Werk #18756: ups_bat_temp: Fix crash when UPS reports an empty battery temperature

Component	Checks & agents
Title	ups_bat_temp: Fix crash when UPS reports an empty battery temperature
Date	Jul 8, 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 2.5.0p9 Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT 2.4.0p35 Not yet released Checkmk Community, Checkmk Pro, Checkmk Ultimate, Checkmk Cloud, Checkmk Ultimate MT

Some UPS devices (e.g. the CS141 SNMP/WEB Adapter) report an empty value for the battery temperature. This caused the check to crash with "ValueError: invalid literal for int() with base 10: ''". The check now skips such devices instead of crashing.

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