5 Best Battery Backup for Refrigerators in 2025

What’s the first thing that comes to mind when you think about what could go wrong in a power outage? 

If you said “lights out,” you’re not alone — that’s why we call it a blackout.

Many people’s second most immediate concern—if not the first—is, “What will happen to the food in my fridge or freezer?” 

If you’re concerned about the increase in extreme weather events, aging grid infrastructure, and extended power outages, purchasing battery backup for your refrigerator and other essential appliances is one of the best ways to increase home energy security.

You can even slash your electricity bills in the process.

But only if you choose the right battery backup solution for high-wattage home appliances.

Ready to learn more?

Read on to find out. 

EcoFlow’s Top Battery Backup Systems for Fridges

1. Best for Essential Home Backup: EcoFlow DELTA 3
2. Best for Affordable Home-Integrated Backup: EcoFlow DELTA 2 Max
3. Best for Whole-Home Backup:  EcoFlow DELTA Pro 3
4. Best for High-Demand Backup and Off-Grid: EcoFlow DELTA Pro Ultra
5. Best for Renewable Backup: EcoFlow DELTA Pro 3 Solar Generator (PV400W)

Best for Essential Home Backup: EcoFlow DELTA 3

If you need to back up only a handful of essential appliances—including your refrigerator—EcoFlow DELTA 3 is an excellent and affordable choice.

Unlike many portable power stations, it also offers a true <10ms uninterruptible power supply (UPS) — up to data center standards (NAS) — to protect your home office computer, hard drives, and other sensitive electronics. 

Many battery backup manufacturers claim to provide UPS auto-switchover, but the actual time it takes is 20 milliseconds or more — almost imperceptible but more than long enough to damage precision devices and corrupt your data storage permanently.

With 1800W of AC output (3600W surge) DELTA 3 can actually operate multiple home appliances simultaneously with a combined running wattage of 2600W plus, thanks to proprietary X-Boost technology. 

Like all EcoFlow portable power stations, DELTA 3 offers multiple charging options, including AC wall plugs, solar panels, car charging, and more. 

Back up your fridge and other appliances for even longer between charges by adding the EcoFlow DELTA 3 Extra battery.

Depending on your fridge’s electricity requirements, DELTA 3 + Extra Battery (1kWh) can run it for days in a power outage. 

EcoFlow DELTA 3 Specifications

• Storage Capacity (Minimum): 1024Wh
• Storage Capacity (Maximum): 5kWh
• AC Output (Maximum): 1800W total (X-Boost: 2200W, Surge 3600W)
• AC Output (Maximum): Delete for D3
• Solar Charge Capacity (Maximum): 2 ports, DC Charge Input, 11V-60V 500W Max
• Weight: 27.6 lbs (12.5 kg)
• Dimensions: 15.7 x 8 x 11.2 in (39.8 x .20.2 x 283.6 cm)
• Operating Noise Level: 600W<30db;1200W<40db
• Charging Options: Solar/AC/Car/Smart Generator 3000 (Dual Fuel)
• Multi-Charge Options? Yes
• Battery Chemistry: Lithium Iron Phosphate (LFP/LiFePO4)
• Cycle Life: 4000 Cycles to +/-80% Capacity
• Depth of Discharge: 100%
• Warranty: Five years (no cycle life restrictions) 
• App Monitoring and Control? Yes

Pros

• Expandable up to 5kWh of battery storage
• Most lightweight and compact option for essential home backup
• Ideal for extended camping trips and off-grid adventures
• Recharge from 0-100% in 56 minutes
• Whisper-quiet operation (~30dB)
• 100% safe for indoor use

Cons

• AC output is not expandable (Max 1800W/2600W X-Boost/3200W surge)
• Insufficient power to run multiple high-wattage appliances at once

Best for Affordable Home-Integrated Backup: EcoFlow DELTA 2 Max

Many portable power stations require you to plug your fridge and other appliances directly into the unit. 

