Manufacturer research · 2026-10-17

DELTA 3 vs DELTA 2

Two ways to plan backup power. Compare the details that matter to your home.

Nominal capacity: 1,024 Wh Manufacturer source for Nominal capacity (checked 2026-10-04; opens in a new tab)
Continuous AC output: 1,800 W Manufacturer source for Continuous AC output (checked 2026-10-04; opens in a new tab)
Base-unit weight: 27.6 lb Manufacturer source for Base-unit weight (checked 2026-10-04; opens in a new tab)

Where it fits

Selected 120 V essentials after checking running watts, startup demand, and daily energy.

When to consider another option

Loads requiring 240 V or more than the continuous output rating.

More fit considerations

Other situations to consider

Households that need a portable unit and can recharge between interruptions.
Readers comparing documented transfer behavior with their actual equipment requirements.

Other reasons to choose a different setup

Long outages without sufficient battery capacity or a dependable recharge plan.
A different variant if your charging requirement exceeds the base model’s documented solar input.

Manufacturer specification record · No hands-on testing · Source records checked on 2026-10-04

Compare EcoFlow DELTA 3 and DELTA 2 across nominal capacity, surge ceiling (3,600 W vs 2,700 W), UPS transfer time (10 ms vs 30 ms), and solar input, with BLUETTI Elite 100 V2 as a reference.

How the options differ

Different households can reach different answers

We compare the US models using their manufacturer specifications and manuals, then interpret the differences for household backup planning. We have not tested either unit. Capacity is nominal battery energy, not measured AC output. We do not rank by commission, current price, star ratings, or advertised boosted-power modes. Per-field source dates appear in the specification table.

Best fit by need

You are buying new and want 10 ms transfer and 3,600 W surge: Examine EcoFlow DELTA 3

The faster 10 ms transfer rating and higher 3,600 W surge ceiling are the primary documented upgrades over DELTA 2.
You already own a working DELTA 2 for refrigerator or lighting backup: Keep EcoFlow DELTA 2 in service

Nominal capacity (1,024 Wh), continuous output (1,800 W), and solar input (500 W) are unchanged on the base DELTA 3.
You want a 1,000 W solar-input ceiling instead of 500 W: Compare BLUETTI Elite 100 V2

Elite 100 V2 pairs 1,024 Wh capacity and 10 ms transfer with up to 1,000 W solar input.

Documented specifications and the older alternative

Manufacturer specifications, not hands-on measurements. Each figure includes its source and check date. “Not documented” means the reviewed record does not establish the feature.

Compare columns. Swipe or scroll horizontally on smaller screens.

Documented specifications and the older alternative. Manufacturer research only.
Specifications Direct comparison	EcoFlow DELTA 3 Paid links — we may earn a commission. As an Amazon Associate I earn from qualifying purchases. View on Amazon (opens in a new tab) Model guide →	EcoFlow DELTA 2	BLUETTI Elite 100 V2 Paid links — we may earn a commission. As an Amazon Associate I earn from qualifying purchases. View on Amazon (opens in a new tab) Model guide →
Stored energy Nominal capacity, before reserve and AC conversion losses.	1,024 Wh Source · checked 2026-10-04 (opens in a new tab)	1,024 Wh Source · checked 2026-10-04 (opens in a new tab)	1,024 Wh Source · checked 2026-10-22 (opens in a new tab)
Continuous AC output The running-load limit; check motor startup separately.	1,800 W Source · checked 2026-10-04 (opens in a new tab)	1,800 W Source · checked 2026-10-04 (opens in a new tab)	1,800 W Source · checked 2026-10-22 (opens in a new tab)
Base-unit weight Differs Consider stairs, storage, and who will carry it.	27.6 lb Approximate net weight. Source · checked 2026-10-04 (opens in a new tab)	27 lb Source · checked 2026-10-04 (opens in a new tab)	25.3 lb Approximate US manual weight; the US product page rounds this to 25 lb. Source · checked 2026-10-22 (opens in a new tab)
Solar input ceiling Differs An input limit, not a promise of real solar production.	500 W Exact-model manual (EF-DL-H10-3) specifies 500 W maximum; EcoFlow's product page mixes series-level DELTA 3 Plus details, so confirm the model label before applying this value. Source · checked 2026-10-04 (opens in a new tab)	500 W Source · checked 2026-10-04 (opens in a new tab)	1,000 W 12–60 V, 20 A maximum. Source · checked 2026-10-22 (opens in a new tab)
US AC voltage Must match the appliance and connection requirements.	120 V only documented US/CA model AC output is 120 V. Source · checked 2026-10-04 (opens in a new tab)	120 V only documented US/Canada AC output is 120 V. Source · checked 2026-10-04 (opens in a new tab)	120 V only documented AC output is 120 V, 15 A maximum. Source · checked 2026-10-04 (opens in a new tab)
Expanded capacity Differs Requires the manufacturer's compatible extra batteries, sold separately.	Not documented Manufacturer lists compatible extra batteries and markets expansion up to 5 kWh, but this record does not establish an exact Wh ceiling for the standalone DELTA 3 configuration. Source · checked 2026-10-04 (opens in a new tab)	3,072 Wh maximum Requires a separately sold compatible extra battery. Source · checked 2026-10-04 (opens in a new tab)	Not documented Manual documents solar and DC charging inputs, not directly attached battery-capacity expansion; separate Charger/B300K bundles do not establish an expansion ceiling. Source · checked 2026-10-04 (opens in a new tab)

Criterion-by-criterion record

Compare columns. Swipe or scroll horizontally on smaller screens.

