EF ECOFLOW DELTA 4 3800 Portable Power Station, 3763Wh

EF ECOFLOW DELTA 4 3800 is a battery-powered portable power station listed with 3763 watt-hours of energy capacity. Its claimed 3600W continuous AC output and 7200W surge rating target substantial home backup, RV and camping loads, while the expandable-capacity claim depends on compatible extra batteries.

At a glance

The listing specifies 3763 watt-hours of stored energy and claims 3600W continuous AC output with 7200W surge power.
The listing says capacity can expand to 12kWh using compatible EcoFlow extra batteries. Those batteries are not stated as included.
Six recharge methods are claimed, including AC, solar and vehicle alternator options.
A claimed sub-10 ms UPS transfer is aimed at keeping connected essentials powered during a grid interruption.

Price

$2,499.00Save 17%

Reference price: ~~$2,999.00~~

Price checked: Nov 14, 2026

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Pros and cons

Pros

The stated energy capacity and output ratings are suited to buyers planning backup for larger appliances or several essential loads.
Six claimed charging methods offer different ways to recharge at home or on the road.
The stated expansion range provides a route to greater capacity when paired with compatible extra batteries.

Technical specifications

10 specifications

Identity
Brand	EF ECOFLOW
Model	DELTA 4 3800

Power and battery
Power configuration	Battery Powered

Output and backup claims
Continuous AC output	3600W
Surge power	7200W
UPS transfer claim	under 10 ms

Capacity and charging claims
Expandable capacity	4–12kWh
Full recharge claim	146 minutes
Charging methods	AC wall, solar, alternator, generator, solar + generator, or solar + alternator

Dimensions
Product dimensions (L x W x H)	47.6L x 28.8W x 30.7H centimetres

What to know before buying

The manufacturer claims a refrigerator runtime of up to 70 hours, but actual runtime depends on the appliance and operating conditions.
The claimed expansion requires compatible extra batteries, which are not listed as included. Confirm the compatible battery models and their availability separately.

Listing details to confirm

The listing states a 3763Wh capacity, calls it a DELTA 4 3800, and describes expansion from 4–12kWh. These figures and model naming are inconsistent. Confirm the selected model’s exact capacity and compatible expansion batteries before buying. The 3600W output, 7200W surge, UPS, recharge-time and runtime figures are listing claims, not independently verified here.

What’s in the box

Included

DELTA 4 3800 power station

Who is it for?

A good fit for

Households seeking a high-capacity battery backup for selected appliances during outages.
RV and camping users who need substantial stored energy and can accommodate a unit measuring 47.6L x 28.8W x 30.7H centimetres.
Buyers who may expand stored capacity later and are prepared to source compatible extra batteries.

Less suited to

Buyers needing a lightweight compact power bank or a small unit for brief device charging.
Anyone expecting a solar panel or expansion battery in the package based on the stated contents list.

EF ECOFLOW DELTA 4 3800 Portable Power Station, 3763Wh · photo 2 — Additional product photo 2

Frequently asked questions

What capacity does the listing give for the DELTA 4 3800?

It lists 3763 watt-hours, but also uses a DELTA 4 3800 name and describes an expansion range starting at 4kWh. Confirm the precise capacity for the selected model.

Are the expansion batteries included?

No extra batteries are identified in the stated contents. Expansion is described as requiring compatible EcoFlow batteries, so check what is included in the specific offer.

What output does the listing claim?

The listing claims 3600W continuous AC output and up to 7200W surge power. These are manufacturer claims and have not been independently verified here.

Can it recharge from solar?

Solar is one of six claimed charging methods. A solar panel is not listed in the stated package contents.