Depending on the layout of your home, it may be inconvenient to connect other essential appliances besides your refrigerator to a portable power station.

For example, unless you’re living in a small apartment, it’s unlikely that your home office setup is in the kitchen with your fridge.

Rather than running multiple extension cords from room to room, many people choose to integrate battery backup with their home wiring using a transfer switch.

With EcoFlow DELTA 2 Max + Transfer Switch you can connect up to 6 x dedicated circuits on your home circuit board directly to battery backup.

For example, if your existing wiring is configured as follows…

• Circuit Breaker 1: Refrigerator
• Circuit Breaker 2: Additional kitchen appliances
• Circuit Breaker 3: Home office equipment (computer, hard drives, etc.)
• Circuit Breaker 4: Entertainment system (Television, gaming console, home theater system, satellite router, etc.)
• Circuit Breaker 5: Common area lighting

You can run all of the above and still have one circuit open as long as you don’t exceed the maximum load per breaker or the maximum AC output of the DELTA 2 Max.

Installing a transfer switch next to your indoor home circuit board is an easy job for a licensed electrician, but don’t try to do it yourself.

Working with high voltage can cause serious injury or death, and faulty wiring could endanger your home and family.

Keep in mind, EcoFlow DELTA 2 Max works with a manual transfer switch.

You’ll need to make your way to the panel and flip the switch to engage the battery backup or solar generator during a blackout.

If you’re looking for automatic backup and home energy monitoring with an advanced solution like EcoFlow Smart Home Panel 2, check out the higher capacity DELTA Pro 3 or DELTA Pro Ultra — coming up next. 

EcoFlow DELTA 2 Max  Specifications

• Storage Capacity (Minimum): 2048 Wh
• Storage Capacity (Maximum): 6kWh
• AC Output (Maximum): 2.4kW continuous output (3.4kW surge)
• Solar Charge Capacity (Maximum): 11-60V 15A, single port 500W; dual port 1kW
• Weight: 50.7 lbs  (23 kg)
• Dimensions: 19.6 × 9.5 × 12 in (49.7 × 24.2 × 30.5 cm)
• Operating Noise Level: ~50 decibels
• Charging Options: Solar/AC/Car Charger
• Multicharge Options? Yes
• Battery Chemistry: Lithium Iron Phosphate (LFP/LiFePO4)
• Cycle Life: 3000 Cycles to +/-80% Capacity
• Depth of Discharge: 100%
• Warranty: Five years (no cycle life restrictions)
• App Monitoring and Control? Yes

Pros

• Affordable integration with home wiring
• Expandable capacity — up to 6kWh
• Charge 1kWh by driving for +/- 80 minutes with EcoFlow 800W Alternator Charger — ideal for extended road trips
• Powers 99% of high-wattage home appliances
• Up to 10 years of daily use with industry-leading LiFePO4 battery technology (before capacity diminishes by ~20%)

Cons

• Maximum AC output of 2400W (4800W Surge) may be insufficient to run multiple high-wattage appliances at the same time with your refrigerator
• Only compatible with manual transfer switch, not EcoFlow Smart Home Panel 2

Best for Whole-Home Backup: EcoFlow DELTA Pro 3

EcoFlow DELTA Pro 3 is an ideal whole-house backup solution for the average American home.

According to the most recent Residential Energy Consumer Survey (RECS), the average US residence is 1,818 sq. ft. and consumes 10,566kWh of electricity per year, or about 30kWh per day.

At close to that level of consumption, the sweet spot for AC output from battery backup or a generator is between 5kW and 10 kilowatts.

EcoFlow DELTA Pro 3 provides 4kW of AC output (8kW surge) and can operate up to 6kW of appliances simultaneously.

For most homes and apartments with 2-4 occupants, that should be enough to operate all your kitchen appliances — including a fridge — home office, and home entertainment systems.

Learn how to calculate electricity consumption here.

