Hello Jeff, `upsstats` by itself only relays and renders the information provided by a NUT data server (upsd) and the NUT driver for the device. So you can revise the specific reported values with e.g. `upsc` command-line client to be sure.
What I think happens here is that the driver uses a `battery.voltage.low/nominal/high` group of readings which does not match the hardware circumstances well for some reason. These readings can be provided by a device (and then a 3x12=36V nominal would be reasonable), it can be imposed in your driver configuration with `override.battery.voltage.... = ...` lines, and in some but not all drivers the ranges can be guessed from other information served by the device, as a fallback. Use of overrides is fairly popular, so check if that would help you (and that you don't have it misleadingly misconfigured already by copy-paste of an `ups.conf` device section from the internet). While at it, check the manual pages for the driver you use - if it supports a `runtimecal` option. It often comes up in this context, to give the driver a better grasp at battery discharge dynamics so it can issue the critical-situation alarms at power loss if the device/protocol lacks the ability on its own. Hope this helps, Jim Klimov Jim On Thu, Nov 30, 2023 at 12:57 AM Jeff Rickman <jrick...@myamigos.us> wrote: > Hello, > > I am using Nut 2.8.0 (2.8.0-7 packages) Debian 'Bookworm' in it's Devuan > form 'Daedalus'. > > When I look at my Eaton (ex-MGE Powerware) E5115 UPS boxes in NUT > 'upsstats" I am confused by the battery readings. > > Under the 'System' column I can click on the link and obtain a GUI with a > few meters. > > The NUT 'upsstats' battery voltage meter for these E5115 UPS boxes is > almost in the lower level RED zone which is just under 40 volts. The GREEN > zone seems to be 48 to 55 volts with a RED zone above that. > > Here's the confusing part: These Eaton E5115 UPS boxes only have 3x 12v > 9Ah sealed lead-acid AGM battery blocks inside them. I verified that after > I recently changed out some aged batteries from those boxes. There is no > room for any more battery blocks in the case. > > NUT 'upsstats' reports the battery voltage as 40.25 volts for 1 of the UPS > boxes and 39.02 volts for the other UPS box. Those voltages seem reasonable > (and similar to past results for other battery blocks) for NEW 12v sealed > lead-acid AGM battery blocks. > > When I look at the 'Data tree' link from the NUT 'upsstats' tool I can see > the organized list of data from the UPS. There does not appear to be any > upper or lower battery charge limits in that data. > > So, how does NUT 'upsstats' figure out it's upper and lower limits and > where it places it's RED zones? Can these meters be adjusted in some way? > > /Jeff/ > > -- > > > _______________________________________________ > Nut-upsuser mailing list > Nut-upsuser@alioth-lists.debian.net > https://alioth-lists.debian.net/cgi-bin/mailman/listinfo/nut-upsuser >
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