP1500AVRLCDa driver.version: 2.7.4 driver.version.data: CyberPower HID 0.4 driver.version.internal: 0.41 ups.model: CP1500AVRLCDa ups.test.result: Done and passed
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