: You must close all PowerChute services and resident parts from your system memory so the software can claim the COM port.
Finding a legitimate download can be difficult because the software is no longer officially hosted on mainstream platforms and is often flagged by Schneider Electric (APC) for modifying hardware firmware.
Go to and select "Smart-UPS 3Gen. Battery Const. AUTO Fix" . Select your COM Port . apc-fix full version download
: If your UPS has a Network Management Card (NMC) installed, it must be removed before starting. Automatic Fix : Launch APC-Fix.
: The software is historically hosted on a dedicated IP-based site (93.125.49.123) which provides basic documentation and download links. : You must close all PowerChute services and
: It allows for fast and accurate calibration without needing to fully discharge the battery.
: To obtain the latest, fully functional full version, the author recommends contacting him directly at alexeikobak@gmail.com . Battery Const
If you find APC-Fix too complex or are using a modern UPS (SMT or SMX series), consider these officially supported or open-source alternatives:
: It directly edits the UPS registers to restore original runtime values.
