It may falsely report that the Replacement Battery Cartridge is missing.
A severely degraded battery can cause voltage dips that glitch internal logic. apc ups power system error 02000 link
Troubleshooting APC UPS Power System Error 02000 The (often seen on the SRT series like SRT6KXLI or SRT5K) is a generic critical fault indicator . It essentially acts as a "check engine light" for the internal power-carrying components, signifying that the UPS has detected an internal failure it cannot automatically recover from. 🛠 What Does Error 02000 Mean? It may falsely report that the Replacement Battery
When this error occurs, check the UPS logs or display for these related codes: : Output voltage is distorted. : Inverter output is too high. apc ups power system error 02000 link