Datasheet
User Manual
The CyberPower ST900U is a reliable 900 VA / 500 W standby UPS designed to protect home office and small electronics from power interruptions and surges. This compact unit is equipped with 12 NEMA 5-15R outlets, six of which provide battery backup and surge protection, while the remaining six offer surge protection only. Its 5-foot power cord with a NEMA 5-15P plug ensures easy placement. With a surge protection rating of 890 joules, the ST900U is engineered to safeguard connected devices from voltage spikes, providing an essential shield for your computing and networking equipment.
The ST900U features a streamlined LCD display that provides real-time information on power conditions and battery status. For management, it offers USB connectivity to interface with included PowerPanel Personal Edition software, allowing users to monitor and configure the UPS settings directly from their computer. This unit operates with a typical transfer time of 8 milliseconds, providing seamless transition to battery power during outages. It has a 2-year limited warranty and a $125,000 Connected Equipment Guarantee, ensuring that your devices are protected and that you have peace of mind with your purchase.
| Battery Features |
| Battery Quantity |
1 |
| Battery Size |
12V / 7.2 Ah |
| Battery Type |
Sealed Lead-Acid Battery |
| Hot Swappable |
No |
| Recharge Time |
8 Hours |
| Compliance & Warranty |
| CEG Amount |
$125000 |
| RoHS Compliant |
RoHS Compliant |
| Safety |
UL1778 cUL FCC DOC Class B CEC |
| Warranty |
3 Year Limited Warranty |
| Electrical Protection Features |
| EMI/RFI Filtration |
Yes |
| Overload Protection |
Internal Circuitry Limiting Circuit Breaker Protected |
| Surge Protection |
Yes, 890 J |
| Input Characteristics |
| Frequency Range |
47 Hz 63 Hz |
| Plug Type |
NEMA 5-15P |
| Interfaces & Monitoring |
| HID Compliant USB Port |
Yes |
| Management Software |
PowerPanel Personal |
| Outlet Details |
| Outlet Type |
12 NEMA 5-15R |
| Total Number of Outlets |
12 |
| Output Characteristics |
| Battery Frequency |
50/60 Hz 1% |
| Battery Voltage |
120 VAC 5% |
| Battery Waveform |
Simulated Sine Wave |
| Capacity (VA) |
900 VA |
| Capacity (Watts) |
500 W |
| Physical Properties |
| Actual Dimensions (in) |
12.2 x 3.1 x 7 (in) |
| Actual Weight (lb) |
7.7 |
| Color |
Black |
| Cord Length |
5 ft (1.5 m) |
| Shipping Dimensions (in) |
15.0 x 4.31 x 9.5 (in) |
| Shipping Weight (lb) |
9.9 |
| Runtime and Battery Maintenance |
| Full-Load Runtime |
2 min |
| Half-Load Runtime |
7.5 min |
| Unit Configuration |
| Energy Efficiency Mode |
GreenPower UPS High-Efficiency |
| Form Factor |
Compact |
| Model ID |
ST900U |
| Topology Type |
Standby |
