CyberPower Standby UPS Systems

About CyberPower Standby UPS Systems

CyberPower Standby UPS Systems

The CyberPower standby (offline) UPS series gives desktops, home offices, point-of-sale terminals, networking gear, and small AV setups dependable battery backup and surge protection without the cost of a larger online or line-interactive unit. These models sit at the entry tier of CyberPower's lineup: when utility power is present, equipment runs on filtered mains power; when power fails or sags below threshold, the UPS transfers to battery in milliseconds so connected devices keep running long enough to save work and shut down cleanly. Capacities in this collection run from 350 VA / 255 W up to 950 VA / 510 W, all in a compact tower (mini-tower) form factor with a simulated sine wave output at 120 VAC.

Compare the models

See the full range below for current pricing and availability.

How to choose

Size by watts, not just VA. Add up the wattage of everything you plan to plug into the battery-backed outlets and pick a model whose watt rating comfortably exceeds that total. As a rule of thumb, load the UPS to no more than about 70–80% of its watt rating so you keep headroom for runtime. The VA figure is the apparent-power ceiling; the watt figure is the real-power limit and is the one that usually constrains a standby UPS first.

Set runtime expectations. A standby UPS is designed to bridge brief outages and give you time to save and shut down, not to run equipment for extended periods. The half-load and full-load runtimes in the table above show what to expect: heavier loads draw the battery down faster. If you need longer hold-up, choose a higher-capacity model and run it at a lighter load.

Topology. Every model here is standby (offline) topology, the most economical design and a good fit for single workstations, routers and modems, and consumer electronics. If you run sensitive equipment that needs continuous voltage regulation under frequent brownouts — or active power-factor-corrected (PFC) power supplies — consider stepping up to a line-interactive or online double-conversion CyberPower series instead.

Form factor. These are all compact tower / mini-tower units intended to sit on or under a desk; there are no rackmount units in this standby range.

Key features

• Automatic battery backup with millisecond transfer on power loss
• Surge protection across all outlets, with a mix of battery+surge and surge-only receptacles on the higher-capacity U-series models
• Simulated sine wave output at 120 VAC for compatibility with everyday electronics
• Standard NEMA 5-15R outlets, including wider-spaced receptacles on several models to fit transformer-block plugs
• Compact tower footprint for desktop or under-desk placement

Warranty, Canadian shipping & support

Every model in this series carries a 3-year limited warranty from CyberPower covering the UPS and its internal battery. All units are genuine CyberPower stock shipped from our Canadian warehouse, so you avoid cross-border duties and delays and get local support on your order.

When the internal battery eventually wears out, you can keep the unit in service with a fresh pack — see our CyberPower replacement batteries hub for compatible cartridges, and browse the full CyberPower brand page for line-interactive and other UPS families.

Frequently asked questions

What is a standby (offline) UPS?
A standby UPS runs your equipment on utility power during normal operation and switches to its internal battery within milliseconds when the power fails or drops out of range. It is the most economical UPS topology and is well suited to desktops, networking gear, and small electronics.

How do I size a UPS — by VA or by watts?
Size primarily by watts. Total the wattage of the devices on the battery outlets and choose a model whose watt rating exceeds that total with room to spare. In this series watt ratings run from 255 W up to 510 W.

How long will it run during an outage?
Standby UPS units are meant to bridge short outages and allow a safe shutdown. Expect a few minutes at half load and roughly one to two minutes at full load, as shown in the comparison table. Run a lighter load for more runtime.

Can I replace the battery later?
Yes. These units use replaceable batteries; when capacity fades you can install a new pack rather than replace the whole UPS. See our CyberPower replacement batteries hub for the right cartridge.

Are these rackmountable?
No. Every model in this standby collection is a compact tower / mini-tower unit. For rackmount options, look at CyberPower's line-interactive and online series.

UPSPLUSBATTERY is an authorized Canadian reseller of genuine CyberPower UPS systems; CyberPower and model names are trademarks of their respective owners.