The description gives a figure nothing else on this shelf publishes: when the mains fails the unit switches to battery “in as little as 6 milliseconds”. That is the number that decides whether a desktop machine notices the outage at all, and across the seven units on this shelf it appears once.
The runtime comes in two halves, which is better than one. Up to 21 minutes at a 150 W load, stated in the second bullet — and over 100 minutes for low-power network devices like routers and modems, stated in the description. Two loads, two answers, which is how a runtime figure becomes useful: the same unit is a short reprieve for a computer and most of an evening for a router.
Nine hundred volt-amperes and five hundred and forty watts, a ratio of 0.60. Eight outlets, split six on battery and surge to two surge-only in the third bullet. And on the same bullet, the thing no other unit here has: a USB-C port and a USB-A port, sharing 5 V at 3 A. Fifteen amps of mains outlets and fifteen watts of phone charging, on a box that is already going to be on all the time.
The surge rating is 490 joules, in the description — the highest of the three published in this group, against 190 and 180. The fourth bullet names the replacement battery as the APC RBC17, sold separately, and calls the swap user-serviceable. Four of the seven units on this shelf name a replacement part number, and this is one of them.
The same bullet gives clear indicators and mutable audible alerts — the ability to silence the beeping being a small mercy on a unit sold for a home office. The fifth gives three years of warranty and $75,000 of equipment protection, the same terms as the smaller Back-UPS on this shelf.
What is thin is the pair the intro to this section puts first. The topology appears only once, in the description: a compact standby UPS, so the mains passes straight through and nothing regulates it. No output waveform, so the battery mode is unstated — and unlike the larger BX1350M on this shelf there is no note about actively corrected power supplies either, which is the case where a stepped waveform causes trouble. Shutdown is a single line in the description — compatibility with PowerChute Serial Shutdown — with no port or cable described. The USB sockets on the front charge telephones; they do not talk to a computer.
At $163.99 on October 26, 2026 it sat in the middle of this shelf by price — above the Tripp Lite AVR900U and the BE425M, below the other four — and the floor- or wall-mountable body takes a wall bracket as easily as a shelf.
Prices quoted in this text were read on October 26, 2026. The live price is at the top of the page.
Where it holds up, and where it stops
Strengths
The only listing on this shelf that publishes a transfer time — as little as 6 milliseconds to battery
Two runtime figures at two loads: 21 minutes at 150 W, and over 100 minutes for a router and a modem
USB-C and USB-A charging at 5 V and 3 A, which nothing else on this shelf offers
Four hundred and ninety joules, the highest surge rating published in this group
Names the replacement battery as the RBC17 and calls the swap user-serviceable
Audible alerts that can be muted, on a unit meant to live in a room someone works in
Compromises
The topology is named only in the description, as standby, so there is no voltage regulation
No output waveform, and no note about actively corrected power supplies either
Shutdown support is a single line — compatibility with PowerChute Serial Shutdown — with no cable or port described
No battery chemistry, voltage or capacity — only the part number of the replacement
Specifications
Topology
Standby — named in the description, which calls the BE900G3 a compact standby UPS; the title and bullets leave it out
Stated classification
Not published on the listing — no IEC classification and no VFD, VI or VFI designation appears anywhere
VA rating
900 VA — stated in the title and in the first bullet. It is the figure on the box rather than the load the unit will carry
Watt rating
540 W — stated in the title and in the first bullet alongside the VA figure, which puts the ratio at 0.60
Stated runtime at a named load
Published twice, at two loads — up to 21 minutes at 150 W in the second bullet, and over 100 minutes for low-power network devices such as routers and modems in the description. Two loads with two answers is the most useful form this figure takes, and no other listing on this shelf gives two
Output waveform
Not published on the listing — neither a sine wave nor a stepped approximation is named, and unlike the larger APC on this shelf there is no note about actively corrected power supplies either
Socket count
Eight, split — six with battery backup and surge protection, two surge-only, stated in the third bullet as well spaced. The same bullet adds a USB-C and a USB-A charging port sharing 5 V at 3 A
Socket type
NEMA, for a 120 V supply — implied by the market and never designated on the page, plus USB-C and USB-A for charging. Every other unit on this shelf has NEMA outlets for a 120 V wall, except the Eaton 5S700G with IEC C13 at 230 V
Battery type
Not published on the listing — no chemistry, no voltage and no capacity in ampere-hours appears. Only the replacement part number is given
Battery replaceability
User-replaceable, with the part named — the fourth bullet gives the APC RBC17 as the genuine replacement, sold separately, for a zero-downtime swap. Four units on this shelf name their cartridge; the BE425M, the Smart-UPS and the Eaton do not
Communication port
Not described — the description names compatibility with PowerChute Serial Shutdown for automated shutdown, and no data port or cable is named; the two USB sockets are for charging
Amazon reference
B0CNBBB3TR
EAN
0731304625377
On Amazon.com
Amazon.com had an offer at $164 on October 26, 2026.
Where this unit differs
Put against the median of its own group on this site — not against every network product sold.
Stated runtime at a named loadPublished twice, at two loads — up to 21 minutes at 150 W in the second bullet, and over 100 minutes for low-power network devices such as routers and modems in the description. Two loads with two answers is the most useful form this figure takes, and no other listing on this shelf gives two-55 % against the median of this group
Watt rating540 W — stated in the title and in the first bullet alongside the VA figure, which puts the ratio at 0.60+13 % against the median of this group
The questions that come up before an order
How quickly does it switch to battery?