But what if it turns out 5 kilowatts is not enough to power your home?

Unlike many standalone battery backups and generators, DELTA Pro 3 allows you to connect up to 3 units in parallel, offering you the following configurations.

• 1 x DELTA Pro 3: 4kW (6kW X-Boost/8kW Surge) (120/240V)
• 2 x DELTA Pro 3: 8kW (12kW X-Boost/16kW Surge (120/240V)
• 2 x DELTA Pro 3: 12kW (18kW X-Boost/24kW Surge (120/240V)

Scalable AC output can be a lifesaver if you underestimate your electricity needs or your consumption increases over time.

Each DELTA Pro 3 is expandable to 12kWh per unit or 36kWh battery backup.

You also have the option to connect an inverter generator like EcoFlow Smart Generator 4000 and Smart Home Panel 2 for additional home energy security, monitoring, and control.

If you’re looking for off-grid backup for several days during an outage, EcoFlow DELTA Pro 3 is an ideal place to start.

EcoFlow DELTA Pro 3 Specifications

• Storage Capacity (Minimum): 4kWh per Battery. Up to 3 Batteries per DP3 (12kWh)
• Storage Capacity (Maximum): 36kWh (Battery Storage) + 12kWh with a full Smart Generator 4000 (Dual Fuel) = 48kWh
• AC Output (Maximum): 4kW (6kW X-Boost/8kW Surge) (120/240V)
• AC Output (Maximum): Expandable to 8kW or 12kW by chaining 2 or 3 x DELTA Pro 3 
• Solar Charge Capacity (Maximum): 2600W Dual-PV Charging (150V) per DP3
• Weight: 115 lbs (52kg)
• Dimensions: 27.5 × 13.5 × 16 in (69.5 × 34 × 41 cm)
• Operating Noise Level: 35 decibels
• Charging Options: Smart Home Panel 2 (7200W) / AC (3600W) / Dual Solar Input (2600W) / EV Charging (4000W) / Gas Generator (3200W) / Alternator Charging / Car Adapter Charging
• Multicharge Options? Yes – 18 Options
• Battery Chemistry: Lithium Iron Phosphate (LFP/LiFePO4)
• Cycle Life: 4000 Cycles to +/-80% Capacity (11+ years of regular use)
• Depth of Discharge: 100%
• Warranty: Five years (no cycle life restrictions)
• App Monitoring and Control? Yes

Pros

• Highly expandable AC output, battery storage, and solar charge input
• 7 fast charging methods
• IP65 rated for sheltered outdoor and indoor use
• 10 ms UPS protects sensitive electronics like computers and hard drive
• Exceptionally quiet operation

• Supports integration with home wiring for automatic switchover yet compact enough for portable use

Cons

• AC output may be insufficient for backing larger-than-average homes with multiple occupants using HVAC systems
• Must be charged every 2-3 days when operating off-grid without connection to solar panels or other charging methods

Best for High-Demand Backup and Off-Grid: EcoFlow DELTA Pro Ultra

If you have a larger-than-average household or are looking to go completely grid-independent, EcoFlow DELTA Pro Ultra is the ultimate whole-home generator solution.

If you only want to back up a handful of high-wattage appliances — including a fridge and freezer — DELTA Pro Ultra is probably overkill.

However, it’s the perfect choice if you want extended backup for your whole house, including heating and/or air conditioning (HVAC) systems.

DELTA Pro Ultra is EcoFlow’s most powerful and expandable home backup system.

You can connect up to 42 x 400W solar panels and take your home completely off-grid…

Or integrate with your home circuit board using EcoFlow Smart Home Panel 2 for seamless integration with your existing wiring.

Program DELTA Pro Ultra to draw on-grid power only when absolutely necessary and avoid all energy demand charges.

With expandable capacity up to 90kWh of LFP battery storage and 21.6kW of AC output with 3 x DELTA Pro Ultra Inverters, you can operate your entire home for up to a month during a power outage.

