ST425 - Inverter CyberPower - Free user manual and instructions
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| Product Type | Uninterruptible Power Supply (UPS) |
| Brand | CyberPower |
| Model | ST425 |
| VA Rating | 425 VA |
| Watts Rating | 255 W |
| Topology | Standby |
| Input Voltage | 120 V |
| Output Voltage | 120 V |
| Number of Outlets | 4 NEMA 5-15R |
| Battery Type | Sealed Lead-Acid |
| Battery Runtime (Half Load) | Approximately 12 minutes |
| Surge Protection | 1030 Joules |
| Automatic Voltage Regulation | No |
| USB Port | Yes (PowerPanel monitoring) |
| Dimensions (HxWxD) | 4.0 x 7.5 x 12.0 inches |
| Weight | 12.0 lbs |
| Waveform | Simulated Sine Wave |
| Maintenance | Replace battery every 3-5 years |
| Safety Certifications | UL, cUL, FCC |
| Spare Parts | Replacement battery (RB series) |
| Repairability | Battery user-replaceable; internal components not user-serviceable |
| General Information | Designed for home and office protection of electronics |
Frequently Asked Questions - ST425 CyberPower
What is the runtime of the CyberPower ST425?
The CyberPower ST425 provides approximately 12 minutes of runtime at half load (127W) and about 4 minutes at full load (255W).
How do I replace the battery in the ST425?
The battery is user-replaceable. Disconnect the UPS from mains, open the battery compartment, remove the old battery, and install a new one. Use only CyberPower replacement batteries (RB series).
Does the ST425 protect against power surges?
Yes, it offers surge protection rated at 1030 Joules, protecting connected equipment from voltage spikes.
Can the ST425 be used with a generator?
It is not recommended. Generators produce unstable power that may harm the UPS. Use a pure sine wave UPS for generator compatibility.
How many outlets does the ST425 have?
It has 4 NEMA 5-15R outlets, providing battery backup and surge protection.
What does the USB port do?
The USB port connects to a computer for monitoring and automatic shutdown via CyberPower PowerPanel software.
Is the ST425 suitable for sensitive electronics?
Yes, it provides simulated sine wave output suitable for most home and office electronics. However, for equipment requiring pure sine wave, consider a higher model.
How do I test if the UPS is working?
Press the power button briefly to simulate a power failure. The UPS will switch to battery and emit an alarm. Press again to return to AC mode.
What is the warranty on the ST425?
CyberPower offers a 3-year warranty on the UPS and a 2-year warranty on the connected equipment (up to $100,000) with registration.
Can I stack the ST425 with other equipment?
No, do not stack other equipment on top of the UPS. Ensure ventilation around the unit to prevent overheating.
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USER MANUAL ST425 CyberPower
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Product information
Brand : CyberPower
Model : ST425
Category : Inverter