UPSLookupBack to searchSearch

Standby · ST900U

CyberPower datasheet

Not user-replaceable

CyberPower's datasheet says the battery in the ST900U is not user-replaceable. Contact CyberPower support for service.

Listed by CyberPower

What the source says

Product-page specifications: User Replaceable Battery No. Datasheet: Field-serviceable Battery, Replaceable by qualified technician. The source doesn't list voltage, chemistry, or connector details.

Source

  • CyberPower ST900U datasheet
    ST900U only. The datasheet and product page say the battery is not user-replaceable and do not name a cartridge SKU.
    Last checked October 19, 2026.

If a new battery isn't the answer

The warning is still on Common problemsBeeping or chirping Triage guideOther CyberPower modelsFamily list