BLUETTI FridgePower: Fridge Backup Power for UK Homes

The BLUETTI FridgePower is a slim battery built to sit behind your fridge and take over when the mains fails. It stores 2,016Wh in LiFePO₄ cells, delivers 1,800W of continuous output with a 3,600W surge for the moment the compressor kicks back in, and switches over automatically in under 10ms¹. BLUETTI says it can keep a fridge running for up to 4 days during blackouts and severe weather when expanded to 8,064Wh².

For an ordinary household, the appeal is simple: no electrician, no fuel, no fumes. The maker's own two steps are to plug FridgePower into a wall outlet, then plug your fridge (or other essentials) into FridgePower³. It is designed for indoor use with no gas, fumes or fuel³.

This page sets out what the unit is, what it can run and for how long, how to charge it from the mains, solar or a vehicle, and how to place and use it safely indoors. It also covers the app alerts and voice control, and what the maker says about availability in the UK.

What the FridgePower is and who it suits

The FridgePower is what BLUETTI calls fridge-first backup power: a battery designed around one job, keeping the fridge cold, rather than a general-purpose power station you wheel out for camping³. Its 75mm slim design is meant to let it sit behind the fridge, where most households have unused depth, and the maker supplies mounting brackets, wall anchors and adjustable levelling feet so it can be fixed in place³.

BLUETTI lists the FridgePower Core as suited to campervans and flats³. That fits the shape of the product: it is thin, it runs quietly in Quiet Mode at around 30dB, which the maker compares to a whisper, and it needs no fuel or ventilation for exhaust¹. For a flat where a petrol generator is out of the question, or a campervan where space is tight, those are the qualities that matter.

It is not only a fridge battery. The maker says it has two standard AC outlets, so you can power appliances beyond fridges, such as fish tanks, security equipment and other kitchen appliances³. BLUETTI states it is compatible with 99.65% of household refrigerators, chest freezers, under-counter fridges, fish tanks, aquarium pumps and kitchen appliances². That is the maker's own compatibility claim, so check your own appliance's rating before you rely on it.

The unit is built with automotive-grade LiFePO₄ cells, and BLUETTI says this offers over 10 years of food security³. LiFePO₄ is the chemistry BLUETTI says it was one of the first to adopt in portable power stations⁴. The maker also states it has over 3.5 million users in 110+ countries and 1,000+ patents worldwide⁵.

Specifications

The figures below are the maker's own published specifications. Where a retailer lists a different figure, the maker's figure is the one to use.

The 3,600W surge figure is the one that matters for a fridge. A compressor draws a short burst of much higher power when it starts, and BLUETTI says the surge power handles the power surge when your fridge kicks back on¹. For the difference between running watts and surge watts, see Watts, Watt-Hours and Surge Explained.

The 4W idle draw is worth understanding. BLUETTI says this is 87% more efficient than comparable backup units, and quotes 0.3W standby power for remote wake and control¹. A low idle draw means less of the stored energy leaks away while the unit waits, so it holds its charge longer between top-ups.

How long it will run a fridge

BLUETTI says the FridgePower can deliver reliable refrigerator backup power for up to 4 days during blackouts and severe weather when expanded to 8,064Wh². On its own 2,016Wh capacity, the maker quotes 24+ hrs of fridge runtime³. The two figures are not directly comparable: one is the base unit, the other is the unit with expansion batteries added.

The maker also says you get up to 5 additional hours of fridge runtime on the same battery capacity¹. It states that runtime estimates are based on a typical modern full-size refrigerator (18-22 cu. ft.) under standard cycling, and that actual runtime will vary³. Treat every run time as an estimate for a typical fridge, not a promise for yours.

For scale, the independent Electrical Safety First guidance lists a freezer as using 200 watts⁶. That is a running figure, not a surge figure, and it is the kind of number you need to compare against the unit's 1,800W output.

Beyond the fridge, BLUETTI says the unit can run your Wi-Fi, TV, lights and other essentials for up to 3 days¹. That makes it a plausible whole-flat backup for a short outage, not just a food-preservation device. If you are deciding what to keep running first, see Deciding What to Keep Running When the Mains Fails.

Setting it up in about 5 minutes

BLUETTI describes the setup as plug-in fridge backup power with no electrician, and quotes 5 minutes¹. The maker's own two steps are to plug FridgePower into a wall outlet, then plug your fridge (or other essentials) into FridgePower³. There is no panel rewiring and no electrician visit, and the maker calls it totally DIY-friendly³.

The box contains the FridgePower Portable Power Station, one AC charging cable of 2.5 m (8.2 ft), four adjustable levelling feet, a handle strap, mounting brackets, six screws, five bracket mounting screws, six wall anchors, two screw washers and the documents³. The brackets and anchors are there so the unit can be fixed rather than left loose behind the fridge.

1. Place the unit behind or beside the fridge, using the adjustable levelling feet on an uneven floor³.
2. Fix the mounting brackets with the supplied screws and wall anchors if you want it secured³.
3. Plug the FridgePower into a wall outlet using the 2.5 m AC charging cable¹.
4. Plug the fridge into one of the two standard AC outlets on the FridgePower³.
5. Fit the detachable magnetic display where you can see it, and connect the app¹.

Switchover in under 10ms: how it takes over in a power cut

The FridgePower works as an uninterruptible power supply. BLUETTI says the UPS switches over automatically in under 10ms¹. In practice, the unit sits between the wall socket and the fridge, passes mains power through while the grid is up, and takes over from its battery when the mains drops.