EcoFlow DELTA Pro Ultra Charging Inputs

Charging Method	Maximum Input (1 x Inverter)	Maximum Input (2 x Inverter)	Maximum Input (3 x Inverter)
Solar Charging	5600W	11200W	16800W
AC Input (Wall Socket)	3000W	6000W	9000W
AC Input Smart Home Panel 2 (Wired)	7200W	14400W	21600W
AC Input EV Pile (Wired)	7200W	14400W	21600W
Fossil Fuel Generator (Cable)	7200W	14400W	21600W
EcoFlow Smart Generator (Dual Fuel)	1800W	3600W	5400W
Multicharge	8800W	17600W	26400W

Or indefinitely with alternative charging methods like solar panels and gas generators.

Look no further for true home energy security.

And unlike standby generators that run on natural gas or other fossil fuels, EcoFlow DELTA Pro Ultra is eligible for the 30% Federal Solar Tax Credit, with or without solar panels.  

Thanks to the Residential Clean Energy Credit, US taxpayers can claim 30% of the total purchase and installation cost of eligible home battery backup systems and solar panels as a credit against their federal income tax liability.

The credit applies to new clean energy purchases and installations at a homeowner’s primary or secondary residence within the United States. 

Even if you finance the purchase over time, you should still be eligible for the credit.

Taking full advantage of federal, state, and local government incentives helps you achieve payback faster and maximizes your return on investment.

EcoFlow DELTA Pro Ultra Specifications

• Storage Capacity (Minimum): 6kWh
• Storage Capacity (Maximum): 90kWh
• AC Output (Maximum): 7.2kW continuous output and 10.8kW peak output for 10 seconds. 
• AC Output (Maximum): AC output expandable up to 21.6kW with three inverters connected.
• Solar Charge Capacity (Maximum): 1 × Inverter: 5.6kW | 2 × Inverters: 11.2kW | 3 × Inverters: 16.8kW (Max)
• Weight: Inverter: 70 lbs (32.7kg); Battery: 116.4 lbs (52.8kg)
• Dimensions: Inverter: 27.2 x 18.9 x 8.4 in (69.1 x 48 x 21.3 cm); Battery: 26 x 18 x 8 in (66. x 45.7 x 20.3 cm)
• Operating Noise Level: ~50 decibels
• Charging Options: Solar/AC/Car Charger/Smart Home Panel 2/EV Charge Station/Smart Generator (Dual Fuel)
• Multicharge Options? Yes
• Battery Chemistry: Lithium Iron Phosphate (LFP/LiFePO4)
• Cycle Life: 3000 Cycles to +/-80% Capacity
• Depth of Discharge: 100%
• Warranty: Five years (no cycle life restrictions)
• App Monitoring and Control? Yes

Pros

• Reliable whole-home backup during extended power outage
• Options to go fully off-grid
• Clean energy credit eligibility can save you 30% on purchase and installation costs
• Modular and highly expandable

Cons

• Too heavy/bulky for some portable applications
• Could be overkill for apartments and small homes

Best for Renewable Backup: EcoFlow DELTA Pro 3 Solar Generator (PV400W)

Like all of EcoFlow’s portable power stations, EcoFlow DELTA Pro 3 supports solar panel charging.

If you’re interested in embracing renewable energy to reduce your carbon footprint and electricity bills by 75% or more, EcoFlow’s DELTA Pro 3 Solar Generator (PV400W)  is an excellent place to start.

We’ve already covered the benefits of the DELTA Pro 3 portable power station above.

The solar generator is DELTA Pro 3 bundled with 1 or 2 x EcoFlow 400W portable solar panels at an unbeatable price.

Each DELTA Pro 3 supports 2600W of solar input with dual PV ports.

You can connect up to 3 x DELTA Pro 3s for a total solar charge input of 7800W.

