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EcoFlow DELTA Pro
Most expandable1 kWh+2 kWh+Solar 500 W+Expandable

EcoFlow

EcoFlow DELTA Pro

The original big EcoFlow: 3.6 kWh that scales to 25 kWh.

4.6 (657)7.5/10
Capacity
3,600 Wh
Output
3,600 W
Surge
7,200 W
Weight
99 lb
Recharge
2.7 h
Solar in
1,600 W
$1,899.00$2,599.00−27%Amazon price as of Sep 27, 2026

In stock · 300+ bought last month · Sold by EcoFlow Inc.

Check price on Amazon

Our verdict

Still capable, but the newer 3 kWh units are better value unless you need its solar and expansion.

3,600 Wh and 3,600 W with 1,600 W of solar input, EV-station charging and expansion to 25 kWh. It's older, heavier (99 lb) and pricier than the newest 3 kWh units.

Ideal for

Large solar setups and homes planning a scalable battery system.

Skip it if

Anyone who wants the lowest cost per Wh or needs to move it often.

Capacity10Output10Charging7Solar input10Portability0Battery life7Value6

Editor scores

How it rates

  • Capacity10
  • Output10
  • Charging7
  • Solar input10
  • Portability0
  • Battery life7
  • Value6

Scores are our editorial ratings (0–10), not manufacturer specs. How we score.

Specifications

Full spec sheet

Battery

Capacity3,600 Wh
Battery chemistryLiFePO4
Rated cycles—
Expandable to25,000 Wh

Output

AC output (continuous)3,600 W
Surge / peak7,200 W
AC outlets5
Fastest USB-C port100 W
30 A RV outlet—

Charging

Max AC charging input1,800 W
Full charge from the wall162 min
Charging speed (claimed)2.7 h at 1,800 W (120 V); 1.8 h at 3,000 W on a 240 V outlet
Max solar input1,600 W
UPS switchover—

Size & build

Weight99 lb
Dimensions25 × 11.2 × 16.4 in
Noise (claimed)—

Other

App controlEcoFlow app (Wi-Fi + Bluetooth)
Warranty5 years

Other details

X-BoostUp to 4,500 W for resistive loads
Other outputs4 USB-A, car 126 W, 2 DC5521, Anderson 12.6 V/30 A
ChargingWall, 240 V outlet, EV station, solar (11–150 V, 15 A), car
PairingTwo units give 7,200 W / 240 V

How long it runs (estimates)

CPAP, no humidifier (40 W, 8 h a night)9.6 nights
CPAP + heated humidifier (90 W)4.2 nights
Wi-Fi router + modem (20 W)153 h
Full-size fridge (~1.3 kWh a day)58 h
Laptop (60 W)51 h
Phone charges (~15 Wh each)204 charges

Based on 3,600 Wh × 85% usable after inverter losses. Your devices may draw more or less — check yours in the calculator.

Will it run your devices?Check EcoFlow DELTA Pro against your fridge, CPAP, router and anything else in the runtime calculator

Sources: Amazon listing (3,600 Wh LFP, 3,600 W / 7,200 W surge, 1,600 W solar, 1,800 W / 3,000 W AC input, expandable to 25 kWh, 99 lb, 5-year warranty). Cycle rating and UPS time aren't on this listing. A dash (—) means the value isn't published anywhere we could verify.

In-depth review

What it's like to own

The DELTA Pro has been EcoFlow's flagship home battery for years. It delivers 3,600 W from five AC outlets (4,500 W with X-Boost, 7,200 W surge) and a 30 A Anderson port for RV and marine gear.

Its charging options are the widest here: 1,600 W of solar, 3,000 W from a 240 V dryer outlet, even an EV charging station. Extra batteries and a Smart Generator scale it to 25 kWh.

The downsides are age and bulk: 99 lb on wheels, and $1,899 for less capacity per dollar than the BLUETTI Elite 300 or Jackery 3600 Plus. Owners run heat presses at vendor markets and replace noisy gas generators with it.

Pros

  • 1,600 W solar
  • 240 V and EV-station charging
  • Expandable to 25 kWh
  • 3,600 W, 7,200 W surge

Cons

  • 99 lb
  • $0.53 per Wh
  • Older design
  • Solar limited to 15 A per owner feedback
See it on Amazon

Owner reviews

What buyers say

4.6 (657)
  • 5★84%
  • 4★7%
  • 3★2%
  • 2★1%
  • 1★6%

4.6★ from 657 ratings (91% 4–5 stars). Owners use it to replace gas generators, run heat presses at markets and cover multi-day outages. One notes the 15 A solar limit restricts what you can do.

5.0Sep 18, 2025

Reliable outage backup without a noisy generator's hassles.

— Sgt. J., Amazon.com

5.0Jan 25, 2026

Runs a heat press at vendor markets with no voltage drops.

— Thomas, Amazon.com

5.0Aug 27, 2026

Works well; the 15 A solar limit is the main restriction.

— Jonathan Ford, Amazon.com

Owner reviews from Amazon.com, summarized in our words. Ratings as of Sep 27, 2026.

Ready to decide?

Check today's price and delivery date on Amazon, or stack it against the alternatives.

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