That speed matters because a fridge compressor does not like a long gap in supply. A changeover in under 10ms is fast enough that the maker presents it as seamless. BLUETTI's wider product literature describes its power stations as equipped with a UPS function with a switchover time of 10ms or less⁷, and elsewhere describes a solar generator taking over the grid in just 0.02s⁸. Those are different products and different figures; for the FridgePower itself, the maker's figure is under 10ms¹.

The unit also anticipates outages. BLUETTI says it sniffs incoming outages and gets ready with its Extreme Weather Alert³. Combined with the app's local weather integration, the maker says it can automatically trigger fast charging before incoming storms, reaching full backup in about 80 minutes¹. That is the practical benefit: the battery tops itself up before the weather hits, rather than after the lights go out.

For how UPS switchover works across different power stations, see Using a Power Station as a UPS: Switchover Times.

Charging from the mains, solar or a vehicle

BLUETTI lists three charging routes for the FridgePower: AC, solar or vehicle power¹. The AC route uses the supplied 2.5 m cable and a wall socket². The maker says fast charging triggered before incoming storms can reach full backup in about 80 minutes¹.

For solar, the maker's wider guidance on expansion batteries lists four charging methods: solar panel, wall socket, car outlet and lead-acid battery⁹. If you are charging from a car, BLUETTI's camping guidance notes that you can charge from both your car and solar panels, powering your main storage and leisure battery while driving, with no drain on your reserve¹⁰. That is written for BLUETTI's portable power stations generally rather than the FridgePower specifically, so check the FridgePower's own input limits before connecting anything.

• Mains: plug into a wall outlet with the supplied 2.5 m cable; the maker quotes about 80 minutes to full backup when fast charging is triggered¹.
• Solar: the maker lists solar as a charging method; panel size and UK daylight decide how long it takes¹.
• Vehicle: the maker lists vehicle power as a charging method¹.

For panel sizing and realistic UK charging times, see What Size Solar Panel Do I Need to Charge a Power Station? and How Long Does Solar Charging Take in the UK?. For charging from a car, see Can You Charge a Power Station from Your Car?.

Indoor use only: safe placement and protection

BLUETTI states that the FridgePower is designed for indoor use with no gas, fumes or fuel³. That is the central safety point: unlike a petrol generator, it produces no exhaust, so it does not carry the carbon monoxide risk that makes generators an outdoor-only device. It should still be placed where it is ventilated and where the maker's temperature limits are met.

The unit carries a set of built-in protections. BLUETTI lists flame-retardant materials, a washable dust filter to maintain airflow, anti-slip support, intelligent battery protection systems and a detachable magnetic display for flexible monitoring¹. The dust filter is worth checking periodically, since a blocked filter behind a fridge is easy to forget.

The fire and rescue services give general advice that applies to any electrical kit in the home. The Northern Ireland Fire & Rescue Service says: "Only buy from reputable retailers. Ensure electrical equipment and chargers comply with the required safety standards."¹¹ That advice is repeated across NIFRS safety appeals¹². For the markings that show a charger meets UK standards, see UKCA, CE and Battery Safety Markings Explained.

For lithium battery safety more broadly, including warning signs and what to do if a battery swells or catches fire, see Lithium-Ion Battery Safety at Home.

App alerts, weather warnings and voice control

BLUETTI says the FridgePower sends real-time push notifications for power outages, low battery, full charge and system alerts¹. It also integrates local weather, which the maker says can automatically trigger fast charging before incoming storms, reaching full backup in about 80 minutes¹. The Extreme Weather Alert is the maker's name for the feature that gets the unit ready before an outage³.

Voice control is supported through Amazon Alexa, Google Home and Home Assistant². That lets you check status or trigger functions by voice, which is useful if the unit is tucked behind the fridge where you cannot easily see the display. The detachable magnetic display can be moved to somewhere more visible¹.

For a household that is out at work all day, the outage notification is the useful one: it tells you the fridge has lost mains power while you can still do something about it. For more on using power stations during an outage, see Using Generators and Power Stations During an Outage.

UK availability and what comes in the box

BLUETTI lists the FridgePower on its UK site. The maker states that it is launching FridgePower on crowdfunding because it is a brand-new type of fridge-first backup power, and that after the campaign it plans to expand availability through its official channels³. That means availability may change; check the maker's own page before ordering.

BLUETTI UK states free delivery and easy pickup on its orders¹⁴. The maker's box contents are listed above: the power station, the AC charging cable, four levelling feet, a handle strap, mounting brackets, screws, wall anchors, screw washers and documents³.

For the maker's wider range and background, see the BLUETTI brand page and Portable Power Stations: What They Do and How to Choose.

Where to get help and more guidance

If you are weighing up whether a fridge battery is the right backup for your household, the starting point is deciding what you need to keep running. Deciding What to Keep Running When the Mains Fails sets out how to rank the fridge, lighting, communications and medical equipment. What Capacity Power Station Do I Need? and How Long Will a Power Station Run a Fridge or Laptop? help you check the figures against your own appliances.

If you are comparing a battery with a fuel generator, Portable Power Station or Petrol Generator for a Power Cut sets the two side by side. For the wider picture, Backup Power at Home: A Household Guide and Power Cuts: A Household Guide cover what to do before, during and after an outage.

For safe charging and storage, see Safe Battery Charging at Home Checklist, How to Store a Power Station When Not in Use and What Temperature Should Batteries Be Stored At?. If you are preparing for winter, Backup Power Checks Before Winter and the Power Cut Backup Power Checklist give a step-by-step list.