EcoFlow DELTA Pro 3 Specifications

• Storage Capacity (Minimum): 4kWh per Battery. Up to 3 Batteries per DP3 (12kWh)
• Storage Capacity (Maximum): 36kWh (Battery Storage) + 12kWh with a full Smart Generator 4000 (Dual Fuel) = 48kWh
• AC Output (Maximum): 4kW (6kW X-Boost/8kW Surge) (120/240V)
• AC Output (Maximum): Expandable to 8kW or 12kW by chaining 2 or 3 x DELTA Pro 3 
• Solar Charge Capacity (Maximum): 2600W Dual-PV Charging (150V) per DP3
• Weight: 115 lbs (52kg)
• Dimensions: 27.5 × 13.5 × 16 in (69.5 × 34 × 41 cm)
• Operating Noise Level: 35 decibels
• Charging Options: Smart Home Panel 2 (7200W) / AC (3600W) / Dual Solar Input (2600W) / EV Charging (4000W) / Gas Generator (3200W) / Alternator Charging / Car Adapter Charging
• Multicharge Options? Yes – 18 Options
• Battery Chemistry: Lithium Iron Phosphate (LFP/LiFePO4)
• Cycle Life: 4000 Cycles to +/-80% Capacity (11+ years of regular use)
• Depth of Discharge: 100%
• Warranty: Five years (no cycle life restrictions)
• App Monitoring and Control? Yes

 EcoFlow 400W Portable Solar Panel Specifications

• Rated Power: 400W
• Efficiency: 22.6 %
• Solar Cell Type: Monocrystalline Silicon
• Weight: 35.3 lbs (16.0 KG)
• Folded Dimensions: 41.7×24.4×1.0 in (105.8×62.0×2.5 cm)
• Unfolded Dimensions: 41.7×93,1×1.0 in (105.8×236.5×2.5 cm)
• Waterproof/Dustproof Rating: IP68
• Open Circuit Voltage: 48V (Vmp 41V)
• Short Circuit Current: 11A (lmp 9.8 A)
• Recommended Portable Power Station: EcoFlow DELTA Series

Can a Battery Backup Run a Refrigerator?

EcoFlow’s DELTA Series portable power stations boast enough AC output and battery backup storage to run a refrigerator.

However, many smaller power banks and UPS devices lack sufficient output wattage and storage to operate a fridge — or at least not for long.

The starting and running wattage required to operate a fridge varies significantly based on several factors, including:

• Size
• Age
• Top, bottom, or side freezer compartment
• Is an icemaker/water cooling system included?

Learn how many watts you need to run your refrigerator here.

What Size Battery Backup Do I Need for a Refrigerator? 

Sizing battery backup for high-wattage appliances like refrigerators and freezers can be a challenge.

Unlike a lightbulb, for example, fridges and freezers aren’t simply on or off, and there are almost endless variations in how much electricity they consume based on model, manufacturer, and numerous other factors. 

For example, refrigeration and freezer technology has improved significantly in recent years, particularly if you purchase an EnergyStar-rated fridge. 

If your fridge is more than 20 years old, it’s probably cheaper to buy a new, more energy-efficient model than continue using the old one.

EnergyStar.gov has a handy calculator to help you determine if it’s time to flip your fridge.

Estimating how much electricity a fridge consumes — in watt-hours/kilowatt-hours (kWh) is essential because it determines what size battery you need to back up your refrigerator for the desired length of time. 

Unfortunately, it’s not as straightforward as it is with many other high-wattage appliances, primarily because most modern refrigerators cycle on and off multiple times a day or even an hour based on their thermostat settings and the temperature inside the fridge.

Power cycling makes fridges more energy efficient but also more unpredictable in terms of how much electricity they consume over time.

Some of the factors that impact electricity consumption include:

• Ambient temperature outside the fridge
• How empty or full it is
• The number of times the fridge or freezer door is opened
• Storing hot food or drinks in the fridge

If you want a highly accurate measure of how much electricity your fridge consumes during day-to-day use, consider purchasing a power meter.

