EcoFlow DELTA 3 Max EF-DL-H02-3M

Photo from the manufacturer

Home backup F2 · Room-sized (1–3 kWh)

EcoFlow EcoFlow DELTA 3 Max

Name: EcoFlow DELTA 3 Max
Brand: EcoFlow
SKU: EF-DL-H02-3M
Author: JouleSpecs

Estimated price range

1000–2200 € ≈ $1,080–$2,376

An editorial estimate, not a selling price

JouleSpecs does not sell and does not show shop prices: check the price where you buy.

Where to buy

Check the price on Amazon

Paid link: the price for you does not change.

As an Amazon Associate I earn from qualifying purchases.

Sheet on the EcoFlow website →

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Data from official source

Sheet curated by JouleSpecs — We check every spec sheet against the manufacturer's own documentation: each value carries its source and the date we read it. Published Sept. 21, 2026 · Data verified Sept. 21, 2026

EcoFlow DELTA 3 Max has no port for expansion batteries: the capacity it ships with is the one it keeps for the product's whole life. In exchange it's the most powerful in its size class on the outlets, with a comfortable margin to start a compressor together with other heavy loads, and in a blackout it steps in within ten milliseconds.

It charges from the outlet, the sun or the car; from mains power alone it's fully charged in just over an hour. Under moderate load, noise stays low enough to leave it running in a corner of the living room overnight.

It suits anyone looking for the highest power possible in a single unit, without adding batteries later. Anyone planning to expand it further down the line should look at a model with the expansion port: here, that port doesn't exist.

01 · Verified data

Technical specifications

Cell chemistry LFP (lithium iron phosphate)

Continuous output 2400 W

Cost per kWh 634,28 €/kWh

official manufacturer list price — on nominal capacity

Round-trip efficiency EcoFlow does not state it.

where we looked

Standby consumption EcoFlow does not state it.

where we looked

Parameter	Value	Source
Dimensions	49.4 × 23.9 × 30.5 cm (19.4 × 9.4 × 12.0 in)	manufacturer website
Weight	20.3 kg (44.8 lb)	manufacturer website
Nominal capacity	2.048 kWh	Declared by the brand
Cell chemistry	LFP (lithium iron phosphate)	Declared by the brand
Expandable	No	Declared by the brand
Continuous output	2400 W	Declared by the brand
Peak output	4800 W	Declared by the brand
AC outlets	4	Declared by the brand
Fastest USB-C	100 W	Declared by the brand
Maximum charge power	2.3 kW	Declared by the brand
Maximum solar input	500 W	Declared by the brand
Backup power	UPS	Declared by the brand
Switchover time	10 ms	Declared by the brand
Warranty	3 anni	Declared by the brand
Ingress protection	IP20	Declared by the brand
Mounting	Portable	Declared by the brand
Noise level	25 dB	Declared by the brand
Official list price	1299 €	Declared by the brand
Usable capacity	—	Not declared
Depth of discharge	—	Not declared
Cell supplier	—	Not declared
Maximum expanded capacity	—	Not declared
Peak duration	—	Not declared
0–80% charge time	—	Not declared
Rated cycles	—	Not declared
Capacity at end of cycle life	—	Not declared
Guaranteed throughput	—	Not declared
Guaranteed remaining capacity	—	Not declared
Round-trip efficiency	—	Not declared
Standby consumption	—	Not declared
Minimum temperature	—	Not declared
Maximum temperature	—	Not declared
Cell heating	—	Not declared
Wheels and handle	—	Not declared
Works without internet	—	Not declared
Local control	—	Not declared
Open protocols	—	Not declared
Home Assistant integration	—	Not declared
Where the data is hosted	—	Not declared
Remote updates	—	Not declared
App required for setup	—	Not declared
Declared standards	—	Not declared

Which documents this page rests on

eb2c386a c823 422e a20a 35de4ea96ad1 30 rows of the table · file hosted on images.thdstatic.com

The rest of the data comes from one page on the manufacturer's site, cited row by row in the table above.

A manual or a datasheet counts as a source even when the original file is hosted elsewhere: what matters is the document, not the server. Where that happens, it is stated above.

02 · The numbers

What it really costs

Cost per kWh 634.280 €/kWh official manufacturer list price — on nominal capacity

How we worked it out

price: 1299
nominal capacity: 2.048

Battery life cycles 1095 cycles warranty years

the manufacturer does not state the guaranteed total energy throughput, which for heavy users is often the limit that runs out first

How we worked it out

warranty years: 1095

Cost of stored energy 0.579 €/kWh warranty years

the manufacturer does not state the guaranteed total energy throughput, which for heavy users is often the limit that runs out first
on nominal capacity: the manufacturer does not state the usable figure, so the real cost is higher
without conversion losses, which the manufacturer does not state: the real cost is higher

How we worked it out

price: 1299
nominal capacity: 2.048
battery life cycles: 1095
round-trip efficiency: 100
energy delivered over the whole life: 2243

Energy density 100.900 Wh/kg

on nominal capacity: the manufacturer does not state the usable figure, so the true number is lower

How we worked it out

nominal capacity: 2.048
weight: 20.300

Power-to-capacity ratio 1.170 C

on nominal capacity: the manufacturer does not state the usable figure, so the true number is lower

How we worked it out

continuous power: 2400
nominal capacity: 2.048

These numbers are calculated, not stated: they have no source to cite, they have a formula you can redo. The price used is the manufacturer's list price, which is stable and the same in every country — not a shop's price on the day.

03 · Summary

Pros and cons

In favour

It starts a compressor together with other heavy loads without the output tripping: it's the most powerful in its size class.
When power fails it steps in fast enough that a running computer and a modem don't notice.
Under moderate load it's barely audible: it can be left running in the living room while you sleep.
From the outlet alone it's fully charged in just over an hour.

Worth knowing

The starting capacity is final: there's no port to add a battery later.
The standard warranty is three years: reaching five means registering the product in the app.
It's hard to lift alone: it's an object to position, not to carry back and forth every day. source

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