CyberPower SL700U standby UPS review: Keep your home network going

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The eight-outlet CyberPower SL700U has an issue: it’s not precisely fish nor fowl. This well-made, comparatively compact unit can present backup energy of as much as 370 watts/700 volt-amperes (VA), sufficient to supply standby energy for about 9 minutes for a modest laptop, like an iMac or mid-range Dell Inspiron tower with an exterior monitor.

This UPS, nevertheless, provides energy output from its battery that solely simulates the sleek sine wave produced by alternating-current energy that comes from an electrical utility. This simulation lurches via steps as an alternative of sliding easily between adverse and constructive voltage, which is an issue for contemporary laptop energy provides. This isn’t a difficulty with solid-state units similar to Wi-Fi routers or broadband modems—these are the units greatest suited to make use of with it.

This overview is a part of TechHive’s protection of the most effective uninterruptible energy provides, the place you’ll discover opinions of the competitors’s choices, plus a purchaser’s information to the options you must take into account when searching for the sort of product.

Most trendy computer systems characteristic energetic energy issue correction (PFC). This lets the {hardware}’s energy provide extra effectively rework incoming AC into the DC energy used inside a pc. It may additionally work throughout quite a lot of voltages and frequencies equipped by utilities around the globe. However if you mix a simulated sine wave with energetic PFC as an alternative of a pure sine wave produced by more-expensive UPSes, the facility provide might produce a high-pitched whine each time energy comes from the backup machine’s battery. It’s additionally potential that the facility provide can expertise small quantities of injury that may add up over time.

cyberpower sl700u l CyberPower Programs

The CyberPower SL700 is greatest suited to offering backup energy to networking tools, however you would possibly solely have the ability to match two outsized energy adapters as a result of its shops are shut collectively.

This UPS can be configured as a standby mannequin, in distinction to a extra superior line-interactive UPS. A standby UPS faucets its battery each time voltages sags or surges sufficient that it wants to chop units from energy mains connected to its battery-backed shops and feed electrical energy straight. A line-interactive mannequin passes all its energy via a conditioner, which cleans up small eccentricities and retains the battery in reserve for extra excessive situations, or a full-on energy outage. That preserves the lifetime of the battery with a line-interactive mannequin in areas with routine energy sags, surges, outages, or different issues.

A line-interactive UPS also can leap into motion in about 4 milliseconds (ms) to supply energy from its battery, versus a rated 8ms for the SL700U. That distinction can generally be sufficient to crash a delicate laptop. With line-interactive UPSes costing solely barely extra watt-for-watt as standby, I like to recommend laptop homeowners choose that fashion.

This UPS does have a price benefit for offering battery backup to less-sensitive, however probably extra vital community units in your house—to wit, a broadband modem, a Wi-Fi router or the entry factors in a mesh Wi-Fi community, in addition to an ethernet change if in case you have a profusion of wired units.

cyberpower powerpanel 2.2.2 Glenn Fleishman / IDG

CyberPower’s software program permits you to configure various choices for its UPS, even when the UPS isn’t completely related to your laptop.

That sort of tools has a low energy draw, permitting an extended runtime on an reasonably priced standby UPS just like the SL700U. The rated time for this mannequin would enable maintaining 100W of units operating for about 20 minutes, and 50W for about an hour. With significantly power-efficient gear, you would possibly get so long as two hours out of the battery.

In the event you’re in a location with relative frequent outages, together with ones that final 5 to twenty minutes, you would possibly have the ability to preserve your community going with this UPS, when you use cellular units and laptops that don’t require their very own UPS. (web service suppliers usually have mills and different backups that permit them proceed to supply cellphone, knowledge, and cable providers even whereas there’s a localized and even regional energy outage.)

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