Power meters are inexpensive and widely available in hardware stores or online. 

Simply plug your fridge into the meter and the meter into the wall outlet. Depending on the type of meter you purchase, it will track actual electricity consumption over time and give you a highly accurate picture of your hourly, daily, or weekly use.

Once you know how many kWh your fridge consumes per hour or day, you can accurately determine how much battery backup storage you need to run the appliance for your chosen number of hours or days during a power outage.

If you don’t want to go to the trouble, it’s safe to assume that your fridge will consume less power than its operating wattage per hour, as indicated on the manufacturer’s label or website.

Depending on your usage patterns and refrigerator model, it’s likely to consume much less.

Why Do I Need a Battery Backup for a Refrigerator?

If you lived in a perfect world where utility grid power was 100% reliable, a battery backup for your refrigerator would be unnecessary — unless you’re looking to reduce your electricity bills.

Unfortunately, 100% uptime is not a reality for electricity consumers in the US.

Thanks to various factors, including:

• Increased extreme weather events like heatwaves, wildfires, hurricanes, and floods
• Aging power grid infrastructure
• Demand overwhelming supply

Utility grid power in many parts of the country is far less dependable than it was even a decade ago.

 If you’re like many people concerned about home energy security and looking to reduce dependence on the power grid, battery backup is an affordable way to ensure essential appliances keep running during a blackout.

For many consumers, refrigerators and freezers are one of the first things they worry about before or during a power outage — and for good reason.

Fridges and freezers don’t “run” constantly, but they require a continuous source of electricity to function as designed.

You can take steps to keep a fridge cold without power, but these are temporary measures at best.

Here are the main reasons you need a battery backup for your fridge/freezer.

(Source: USDA)

1. Prevent Food Spoilage and Waste

Depending on how much food — particularly meat — you keep in your fridge or freezer, an extended power outage can carry a heavy cost. Many things we keep refrigerated quickly spoil and must be discarded after relatively brief exposure to room-temperature heat. If you purchase meat or other perishable items in bulk, even a few hours without refrigeration can cost you more than purchasing a battery backup to keep your food safe.   

2. Convenience
   Blackouts are stressful enough without worrying about having enough food to eat. It’s smart emergency preparation to always have non-perishable items like canned goods on hand, but who wants to eat out of a tin for days on end? Battery backup helps ensure your family has enough food to eat and cold beverages to drink without needing to seek out a store with power during a blackout.
   
3. Food Safety

Many people seriously overestimate how long food remains safe when it’s not in the fridge.
The Centers for Disease Control (CDC) estimates that “48 million people get sick, 128,000 are hospitalized, and 3,000 die from foodborne diseases each year in the United States.” You’ll have enough to worry about during a power outage without dealing with your family getting sick.

(Source: Verisk)

4. Food Security

Access to food is becoming less secure worldwide, including in the US. Supply chains are less resilient and nationwide power outages are becoming more likely. You may feel powerless to influence the forces behind food insecurity, but you can keep your family’s fuel supply more secure by having adequate battery backup.

5. Electricity Bill Savings

Last but not least, intelligent battery backup solutions like EcoFlow’s portable power stations can help you reduce electricity consumption by up to 75% (or more) and decrease your reliance on the grid. To achieve that level of savings, you’ll need to invest in solar panels as an alternative renewable energy source. But you can save a significant amount of money on electricity bills with a portable power station alone by avoiding Time-of-Use rates (ToU).

Virtually all utility grid electricity providers and power companies charge daily or seasonal electricity demand rates. Essentially, that means you’re charged a higher rate for electricity consumption per kWh at specific times of the day, month, or year.

Peak demand hours vary significantly by provider and location, but you can almost always save money by using more power during off-peak hours and less (or none) during on-peak.

EcoFlow’s portable power stations are easily programmable to switch to battery backup at any time of the day or night with the EcoFlow App on your smartphone from anywhere with an internet connection.

