EcoFlow Delta 2 vs Bluetti AC180 — Which One Actually Runs a Refrigerator Better?

The EcoFlow Delta 2 and Bluetti AC180 are two of the most popular portable power stations for home backup and refrigerator use. Both offer strong inverter output, LiFePO4 battery technology, and solid real-world performance.

But they are not the same unit and depending on your priorities, one will be a significantly better fit than the other.

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Quick Verdict

If you want the fastest recharge speed and a lighter unit, the EcoFlow Delta 2 is the better choice. If you want more battery capacity for the price and long-term durability, the Bluetti AC180 is the stronger value.

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Specs Comparison

Specification	EcoFlow Delta 2	Bluetti AC180
Battery Capacity	1024Wh	1152Wh ✅
Inverter Output	1800W	1800W
Surge Power	2700W	2700W
Battery Type	LiFePO4	LiFePO4
Weight	~27 lbs ✅	~35 lbs
Expandable Battery	Yes ✅	No
Solar Input	500W max	500W max

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Startup Surge Performance

Both units deliver 2700W of surge power enough to handle the startup surge of most standard and large refrigerators without difficulty.

To understand why startup surge is the most critical spec, read our guide on refrigerator startup surge and power requirements.

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Runtime Comparison

Scenario	EcoFlow Delta 2	Bluetti AC180
Standard fridge (150W avg)	8 to 10 hours	9 to 11 hours ✅
Large fridge (250W avg)	5 to 6 hours	6 to 7 hours ✅
Mini fridge (80W avg)	15 to 18 hours	17 to 20 hours ✅

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Charging Speed Comparison

This is where the two units differ most significantly. The EcoFlow Delta 2 charges from 0 to 100% in approximately 80 minutes using standard AC charging, one of the fastest recharge speeds in this category. The Bluetti AC180 charges in approximately 1.5 to 2 hours under similar conditions.

For homeowners who expect frequent short outages where power returns quickly, the EcoFlow Delta 2 faster recharge speed is a significant advantage.

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Weight and Portability

The EcoFlow Delta 2 weighs approximately 27 lbs, making it noticeably lighter than the Bluetti AC180 at approximately 35 lbs. If you need to move the unit frequently between floors, in and out of a vehicle, or to different rooms, the EcoFlow Delta 2 is easier to handle.

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Expandability

The EcoFlow Delta 2 supports an optional extra battery, allowing you to expand total capacity from 1024Wh to over 2000Wh. This is a significant advantage if you anticipate longer outages or want to grow your backup system over time.

The Bluetti AC180 does not offer a dedicated expansion battery. What you buy is the total capacity you get.

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Price and Value

The Bluetti AC180 is typically priced lower than the EcoFlow Delta 2 while offering slightly more battery capacity. For buyers who want maximum value per dollar and do not need fast recharging or expandability, the Bluetti AC180 is the stronger financial choice.

The EcoFlow Delta 2 commands a modest premium justified by its faster recharge speed, lighter weight, and expandable battery system.

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Who Should Buy the EcoFlow Delta 2?

• You want the fastest recharge speed available
• You want a lighter unit that is easy to move
• You want the option to expand battery capacity later
• You expect frequent short outages where fast recharge matters

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Who Should Buy the Bluetti AC180?

• You want more battery capacity for the price
• You want the best value in this category
• You do not need expandability or ultra-fast recharging
• You want a reliable LiFePO4 system at a lower cost

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Final Verdict

For refrigerator backup specifically, both units perform equally well at startup and runtime. The choice comes down to your secondary priorities.

Priority	Winner
Fastest recharge speed	EcoFlow Delta 2 ✅
Most battery capacity	Bluetti AC180 ✅
Lightest weight	EcoFlow Delta 2 ✅
Best value for money	Bluetti AC180 ✅
Expandable battery	EcoFlow Delta 2 ✅
Refrigerator startup surge	Tie — both 2700W

Not sure which model fits your refrigerator specifically? Read our complete guide on what size power station you need for a refrigerator.

Want to compare all five top models side by side? Read our full ranking of the best portable power stations for refrigerator backup.

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Frequently Asked Questions

Is the EcoFlow Delta 2 better than the Bluetti AC180?

For refrigerator backup, both are equally capable. The EcoFlow Delta 2 is better if you need fast recharging and lighter weight. The Bluetti AC180 is better if you want more battery capacity and better value for money.

Can both run a full-size refrigerator?

Yes. Both units have 1800W inverter output and 2700W surge capacity, more than enough for most standard and large refrigerators.

Which has a longer runtime for refrigerators?

The Bluetti AC180 provides slightly longer runtime due to its larger 1152Wh battery vs the EcoFlow Delta 2's 1024Wh. The difference is approximately 1 to 2 hours under typical refrigerator loads.

Which charges faster?

The EcoFlow Delta 2 charges significantly faster, approximately 80 minutes vs 1.5 to 2 hours for the Bluetti AC180.

Can I expand the battery on either unit?

Only the EcoFlow Delta 2 supports an optional expansion battery. The Bluetti AC180 has a fixed battery capacity with no expansion option.