Oupes 1100 Review

My Quick Verdict

Three machines from this manufacturer now sit in our database sharing the same set of gaps: no automatic transfer function, an external charging brick, no app, and a solar input capped around 30 volts.

The Oupes 1100 is the smallest of them and repeats every one. It charges at 180 watts and takes over 5 hours to charge from empty.

Its output measures 110 volts, below the accepted band, and its conversion is the weakest of the three, at 81.6% for AC and 80% for DC.

There is no single catastrophic failure here. There is a pattern that runs across the brand.

Best for: Planned camp and workshop use, where the machine is charged overnight, and nothing depends on it being ready.

Not for: backup, motors, rigid solar panels, or anyone charging between uses.

Key Stats

Introduction

By the third machine from a manufacturer, patterns start to mean something. Two units sharing a flaw is a coincidence; three is a design philosophy.

Across the Oupes 600, 1100, and 1800, the same list repeats: no automatic transfer function, mains charging via an external brick, no app of any kind, and a solar input that cuts off around 30 volts.

This is the middle machine of that group, and it adds a 110-volt output and the weakest conversion figures of the three.

Cells are lithium iron phosphate, rated for 2,000 cycles under a two-year warranty.

What It Can Actually Run

Eleven hundred watts sustained with 2,200 in a burst. That runs a refrigerator with lighting and devices alongside, and stops short of any heating appliance.

Rated at 992 Wh, the sockets returned 810 Wh, 81.6% below the class line. Everything below uses 810Wh.

• Refrigerator at 150W: 5.5 hours.
• CPAP at 40W with the humidifier off: twenty hours.
• Starlink dish at 50W: sixteen hours.
• Laptop at 70W: about eleven charges, though slowly through a 60-watt port.

The output measured 110 volts, below the accepted working band. No electrical noise figure was recorded for this machine.

Charging and Smart Features

Wall input is 180 watts through an external charging brick at a single fixed rate. From empty, that is more than five hours.

Solar takes 161 watts across a 1- 30-volt window. That ceiling excludes most rigid panels entirely.

Dual charging is not supported, so mains and panels cannot run together.

There is no UPS mode and no app. Upper mid-range price tier, premium value tier.

Real Capacity: What You Actually Get

Both paths fall below the class line, which is unusual; most power stations we have reviewed are strong in at least one.

A meter, compared to pockets, recorded 810 Wh against a claimed 992 Wh. 81.6% means 182 watt-hours never reach you.

DC came back marginally lower at 794 Wh (80%), so there is no gain in moving loads there.

No standby loss was measured on either path, so its behaviour after months on a shelf is unknown.

By comparison, a 90% converter of the same size returns about 80 watt-hours more, or another half hour of refrigeration.

My takeaway: Build every calculation on 810Wh; with both routes this lossy, neither deserves preference. Budget five hours to replace it.

Power Output and Surge: What It Can Turn On

The inverter is 1,100 the capacity. 1,100 watts sustained runs a refrigerator, a television, and lighting together, and 2,200 watts of surge covers a compressor start with a comfortable 2x margin.

Doubling continuous output in a burst beats what many rivals of its size offer, and it is the best line on the sheet.

The voltage is the problem. One hundred and ten volts falls below the accepted band, so motors draw excess current, run hotter, and wear out faster over repeated cycles.

USB-C is another weak point: 60 watts, which is half of what most machines at this capacity provide, and too slow for any modern laptop.

No harmonic distortion or electrical noise figure exists for this machine, so output quality beyond voltage is unmeasured.

Real Appliance Runtimes

810Wh converted into hours, on the loads applied uniformly across this site.

These figures are respectable for the capacity. The difficulty is that replacing them takes more than five hours, so this is a machine you charge the night before rather than between uses.

Recharging: Wall and Solar

From a Wall Outlet

Charging a 992 Wh pack at 180 W takes more than five hours from empty, which is among the slowest charging rates we have measured.

Power comes via a brick outside the machine, an extra object to transport and eventually replace, and misplacing it ends mains charging.

No rate control is offered, so slow is all there is.

Dual charging is not supported either, so panels cannot shorten the wait. Both routes are slow, and they cannot be combined.