For example, if you plug your fridge directly into EcoFlow DELTA 3 and keep the portable power station plugged in, you can set it to charge the backup battery from the grid during off-peak hours and auto-switchover to battery power during on-peak billing times.

If you opt for EcoFlow DELTA Pro 3 and Smart Home Panel 2, you can do the same for up to X home circuits.

Depending on how your electricity provider bills you, the savings can be significant — even without solar panels.

You’re likely to find that an EcoFlow portable power station quickly pays for itself, not only by offering you peace of mind but also by cutting your electricity bills.

How To Choose the Best Battery Backup for a Refrigerator

Here are the most crucial things to consider when choosing the right refrigerator battery backup solution for your home.

Starting and Running Watts

When shopping for refrigerator battery backup, it’s essential to understand the difference between starting and running watts. 

Many high-wattage appliances, particularly ones that use motors, require significantly more AC output wattage to start up than to operate.

Many battery backups and gas generators don’t provide much additional starting wattage (also known as surge power) above their operating wattage, often only 10%.

Fridges run on motors that frequently power on and off during normal operation based on internal temperature.

It’s essential to ensure that the backup battery or generator you choose outputs sufficient surge power to turn on your fridge. Otherwise, it won’t work.

Because starting wattage isn’t really an issue when you’re plugged into a wall outlet, not all manufacturers list surge power requirements on appliance labels or manuals.

If necessary, contact the manufacturer to confirm the fridge or freezers minimum starting and operating wattage requirements.

Total Output Power Requirements

Aside from confirming that the battery backup or generator provides enough starting and running wattage, carefully calculate the total wattage of all the appliances you want to operate simultaneously.

This is relatively straightforward if you’re looking for a standalone battery backup for only your fridge.

However, the complexity increases with each additional appliance you want to back up.

Ensure the battery can output sufficient wattage, voltage, and amperage to meet your requirements.

Battery Storage Capacity 

Once you’ve determined how much power you need to start and run your appliances, it’s time to decide how long you want to be able to operate them between charges.

There’s no “right” answer to that question…

It’s up to you to assess your level of risk and how much backup power will make you feel at ease.

No battery, no matter how “big,” runs indefinitely without recharging.

However, a battery that gives you charging options in addition to AC (household) electricity reduces your reliance on the grid — if you add additional energy sources for recharging.

Charging Methods

Many appliance backup batteries and UPS systems can only be recharged using grid power.

That means once the battery runs out, you’ll have to wait for the power to come back on after a blackout to run your fridge. 

EcoFlow’s portable power stations give you multiple options to recharge in addition to utility grid electricity.

For example, EcoFlow DELTA Pro 3 offers 7 unique and 18 combo charging methods to help meet your needs, including solar panels and alternator charging.

Lifespan and Performance

Inexpensive backup and UPS systems often rely on dated lead-acid battery technology, which has significant drawbacks compared to modern lithium-ion backup solutions, including:

• Shallow depth of discharge
• Short cycle life (number of full charges/discharges before the battery must be replaced)
• Safety
• State-of-charge sensitivity

EcoFlow’s portable power stations feature industry-leading lithium iron phosphate (LFP/LiFePO4) battery chemistry, offering outstanding longevity, safety, and performance.

They require no routine maintenance and can last for over a decade of daily use without a perceptible decline in performance (3000-4000 cycles before storage capacity diminishes by 20%).

Frequently Asked Questions

Final Thoughts

Given the increasing risk of blackouts and extended power outages, purchasing reliable battery backup for your essential home appliances is the responsible thing to do.

Investing in an affordable solution like EcoFlow DELTA 3 provides more than enough storage capacity to back up your fridge AND save you money on electricity bills.

No matter how many high-wattage home appliances you want to back up, EcoFlow has you covered.

Check out our comprehensive selection of portable power stations for everything from backpacking to whole-home backup generators today.