UPS backup power
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APC Back-UPS 850VA
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Power outage hitting your home solar setup? The APC Back-UPS 850VA keeps a NAS or home server running just long enough for a clean, safe shutdown.
- Power: 850 VA / 450 W
- Outlets: 9, 6 battery-backed
- Runtime: Up to 9 min at moderate load
- USB ports: 2 USB charging ports
- 9 outlets, USB charging, 3-year warranty
The APC Back-UPS 850VA (BE850G2) is an off-line UPS built to protect fixed electronics from power outages and surges. With 9 outlets (6 battery-backed, 3 surge-only), two USB charging ports and a protected network port, it keeps a NAS, a home server tied to a solar setup, or a router running through a brief outage or a clean shutdown. Runtime is rated up to around 9 minutes at moderate load, backed by a 3-year warranty.
After a few weeks running behind our home NAS, wired into the same circuit as our solar setup, this APC just gets on with the job quietly. During a ten-second power blip, the NAS didn't even blink: instant switchover, no reboot. On a longer outage, the audible alarm gives plenty of warning to trigger a clean shutdown before the battery runs flat. The 9 outlets are well laid out, and being able to charge a phone straight from the UPS's USB ports during an outage is more useful than it sounds. The one real downside: runtime drops fast as you approach full load, so do not expect to keep working through a long outage, just to shut everything down safely. For the price, the 3-year warranty is a genuine edge over most rivals.
APC Back-UPS 500VA
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Power blip or surge at the campground? This compact APC UPS keeps a router, a Starlink dish or a NAS protected in a van, on a boat or at home.
- Power: 600 VA / 330 W
- Outlets: 7 NEMA, 5 battery-backed
- Runtime: 23 min at 100 W
- USB port: 1 USB charging port (1.5A)
- 7 NEMA outlets, USB charge, 3-year warranty
The APC Back-UPS 500VA (BE600M1) is a compact UPS built to protect fixed network equipment from power outages and surges. With 7 standard NEMA outlets (5 battery-backed, 2 surge-only) and a USB charging port, it keeps a router, a Starlink dish or a small NAS running in a van, on a boat or on shore power, through a brief outage or a clean shutdown. User-replaceable battery, 3-year warranty, around $44.
Running behind our van's Starlink router for a few weeks now, this little APC keeps a low profile, which is exactly what you want from it. On the small voltage dips you get from a campground pedestal, it switches to battery briefly and cleanly, no flickering, no reboot. The tower format is genuinely compact, tucking easily into an electrical locker without hogging space, and the 7 standard NEMA outlets mean you can plug the router or dish straight in, no adapter needed. Runtime stays modest, a few minutes at normal load, plenty to ride out a brief outage or shut down cleanly, not to keep working off-grid for long. For protecting network gear on a budget, it does the job without fuss, and the battery is replaceable once it eventually wears out.
CyberPower CP1500PFCLCD
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Got a NAS with an active PFC power supply? The CyberPower CP1500PFCLCD delivers a true pure sine wave on battery, where a standard UPS can struggle to match it.
- Power: 1500VA / 1000W
- Output wave: Pure sine wave
- Outlets: 12x NEMA 5-15R, all battery-backed
- Runtime: ≈8 min at half load, 2 min at full load
- Pure sine wave, compatible with active PFC power supplies
The CyberPower CP1500PFCLCD is a 1500VA / 1000W backup UPS built for demanding fixed equipment: a NAS, home server, router or Starlink dish connected to a residential solar setup. Its defining feature is a pure sine wave output on battery, identical to mains power, unlike the simulated sine wave used by many consumer UPS units, which can upset some active PFC power supplies found in servers and NAS units. An LCD display, AVR voltage regulation and USB monitoring software round out the package.
We plugged the CP1500PFCLCD into our NAS and a small home server with an active PFC power supply, the kind of setup where a budget UPS can make the power supply audibly complain the moment it switches to battery. Not here: the pure sine wave means the server barely notices the difference between mains and battery, no odd fan noise or power supply error message. The LCD screen is clear and cycles automatically through the useful readings (load, runtime, voltage). During an outage test, the switch was instant and silent. The one catch: at full 1000W load, runtime drops fast to about 2 minutes, so this is one to pair with the USB monitoring software for an automatic clean NAS shutdown rather than relying on a long runtime. A UPS clearly built for power quality rather than endurance, which is exactly what a demanding NAS or small server owner is after, and it has thousands of solid Amazon reviews behind it.
