Werk #22549: Redfish PSU: accept voltage with unit

Component	Checks & agents
Title	Redfish PSU: accept voltage with unit
Date	Oct 5, 2026
Level	Trivial Change
Class	Bug Fix
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	3.0.0b1 Not yet released Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT 2.5.0p16 Not yet released Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT 2.4.0p38 Not yet released Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT

Some Redfish BMCs report the line input voltage of a power supply as text with a unit, for example 220V, instead of a number. The "Power supply" service then crashed with ValueError: could not convert string to float: '220V'.

A trailing "V" is now accepted, so such power supplies report their input voltage as usual. Any other value that is not a number is shown as UNKNOWN with the value the device sent, while input power, output power and capacity are still reported.

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