VA and watts are two ratings, and the smaller one is the real one · review

Green Cell PowerProof 2000 VA / 1200 W, 2–6 ms transfer, IEC outlets review

A 2000 VA UPS rated 1200 W with a published transfer time of 2 to 6 milliseconds, an LCD display and two 12 V 9 Ah batteries named in the listing.

By Jean-Benoit Buisson

The bottom line The largest UPS here, and one of two to publish a transfer time — given honestly as a range. Naming the batteries by size makes it repairable. It publishes no runtime and no topology.

A 2000 VA UPS with the two facts that decide its useful life.

The transfer time

2 to 6 ms, published as a range. That is the figure that decides whether a computer restarts, and it is given as a span rather than a flattering minimum. Four of six UPS units in this family publish nothing here.

The batteries, identified

2× 12 V 9 Ah. A standard sealed lead-acid size, available from many suppliers. In three or four years, when the batteries are tired, that identification is the difference between a re-cell and a replacement.

The connectors

IEC. A computer’s kettle lead plugs straight in; a Schuko appliance plug does not without an adapter. That narrows the unit to computers and network equipment, which is what it is for.

The lines this listing leaves blank

Runtime — not even against a named load, which the cheapest UPS in this family manages. And the topology, though a 2–6 ms transfer rules out a true online architecture.

Availability

German, French, Italian and Spanish Amazon stores quoted 169 € to 214 € when this page was compiled.

British Amazon catalogue carries an entry for it, with nobody selling.

American Amazon store returned nothing at all, so the buy button there runs a search instead of landing on an empty page.

These figures are what Keepa reported on the day this page was last updated. Availability and pricing move without notice.

Prices quoted in this text were read on 16 September 2026. The live price is at the top of the page.

What it gets right, and what it leaves out

Strengths

A transfer time is published as a range — 2 to 6 ms — which is the honest form
The batteries are identified by voltage and capacity, so replacements can be sourced
An LCD showing input and output voltages as well as battery state

Compromises

IEC outlets mean a computer’s own cable fits but an appliance plug does not
No runtime figure at all, despite the batteries being named
No topology, though a 2–6 ms transfer suggests line-interactive or off-line rather than online

Specifications

VA	2000 VA, from the title — the largest in this family
Watt ratings	1200 W, from the title
Topology	Nowhere in the listing
Waveform	Nowhere in the listing
Transfer time	2 to 6 ms, third bullet — one of two published in this family, and the only one given as a range
Runtime	Absent as a figure; the fourth bullet describes an adequate time without stating one
Outlets	IEC connectors, from the title
Software	Absent as a name; an LCD shows operating status, battery state and input and output voltages, second bullet
Battery replaceability	Absent as a statement; the batteries are named as 2× 12 V 9 Ah, fourth bullet
Amazon reference	B0FQ5MY6R9 (same reference on 5 Amazon marketplaces)
EAN	5904326375628

Questions owners ask about this one

Is 2 to 6 ms fast enough?

For most computer power supplies, yes — they hold up through interruptions of that order. It is not zero, so equipment with no ride-through tolerance may still notice. Publishing a range rather than a single best-case figure is the more useful form.

Why does naming the batteries help?

2× 12 V 9 Ah is a standard sealed lead-acid size available from many suppliers. A UPS whose batteries are identified can be re-celled in a few years for a fraction of its price; one whose are not usually cannot.