[ STANDBY / OFFLINE UPS // IDENTIFIED MODEL ]
CyberPower ST425
CyberPower North American standby UPS: 425 VA / 260 W. Eight NEMA 5-15R outlets: four battery-backup + surge-protected and four surge-only outlets. This record is limited to the named model and regional variant; confirm the complete unit label and matching manufacturer documentation.
ARCHIVAL IDENTIFICATION: Record full SKU/suffix, input and output labels, serial/date code, hardware revision, battery part/age, condition, accessories and the manual revision used. Similar model names do not establish electrical equivalence.
Exact model specifications
| Manufacturer / catalog topology | CyberPower; standby (offline) UPS. The inverter normally remains out of the utility path and assumes the load after a transfer event; it is not line-interactive AVR or online double-conversion. |
|---|---|
| Capacity / regional input | 425 VA apparent-power limit / 260 W real-power limit; North American 120 V AC nominal input and 60 Hz service. Check the full nameplate for accepted input range and regional approval; VA and W limits both matter. |
| Output / waveform | 120 V AC nominal North American output; standby (offline) transfer and simulated-sine-wave output on battery. Waveform and transfer tolerances are not inferred across revisions; match the manufacturer specification to the exact suffix. |
| Receptacles / load allocation | Eight NEMA 5-15R outlets: four battery-backup + surge-protected and four surge-only outlets. Keep critical equipment on the battery-backed group. Never exceed the individual receptacle, total VA or total watt limit; USB charging sockets, if any, are not AC outlets. |
| Battery / replacement / hot-swap | Internal sealed lead-acid battery. Follow the ST425 manual for inspection, service, replacement and recycling; do not assume hot-swap capability. |
| Runtime limits / test conditions | Manufacturer runtime is load-dependent; use the ST425 chart rather than a VA-only estimate. Full-load operation is limited by the 260 W rating and runtime declines as the battery ages or is cold/undercharged. Runtime tests should record load watts, battery age/health, charge state, room temperature and test date; do not extrapolate from an empty-unit self-test. |
| Interface / host compatibility | LED status/alarm only; no USB data or network management interface is specified for ST425. There is no host data connection for shutdown signaling, so PowerPanel software/OS compatibility does not apply to this exact ST425. |
| Protection / scope | Surge protection and battery backup apply only to the receptacles and protection paths labeled for this model. The UPS does not correct an unsafe branch circuit, provide a ground where none exists, or guarantee protection from every transient. |
Safety, service & limits
- Use only on the voltage, frequency and grounded supply shown on the unit label; never defeat grounding, daisy-chain UPS outputs, or connect a generator/alternate source contrary to the matching manual.
- Do not connect laser printers, heaters, motors or other high-inrush loads unless the manufacturer explicitly permits them and the continuous and surge limits are satisfied.
- Do not open an energized enclosure or service an internal battery outside the manual’s procedure. Lead-acid batteries can deliver high fault current and may contain corrosive electrolyte; avoid short circuits and dispose/recycle under local rules.
- Remove damaged units from service if the case, cord, plug, grounding, receptacle, battery or indicators show heat, swelling, leakage, cracking, odor, corrosion or other faults. Follow the manufacturer warnings for shutdown and isolation.
- Battery backup is finite and is not a substitute for safe shutdown, a properly rated circuit, electrical code compliance, or manufacturer instructions. Re-check the outlet map, firmware/software support and nameplate before deployment.
Manufacturer sources and documentation
- CyberPower — CyberPower ST425 manufacturer product informationPrimary source for the exact model, nameplate capacity, configuration and downloadable model resources; confirm regional suffix.
- CyberPower ST425 user manual and safety instructionsManufacturer documentation/support source. Select the manual or software information for the exact model and revision; this archive is not a substitute for the current instructions.