HYXI Halo 5 plug-in AC-coupled micro ESS — a 5 kWh home battery with a built-in inverter
All Equipment Energy Storage — HYXI Halo 5

It works with the solar you already have.

A 5 kWh battery with a 2,500 W inverter inside it, in one plug-in case. It does not care who made your panels or your inverter — it sits alongside them and stores what they were exporting for nothing.

— What it is

A battery that retrofits.

The Halo 5 is AC-coupled, and that one word is the whole product. It connects on the alternating-current side of your installation rather than the direct-current side, so it needs no agreement with your existing inverter, no matching voltages and no DC work on the roof. Any solar system, any brand, any age.

Inside is 5,024 Wh of LiFePO4 and a 2,500 W bidirectional inverter, behind an IP66 case that weighs 42 kg. That 2,500 W is the difference between backing up the essentials and carrying on normally: a washing machine, a microwave and a kettle are all inside it.

Most Mauritian homes with solar are exporting their afternoon surplus and buying it back after dark. This is the smallest change that stops that happening — no re-engineering, no second roof visit, no re-doing the CEB paperwork on a system that already works.

Storage 5,024 Wh
Continuous output 2,500 W
Peak, 10 seconds 3,000 VA
Cycle life ≥ 10,000
Warranty 10 years
— Where it fits

Four situations it was made for.

Solar you already own

The commonest case on this island: panels fitted years ago, working fine, and every sunny afternoon their surplus goes out to the grid for a fraction of what you buy it back for. The Halo 5 keeps it.

A house that needs real power in a cut

2,500 W continuous, 3,000 VA for ten seconds. Not just the fridge and a lamp — the pump, the microwave, the washing machine you had already started.

No appetite for a second project

No DC work, no roof visit, no touching an installation that has been signed off and working. It plugs in beside what you have.

Somewhere the noise would matter

25 dB and cooled by nothing but its own fins. It can live in a hallway, a landing or a bedroom cupboard instead of being exiled outside.

— How it works

Three steps, and none of them touch your roof.

01

We look at what you have

Any inverter, any panel brand, any age — AC coupling means the Halo 5 does not have to agree with any of it. What we do check is your consumption pattern, because that decides whether 5 kWh is the right size or whether you want two.

02

It goes in beside your board

One AC connection. No DC, no roof, no re-commissioning the system you already have. Then the app: a six-step setup that takes about five minutes, and we do it with you rather than emailing you a manual.

03

It learns your week

The unit watches when you generate and when you spend, and shifts the surplus across that gap by itself. You get a light ring that reads the state of charge from across the room, and an app if you want the detail.

A HYXI Halo 5 installed beside an existing wall-mounted solar inverter in a home
— Retrofit

It does not have to agree with your inverter.

A DC-coupled battery has to be electrically compatible with the inverter it lives behind — the same voltage window, often the same manufacturer, sometimes the same model year. That is why so many quotations for "adding a battery" turn into quotations for replacing the whole system.

AC coupling side-steps the question. The Halo 5 has its own inverter, so it meets your installation at 230 V like any other appliance. Your existing system keeps running exactly as it was commissioned, and keeps its warranty.

— What it will run

Enough for the things that actually stop you.

The useful number is not the 5 kWh, it is the 2,500 W. Plenty of small batteries hold a reasonable amount of energy and can only release it slowly, which is why they run lights and a router and trip on a kettle.

2,500 W continuous carries a fridge, the lights, fans, a television and a washing machine at the same time, and 3,000 VA for ten seconds covers the surge when a motor starts. In practice that is the difference between a house that is "on backup" and a house where nobody notices.

Indicative, not a survey: what you actually get depends on your appliances and how long the cut lasts. We size it against your real load before quoting.

Diagram of typical household loads a 5 kWh battery will carry and for how long
A HYXI Halo 5 running silently in a living room at night, rated at 25 dB
— Living with it

Quiet, sealed, and rated for this climate.

IP66, 5–95 % humidity, and rated to +55 °C, with no fan and no filter — the two parts that fail first in a Mauritian summer. Hyxipower also rate it to −20 °C with self-heating, which is a specification this island will never test.

Five layers of protection over automotive-grade A+ cells, with an aerosol suppressant sealed inside the case. At 25 dB it is quieter than the fridge it is backing up.

— Technical specification

Every number, from the datasheet.

* The 2,500 W on-grid setting is a premium function: enabling it must comply with local regulations and may only be done by authorised personnel. Figures are from the Hyxipower HYX-MS5000AC datasheet V1.8 and are subject to change without notice.

— Questions

What people ask before buying one.

Will it work with my existing panels?

Almost certainly, and that is the point of it. AC coupling means the Halo 5 connects on the mains side rather than to your panels or your inverter, so brand, age and voltage do not have to match. We confirm it against your actual installation before quoting — but the answer is usually yes, and usually without touching the roof.

How is this different from the Halo PV?

The Halo PV has four solar inputs of its own, so it can generate as well as store — the right answer when there is no existing system, or none worth keeping. The Halo 5 has no PV inputs and more power: 5 kWh and 2,500 W against 3 kWh and 1,500 W. If you already have solar, this is the one.

Can I add a second one later?

The datasheet describes the Halo 5 as a single unit and documents no expansion pack, so we will not promise you one. What we would do instead is size the first one properly, and if a household genuinely needs more than 5 kWh we would look at a low-voltage stack rather than sell you something that cannot grow.

Can it run an air conditioner?

Yes, within 2,500 W. A 12,000 BTU inverter split settles at roughly 1,000–1,200 W and asks for more on start-up, which the 3,000 VA ten-second peak is there for. We check the start-up current of the actual unit rather than answer by category.

What happens when the grid comes back?

It changes over on its own and starts recharging from whatever is available — your panels first, the grid if there is nothing else. There is nothing to switch and nothing to reset.

Where should it go?

Indoors or under cover, on a flat floor, near the consumer unit. IP66 means rain and dust do not bother it, but shade and shelter extend the life of any battery in this climate. It is 42 kg, so it is a two-person lift and it stays where you put it.

Find out what it would save you.

Send us a recent CEB bill and, if you have solar already, roughly what it produces. We will tell you whether a Halo 5 pays for itself on your roof — and say so if it does not.

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