From Solar Panels

The solar input is the most restrictive part of the machine, and this pattern repeats across the brand.

One hundred and sixty-one watts across a 12 to 30 volt window. Both the wattage and the ceiling are low.

Anything rigid usually runs at over 30 volts, and the input ignores it, confining you to foldables in parallel.

One hundred and sixty-one watts pushing 992 Wh occupies most of a bright day, and the sheet confirms that panels alone miss the standard refill window.

The array can stay permanently connected, and pass-through charging is supported.

Blackout Backup: The Part I Care About Most

There is no automatic transfer function on this machine.

The grading entry records the UPS mode as not applicable, so anything plugged into the outlets loses power the instant the grid does.

This is the third Oupes machine in our database with the same gap, alongside the Oupes 600 and the Oupes 1800. Across all three, the brand treats these as batteries rather than backup systems.

That is a legitimate design position for camping and off-grid storage. It is worth knowing before you buy that it offers blackout protection.

Why this matters to me: with nothing to catch a failure, a five-hour refill, and no way to run both inputs, this is hardware you must set up beforehand. It cannot be relied on to react to anything.

Noise and Living With It

Fifty-two decibels under load, which is fair for this capacity and sits at the upper edge of what a room with a sleeper will tolerate.

That is quieter than several machines at this size and one of the better figures on the sheet.

Twenty-four pounds, 10.8 kilograms; fair for a kilowatt-hour, and liftable with one arm across a campsite.

There is no app of any kind and no expansion port. The cover lasts two years, with a promise to answer within a day.

Where It Falls Short

Five limitations, and four of them appear on every Oupes machine we have tested.

1. One Hundred and Eighty Watts Through an External Brick

Five hours and more from flat, at one unchangeable rate, reliant on a part that can go astray.

Contemporary power stations take this from a raw 940 to 1,350 watts with a built-in charger and are fully charged in roughly an hour.

2. No UPS Mode

Nothing catches the load when mains drop, so whatever is plugged in stops.

Shared with both other Oupes machines in our database.

3. A 30-Volt Solar Ceiling at 161 Watts

Rigid panels typically exceed 30 volts and go unrecognised, so parallel foldables are the only route left.

Nor will 161 watts fill the pack inside the standard window, and there is no dual charging to assist.

4. Output Measured 110 Volts

Under the accepted band, motors pull harder and heat up across repeated starts.

Heaters, lighting, and switching supplies are unaffected.

5. A 60-Watt USB-C Port, No App, and 81.6% Conversion

At 60 watts, it delivers half of what this class typically does, and no laptop charges quickly on it.

Wireless is entirely absent, and neither output route meets the standard this class is held to.

How It Compares

Two comparisons: the strongest all-rounder at this capacity, and its own larger sibling.

Setting this beside its own larger sibling shows the pattern clearly. Both charge through bricks, both lack a transfer function, both output 110 volts, both cap solar at 30 volts, and both fit 60-watt USB-C ports. The larger machine converts better; nothing else changes.

The Bluetti Elite 100 V2, with almost identical capacity, charges nearly 7 times faster, hands over in 8.7 milliseconds while arming, outputs the correct voltage, accepts 6 times the solar input, and includes an app.

The gap is wide, and the better machine costs about the same. There is no configuration in which the Oupes 1100 is the better buy.

Who Should Buy It, and Who Should Skip It

Buy It If

• It is heavily discounted, and you understand what it cannot do.
• You fill it the night before whenever it is needed.
• Nothing with a motor relies on it; your loads are heating elements or electronics.
• Your existing panels fold out under 30 volts and fit the window.

Skip It If

• Blackout protection is one of your reasons for buying.
• You need it full in less than five hours.
• You own or plan to buy rigid solar panels.
• Something modern at this size sits within your budget, and it does.

The Bottom Line

The Oupes 1100 is not a broken machine. Its inverter is well-sized, its surge margin is comfortable, it runs at a reasonable 52 decibels, and it weighs 24 pounds.

What it repeats is the pattern across every Oupes unit we have tested: an external charging brick, no transfer function, no app, a solar ceiling around 30 volts, and an output below 120.

In this capacity, the alternatives are strong and widely available. Buy this one only at a substantial discount, for planned use, charged the night before.