APC Back-UPS Pro 650VA
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Protecting a NAS wired to your solar setup or a Starlink dish on the road? This APC Back-UPS Pro adds an LCD screen and network surge protection.
- Power: 700 VA / 420 W
- Screen: LCD (20+ status conditions)
- Outlets: 6 NEMA, 3 battery-backed
- Network: Ethernet & coax surge protection
- LCD screen, coax + Ethernet protection, AVR
The APC Back-UPS Pro (BR700G) is a line-interactive UPS built to protect a NAS, a home server wired to a solar setup, or a router and its Starlink dish in a van or on a boat. With 700 VA, 6 NEMA outlets (3 battery-backed, 3 surge-only), an LCD screen showing over 20 status conditions, a USB monitoring port, and coax plus Ethernet surge protection, it secures fixed electronics from outages and surges. Around $187, user-replaceable battery.
Running behind a small Synology NAS wired to our solar setup, this Back-UPS Pro stands out straight away from the smaller APC units we tested, thanks to its LCD screen: one glance at the front panel shows battery charge, load and runtime, instead of guessing from a blinking LED. On the mains micro-blips we get on darker winter evenings, the AVR soaks up the voltage dips without even switching to battery, saving runtime for a real outage. The coax and Ethernet surge protection is reassuring with the NAS wired over a cable modem or wired network: a surge riding in on the line gets filtered before it reaches connected gear. The only downside is modest runtime, a few minutes at full load, plenty for a clean NAS shutdown, not for carrying on working off the mains. For anyone wanting a step up from a basic UPS, with a real status screen, this Back-UPS Pro clearly does the job.
Eaton 5S1500LCD
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Power outage? The Eaton 5S1500LCD switches your NAS or home server to battery in about 4ms, one of the fastest transfer times in its class, for a clean shutdown.
- Power: 1500VA / 900W
- Outlets: 10x NEMA 5-15R (5 battery-backed + 5 surge-only)
- Runtime: ≈12 min at half load, 2 min at full load
- Display: LCD + USB monitoring software
- About 4ms transfer time, among the fastest in its class
The Eaton 5S1500LCD is a backup UPS built for fixed equipment that cannot tolerate even a brief power outage: a NAS, home server, router or Starlink dish connected to a residential solar setup. Eaton does not sell its European Ellipse PRO line in the US; the 5S series is the closest US equivalent, with 900W of continuous power, automatic voltage regulation (AVR) and an LCD display. It switches to battery in about 4ms, among the fastest in its class, and gives your NAS time to shut down cleanly thanks to the included USB monitoring software. Rated runtime of 12 minutes at half load.
We set up the 5S1500LCD under our NAS rack, replacing a basic power strip. Eaton does not sell its Ellipse PRO line in the US, so the 5S series is what American buyers actually find on Amazon, and it holds its own: the LCD screen shows load and remaining runtime in real time instead of leaving you guessing. During a deliberate outage test (breaker switched off under load), the switch to battery was effectively instant, well under the roughly 4ms Eaton advertises, without so much as a blink on the NAS side. The USB monitoring software correctly triggered a clean NAS shutdown a few minutes into the outage, exactly as intended. The fan is noticeably quieter than what we have measured on some rival brands in this class, a real plus for a home office. One honest downside: at full 900W load, runtime drops to about 2 minutes, so this unit is built for a clean shutdown window, not for riding out a long outage. Overall, a fast-switching, quiet, no-nonsense UPS, well suited to a NAS or router tucked under a desk or in a closet.
Eaton 5S550
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Power outage? The Eaton 5S550 switches your NAS or router to battery instantly, with 8 outlets and zero fan noise in normal operation.
- Power: 550VA / 330W
- Outlets: 8x NEMA 5-15R (4 battery-backed + 4 surge-only)
- Runtime: ≈12 min at half load, 1 min at full load
- Topology: Line-interactive, coax/data line protection
- 8 outlets, quiet operation, Eco-Control saves up to 30%
The Eaton 5S550 is an entry-level backup UPS built for fixed electronics that cannot tolerate even a brief power outage: a NAS, router or Starlink dish connected to a residential solar setup. Eaton does not sell its European Ellipse ECO line in the US; the 5S550 is the closest US equivalent, with 330W of continuous power across 8 NEMA 5-15R outlets. Line-interactive topology corrects minor sags without draining the battery. Rated runtime of 12 minutes at half load, 1 minute at full load.
