[Nut-upsdev] CyberPower CP825AVR-G battery scale

[Stuart D Gathman]

Long ago, Nostradamus foresaw that on 12/24/2011 01:53 PM, Charles
Lepple would write:
> Before you do that... the scaling that we're talking about is usually
> evident from the voltage readings. Most of the errors are misplaced
> decimal points, but in this case, some UPSes read high by a factor of
> 1.5. Even without knowing what kind of battery is used, the
> full-to-empty range of an UPS is smaller than the voltage steps that
> you see between standard battery sizes. We aren't trying to correct
> for calibration errors between units, just bringing the voltages in
> line with the nominal values. Feel free to post the reported voltages
> from upsc, plus any observations about the battery pack(s). I did a
> quick search online, and I see at least two different CP1500AVR unit
> styles - do you have an URL that matches your UPS specs? I think I saw
> one which has four 12-volt batteries, so 48V nominal is likely. 
Output of upsc:

battery.charge: 100
battery.charge.low: 10
battery.charge.warning: 20
battery.mfr.date: CPS
battery.runtime: 4017
battery.runtime.low: 300
battery.type: PbAcid
battery.voltage: 13.8
battery.voltage.nominal: 12
device.mfr: CPS
device.model:  CP 1500C
device.type: ups
driver.name: usbhid-ups
driver.parameter.pollfreq: 30
driver.parameter.pollinterval: 2
driver.parameter.port: auto
driver.version: 2.6.2
driver.version.data: CyberPower HID 0.3
driver.version.internal: 0.35
input.transfer.high: 140
input.transfer.low: 90
input.voltage: 125.0
input.voltage.nominal: 120
output.voltage: 125.0
ups.beeper.status: enabled
ups.delay.shutdown: 20
ups.delay.start: 30
ups.load: 6
ups.mfr: CPS
ups.model:  CP 1500C
ups.productid: 0501
ups.realpower.nominal: 388
ups.status: OL
ups.test.result: Done and passed
ups.timer.shutdown: -60
ups.timer.start: 0
ups.vendorid: 0764