EcoFlow DELTA Pro 3 vs EcoFlow DELTA Pro

EcoFlow DELTA Pro 3 vs EcoFlow DELTA Pro: which one should you buy?

Quick answer

Buy the EcoFlow DELTA Pro 3 if you want backup for well pumps and big appliances. Buy the EcoFlow DELTA Pro instead if you find it well below the Pro 3.

By Buyrskip Editorial Team Updated November 2, 2026 1 min read

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Buy

EcoFlow DELTA Pro 3

Best for Whole-home ready

Typically $2,999–$3,999

Check Price on Amazon Paid link

Consider

EcoFlow DELTA Pro

Best for Discounted Pro

Typically $1,999–$2,799

Check Price on Amazon Paid link

Quick comparison

Feature	EcoFlow DELTA Pro 3	EcoFlow DELTA Pro
Verdict	Buy	Consider
Typical price	$2,999–$3,999	$1,999–$2,799
Best for	Whole-home ready	Discounted Pro
Key feature	4 kWh expandable station with 240 V output	Original DELTA Pro, often discounted
Capacity	4,096 Wh	3,600 Wh
Output	4,000 W (120/240 V)	3,600 W
Expandable to	48 kWh	25 kWh
Battery	LiFePO4	LiFePO4
Where to buy	Check Price Paid link	Check Price Paid link

Main differences

Capacity

EcoFlow DELTA Pro 3: 4,096 Wh; EcoFlow DELTA Pro: 3,600 Wh.

Output

EcoFlow DELTA Pro 3: 4,000 W (120/240 V); EcoFlow DELTA Pro: 3,600 W.

Expandable to

EcoFlow DELTA Pro 3: 48 kWh; EcoFlow DELTA Pro: 25 kWh.

Battery

EcoFlow DELTA Pro 3: LiFePO4; EcoFlow DELTA Pro: LiFePO4.

Why buy it

EcoFlow DELTA Pro 3: 4 kWh expandable station with 240 V output; EcoFlow DELTA Pro: original DELTA Pro, often discounted.

Made for

EcoFlow DELTA Pro 3: whole-home ready; EcoFlow DELTA Pro: discounted Pro.

Usual price

EcoFlow DELTA Pro 3: $2,999–$3,999; EcoFlow DELTA Pro: $1,999–$2,799.

Which should you choose?

Choose the EcoFlow DELTA Pro 3 if you

you want backup for well pumps and big appliances
value 240 V output

Check Price Paid link

Choose the EcoFlow DELTA Pro if you

you find it well below the Pro 3
value 3.6 kWh

Check Price Paid link

If neither feels right

Neither is the only answer. See every model we would buy (and the ones we would skip) in our list of the best home backup batteries.

Not sure about either? Consider these

Anker · Home backup batteries

Anker SOLIX F3800 Plus

Buy it if you want strong home backup with expansion.

Verdict: Buy
Best for: Home backup
Typical price: $2,999–$3,999

Pros

6,000 W output
240 V

Cons

Heavy

Check Price on Amazon Paid linkRead our review

Anker · Home backup batteries

Anker SOLIX F3800

Buy it if you want 240 V backup for less than the Plus.

Verdict: Buy
Best for: Value 240 V
Typical price: $2,499–$3,299

Pros

240 V
6,000 W

Cons

Heavy

Check Price on Amazon Paid linkRead our review

Frequently asked questions

EcoFlow DELTA Pro 3 or EcoFlow DELTA Pro: which should I buy?

Buy the EcoFlow DELTA Pro 3 if you want backup for well pumps and big appliances. Buy the EcoFlow DELTA Pro instead if you find it well below the Pro 3.

Is the price difference worth it?

The EcoFlow DELTA Pro 3 usually costs $2,999–$3,999 and the EcoFlow DELTA Pro $1,999–$2,799. Pay more only if the differences above matter to you.

Buyrskip Editorial Team

Part of the Buyrskip research team. We compare specifications, documentation and real-world trade-offs so you can decide faster.

How we research products Editorial policy

EcoFlow DELTA Pro 3 or EcoFlow DELTA Pro: the full reasoning

EcoFlow DELTA Pro 3 or EcoFlow DELTA Pro? Both are home backup batteries worth a look, which is exactly why the choice is hard. Here is the short version first: buy the EcoFlow DELTA Pro 3 if you want backup for well pumps and big appliances, and buy the EcoFlow DELTA Pro if you find it well below the Pro 3. The rest of this page explains why, with usual US prices.

Where they differ

The EcoFlow DELTA Pro 3 wins on 4 kWh expandable station with 240 V output. The EcoFlow DELTA Pro answers with original DELTA Pro, often discounted. Capacity: 4,096 Wh on the EcoFlow DELTA Pro 3, 3,600 Wh on the EcoFlow DELTA Pro. Output: 4,000 W (120/240 V) on the EcoFlow DELTA Pro 3, 3,600 W on the EcoFlow DELTA Pro. Expandable to: 48 kWh on the EcoFlow DELTA Pro 3, 25 kWh on the EcoFlow DELTA Pro. Battery: LiFePO4 on the EcoFlow DELTA Pro 3, LiFePO4 on the EcoFlow DELTA Pro.

Reasons to buy the EcoFlow DELTA Pro 3

240 V output, Expandable to 48 kWh, 4,000 W. What to accept: heavy, expensive. Usual price: $2,999–$3,999. Our verdict: buy. Read the full EcoFlow DELTA Pro 3 review.

Reasons to buy the EcoFlow DELTA Pro

3.6 kWh, Expandable, 3,600 W. What to accept: older, 120 V only per unit. Usual price: $1,999–$2,799. Our verdict: consider. Read the full EcoFlow DELTA Pro review.

Neither one?

Our list of the best home backup batteries has every other model with its own call. Output: 3,000 W or more (and 240 V on some models) is needed for well pumps, sump pumps and central air.

Also consider the Anker SOLIX F3800 Plus ($2,999–$3,999): 3.84 kWh station with 6 kW output and 240 V. Buy it if you want strong home backup with expansion.

Also consider the Anker SOLIX F3800 ($2,499–$3,299): 3.84 kWh station with 240 V. Buy it if you want 240 V backup for less than the Plus.

US buyer tip

Battery storage may qualify for the federal residential clean energy tax credit when installed as part of a home system; check current rules with a tax professional before you buy.

Prices on Amazon.com move in a pattern. The deepest cuts land on Prime Day in July, Prime Big Deal Days in October and the Black Friday to Cyber Monday week, with smaller drops around Presidents Day, Memorial Day, the Fourth of July and back-to-school. Judge a deal against the usual price we show, never against the crossed-out list price.