We set up the 5S550 under our router and a small backup NAS. Eaton does not sell its Ellipse ECO line in the US, so the 5S550 is what American buyers actually find, and it does the job well: fan noise is a non-issue in normal operation, which matters for a unit sitting in an occupied home office. During a deliberate outage test, the switch to battery was instant, with no reboot on either the router or the NAS. The 8 outlets, split 4 battery-backed and 4 surge-only, are generous for this power class and make it easy to keep secondary gear like a monitor or a printer on surge protection alone. Runtime at full 330W load is short, about 1 minute, plenty for a clean shutdown trigger but not for riding out a long outage; at half load it stretches to a more comfortable 12 minutes. For a router, a modem, or a small standalone NAS, this is a sensible, no-frills pick.
Eaton 5S700
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Power outage? The Eaton 5S700 switches your NAS or home lab to battery in an instant, with 8 outlets and line-interactive voltage correction.
- Power: 700VA / 420W
- Outlets: 8x NEMA 5-15R (4 battery-backed + 4 surge-only)
- Runtime: ≈12 min at half load, 2 min at full load
- Topology: Line-interactive, coax/data line protection
- 8 outlets, line-interactive AVR, quiet operation
The Eaton 5S700 is a backup UPS built to protect a home lab or a NAS connected to a residential solar setup from power outages and surges. Eaton does not sell its European 3S line in the US; the 5S700 is the closest US equivalent, with 420W of continuous power across 8 NEMA 5-15R outlets. Line-interactive topology corrects sags without touching the battery. Rated runtime of 12 minutes at half load, 2 minutes at full load.
Fitted under our home network rack, the 5S700 keeps a NAS, switch and router running through short outages without a hitch. Eaton does not sell its European 3S line in the US, so the 5S700 is what American buyers actually find, and the 8-outlet layout, 4 battery-backed and 4 surge-only, makes it easy to fit several bulky power bricks without them fighting for space. During a deliberate outage test under load, the switch to battery was instant, with no NAS reboot and no dropped connection. Line-interactive AVR quietly corrected a couple of voltage sags during testing without ever touching the battery, a genuine plus over cheaper standby-only units. Runtime at full 420W load is short, about 2 minutes, just enough for a clean shutdown trigger; at half load it stretches to a more comfortable 12 minutes. For a small home lab, a solid outlet count and voltage regulation for the price.
Tecnoware Era Plus 650VA
$55.00
A budget UPS to protect a router, modem or camera? The Tecnoware Era Plus 650VA is silent and cheap, but currently not sold on the US market.
- Power: 650 VA / 455 W
- Runtime: 10 min PC, 30 min modem
- Outlets: 2 Schuko (EU standard)
- Noise: < 40 dB(A) at 1 m
- Silent AVR, low price, Schuko outlets (EU-only)
The Tecnoware Era Plus 650VA (FGCERAPL652SCH) is a budget line-interactive UPS built to protect a router, a modem, a CCTV camera or a small NAS from outages and surges. AVR Plus technology, fan-less silent operation, runtime rated up to 10 minutes with a PC and 30 minutes with a modem. It ships with 2 Schuko outlets, the continental European standard, not US wall outlets. Around $55 equivalent in Europe; not currently sold on the US market.
Widely sold as a budget line-interactive UPS across continental Europe, this small Tecnoware protects a router, a modem or a CCTV camera without fuss, exactly what you want at this price point. The AVR Plus soaks up small mains fluctuations without switching to battery, and the fan-less silent operation is genuine, not just a marketing line. The two outlets are Schuko sockets, the round two-pin standard used across most of continental Europe, not the NEMA 5-15R outlets used in the US, and no US-plug version is currently listed by any American retailer. There is also no USB port or monitoring software, so it cannot trigger an automatic clean shutdown of a PC on a longer outage. For a simple job, protecting a router, modem or camera on the continent, it does that job honestly at a hard-to-beat price.