Criterion	Why it matters	EcoFlow DELTA 3	EcoFlow DELTA 2
Unchanged core baseline	A newer model number does not automatically increase runtime for a refrigerator or router.	1,024 Wh LFP battery, 1,800 W continuous AC output, six AC outlets, and 500 W max solar input on the base EF-DL-H10-3 manual.	Identical 1,024 Wh LFP nominal capacity, 1,800 W continuous AC output, six AC outlets, and 500 W max solar input.
UPS / EPS transfer time	Faster switchover reduces the chance that desktop computers, NAS drives, or networking gear reboot during a grid drop.	10 ms standby UPS transfer time documented in the DELTA 3 manual.	30 ms EPS transfer time documented in the DELTA 2 manual.
Documented surge ceiling	Compressor and motor loads draw a brief startup spike above their running watts.	3,600 W surge figure in the exact-model US manual.	2,700 W surge figure in the DELTA 2 US manual.
Weight and expansion documentation	Both sit around 27 lb and support EcoFlow extra batteries, though exact ceiling documentation differs.	27.6 lb approximate weight; family expansion is marketed up to 5 kWh, though standalone Wh ceiling is left unverified in our base record.	27.0 lb listed weight; product page documents expansion up to 3,072 Wh with a compatible extra battery.

Before you order

Match the unit to your actual load

Write down simultaneous running watts, the largest startup demand, and measured daily watt-hours. A larger Wh number does not raise the output limit.
Check the exact US model and bundle. Panels, expansion batteries, and charging cables may be sold separately.
Read the seller, return, and warranty terms for the listing you select. A manufacturer specification is not proof that every marketplace bundle is equivalent.
Plan a test with your actual equipment before relying on it. Neither a brief UPS transfer time nor an advertised runtime guarantees compatibility with critical equipment.

Estimate battery runtime →

EcoFlow DELTA 3 portable power station showing front display panel and AC power ports — Photo: EcoFlow Technology Inc. / PR Newswire Source record

The base DELTA 3 is a 1,024 Wh, 1,800 W portable station for selected 120 V essentials. Start with the exact model: DELTA 3, DELTA 3 Plus, and other variants do not share every charging specification.

Read the complete DELTA 3 guide

Source records checked on 2026-10-04 for the displayed figures. They are not hands-on test results. Confirm the exact model, connections, and load requirements before buying.

Older-model alternative

BLUETTI Elite 100 V2

The Elite 100 V2 combines a 1,024 Wh battery and 1,800 W AC output with a documented 1,000 W solar-input ceiling. Its lower listed weight makes it worth comparing with the older AC180 when carrying and solar charging matter.

Nominal capacity: 1,024 Wh
Continuous AC output: 1,800 W
Base-unit weight: 25.3 lb

Source records checked on 2026-10-22. This is research, not hands-on testing. Read the manufacturer manual.

Evidence sources

Related specification comparisons

Compare other portable power station matchups

EcoFlow DELTA 3 vs BLUETTI Elite 100 V2 Compare DELTA 3 and Elite 100 V2 by capacity, carrying weight, solar input, and transfer behavior, with the older AC180 as a useful reference. Jackery Explorer 1000 v2 vs Anker SOLIX C1000 Gen 2 Compare Explorer 1000 v2 and SOLIX C1000 Gen 2 by continuous AC output, carrying weight, solar input ceiling, and UPS transfer limits, with BLUETTI AC180 as an older reference. EcoFlow DELTA 3 vs Jackery Explorer 1000 v2 Compare DELTA 3 and Explorer 1000 v2 by continuous AC output, carrying weight, solar input limits, and UPS transfer time, with BLUETTI AC180 as a third reference. BLUETTI Elite 100 V2 vs Anker SOLIX C1000 Gen 2 Compare Elite 100 V2 and SOLIX C1000 Gen 2 by solar charging ceiling (1,000 W vs 600 W), continuous AC output (1,800 W vs 2,000 W), and weight, with EcoFlow DELTA 3 as a third reference. EcoFlow DELTA Pro 3 vs EcoFlow DELTA 3 Compare the 4,096 Wh, 4,000 W, 120V/240V DELTA Pro 3 against the 1,024 Wh, 1,800 W, 120V DELTA 3 across capacity,stair portability, solar input, and panel integration.