As little as six milliseconds, stated in the description. It is the only transfer time published on this shelf.
How long will it run?
Twenty-one minutes at a 150 W load, and over 100 minutes for low-power network devices like a router and a modem. The two figures are in the second bullet and the description.
Can it shut my computer down automatically?
Not through the front sockets: the USB-C and USB-A ports charge devices at 5 V and 3 A and are not a data link. The description names compatibility with PowerChute Serial Shutdown and describes no port or cable for it. The Tripp Lite AVR900U and the Eaton publish a USB data port and shutdown software.
Against the rest of the network and storage gear
This network and storage gear share the category and the price bracket. Only what each one states is shown; an incomplete column would mislead.
Model
Price
Topology
Stated classification
VA rating
Watt rating
APC BE900G3, a 6 ms transfer time and USB-C charging on the front
$164
Standby — named in the description, which calls the BE900G3 a compact standby UPS; the title and bullets leave it out
Not published on the listing — no IEC classification and no VFD, VI or VFI designation appears anywhere
900 VA — stated in the title and in the first bullet. It is the figure on the box rather than the load the unit will carry
540 W — stated in the title and in the first bullet alongside the VA figure, which puts the ratio at 0.60
Standby — stated in the description as a standby UPS system. The mains passes straight through and the unit intervenes only on failure, so there is no voltage regulation. The APC BE900G3 is the other standby unit named as such on this shelf
Not published on the listing — no IEC classification and no VFD, VI or VFI designation appears, although the standby topology describes the same behavior
850 VA — stated in the title and in the first bullet
450 W — stated in the title and in the first bullet, which puts the ratio at 0.53
Line-interactive — stated in the description as a line-interactive UPS system with AVR protection. The Smart-UPS and the Eaton 5S700G on this shelf are line-interactive too
Not published on the listing — no IEC classification and no VFD, VI or VFI designation appears, although the line-interactive topology and the AVR window together describe the same behavior
900 VA — stated in the title and in the first bullet
480 W — stated in the title and in the description, which puts the ratio at 0.53 — the lowest in this group, shared with the other Tripp Lite unit on this shelf. The watt figure bounds the load sooner than the VA figure suggests
Line-interactive — stated in the title and in the first bullet, which is the topology that makes voltage regulation possible. The Smart-UPS and the Tripp Lite AVR900U on this shelf are line-interactive too
Not published on the listing — no IEC classification and no VFD, VI or VFI designation appears, although the line-interactive topology and the published window describe the behavior
700 VA — stated in the title and in the first bullet
420 W — stated in the title and in the first bullet, which puts the ratio at 0.60
What separates the models, in network and storage gear
If price decides: Tripp Lite AVR900U, two waveforms for two modes and a USB cable in the box, at $150.
Highest VA rating in the table: Tripp Lite AVR900U, two waveforms for two modes and a USB cable in the box (900 VA — stated in the title and in the first bullet).
Highest Watt rating in the table: this model (540 W — stated in the title and in the first bullet alongside the VA figure, which puts the ratio at 0.60).
This model holds the table’s highest figure for Watt rating.
The buyer this one serves, among network and storage gear
A desktop machine and a router on the same unit, where the six-millisecond transfer and the two runtime figures are what the money is for.
What this one costs among network and storage gear
Details checked on October 26, 2026.
What buyers actually choose
Amazon reports what buyers took in the month before this page was last checked: at least 50.
The figure is a floor, rounded by Amazon, and read through Keepa — it says what buyers picked, not what a maker claims.
Sources
Specifications: the manufacturer sheet for network and storage gear and the matching Amazon product page. Prices and availability: Keepa. Every figure on this page names its source.
topology not published · 1350 VA and 810 W · over 54 minutes at 100 W · ten NEMA outlets, five on battery · coaxial and Ethernet surge protection · AVR from 88 V, ±13 per cent · ENERGY STAR at 92 per cent · battery APCRBC123 named
The longest runtime on this shelf at over fifty-four minutes, the only efficiency figure here, and the only listing that names compatibility with an actively corrected power supply.
Best for: A desk that has to keep working through an outage rather than shut down during one, with an actively corrected power supply in the computer.
line-interactive · 1500 VA and 900 W pure sine wave · runtime not published · six NEMA 5-15R out, NEMA 5-15P in · 2U rack with rails · cloud portal with notifications and firmware · 2 years plus 2 years battery plus 1 more if registered · $150,000 cover
The only rackmount unit on this shelf, publishing a pure sine wave, its input plug as well as its outputs, and a warranty split three ways — on a page whose cloud service is free for six months in one place and two years in another.
Best for: A cabinet that already holds the switch and the network drive, where the rails, the sine wave and the remote firmware are the reasons to spend four times the money.
topology not published · 425 VA and 255 W · 15 minutes at 100 W · waveform not published · six NEMA outlets, four on battery · 180 joules · building wiring fault indicator · three years and $75,000 cover
The lowest price on this shelf, with a runtime at a named load, a joule rating and a lamp that warns about the wiring in the wall — and neither its topology nor its waveform.
Best for: A router and a modem in a flat where the socket is somebody else’s work and the wiring lamp earns its keep.
