Charged Reviews
EcoFlow DELTA 2: Electric Generator Depot's first product image on its page headed "EcoFlow ZMR330-US 1024 Wh DELTA 2 LiFePO4 Portable Power Station" (variant SKU EFW-ZMR330-US). Credit: Electric Generator Depot (electricgeneratordepot.com). A front three-quarter view of the DELTA 2 alone on white. Clean image, no overlay.
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Manufacturer and seller images. Configuration examples may include additional equipment.

Image source: Electric Generator Depot's first product image on its page headed "EcoFlow ZMR330-US 1024 Wh DELTA 2 LiFePO4 Portable Power Station" (variant SKU EFW-ZMR330-US). Credit: Electric Generator Depot (electricgeneratordepot.com). A front three-quarter view of the DELTA 2 alone on white. Clean image, no overlay.

EcoFlow DELTA 2

By EcoFlowSKU not documented

Power station51.2 V
Evidence score4/100Missing details
5.0 (2)
View all reviews (2)Write a review
Battery capacity1,024 WhChemistry LFP · Cycle life 4,000 cyclesRated AC output1,800 WSurge AC output 2,700 WSolar input limit500 WSolar input voltage11-60 VWeight12 kg / 26.46 lbDimensions 211 W × 281 H × 400 L mmCertificatesNone on fileEvidence missing

Key specs

Units
Chemistry
LFP
Official user manual
Sources

Printed as "Cell Chemistry LFP" in the EcoFlow DELTA 2 user manual, Specifications, captured on September 26, 2026.

Official user manual: EcoFlow DELTA 2 User Manual (September 24, 2026 capture) Checked · Earlier document

Location: Specifications

Documented

Rated capacity
1.02 kWh
Converted: 1024 Wh / 1000 = 1.024 kWh
Official user manual
Sources

Converted: 1024 Wh / 1000 = 1.024 kWh

The manual prints "Capacity 1024Wh, 51.2V⎓" for the power station itself. Its capacity figure is expressed here in kWh. Expansion-battery totals are excluded. This is not a usable-energy or AC-delivered-energy figure; no depth of discharge or efficiency is applied.

Official user manual: EcoFlow DELTA 2 User Manual (September 24, 2026 capture) Checked · Earlier document

Location: PDF page 11, Specifications, General Info, Capacity

Converted

Battery voltage
51.2 V
Official user manual
Sources

Printed as "Capacity 1024Wh, 51.2V⎓" in the EcoFlow DELTA 2 user manual, Specifications, captured on September 26, 2026.

Official user manual: EcoFlow DELTA 2 User Manual (September 24, 2026 capture) Checked · Earlier document

Location: Specifications

Documented

Solar input voltage
11 to 60 V
Official user manual
Sources

Printed as "Solar Charging 11-60V⎓15A Max, 500W max." in the Input Ports table; the charging section adds "please ensure that the solar panel’s output voltage is within 60V to avoid product damage". Capped at 15A and 500W. A generic input range, not labeled as an MPPT range or an open circuit voltage.

Official user manual: EcoFlow DELTA 2 User Manual (September 24, 2026 capture) Checked · Earlier document

Location: User manual, Specifications, Input Ports, Solar Charging

Documented

PV input current / MPPT
15 A
Official user manual
Sources

Printed as "Solar Charging 11-60V⎓15A Max, 500W max." in the EcoFlow DELTA 2 user manual, Specifications, captured on September 26, 2026.

Official user manual: EcoFlow DELTA 2 User Manual (September 24, 2026 capture) Checked · Earlier document

Location: Specifications

Documented

Cycle life
4,000 cycles
to 80%+ capacityOfficial user manual
Sources

Printed as "Cycle Life 4000 cycles to 80% + capacity" in the EcoFlow DELTA 2 user manual, Specifications, captured on September 26, 2026.

Official user manual: EcoFlow DELTA 2 User Manual (September 24, 2026 capture) Checked · Earlier document

Location: Specifications

Documented

Weight
12 kg26 lb converted
Official user manual
Sources

Printed as "Net Weight Approximately 12kg (27lbs)" in the EcoFlow DELTA 2 user manual, Specifications, captured on September 26, 2026.

Official user manual: EcoFlow DELTA 2 User Manual (September 24, 2026 capture) Checked · Earlier document

Location: Specifications

Documented

Dimensions
23.72 L
Calculated: Enclosure volume: W × H × D ÷ 1,000,000
W: 211 × H: 281 × L: 400 mmW: 8.31 × H: 11.1 × L: 15.7 in convertedOfficial user manual
Sources

Printed as "Dimensions 400 × 211 × 281mm (15.7 × 8.3 × 11.1in)" in the EcoFlow DELTA 2 user manual, Specifications, captured on September 26, 2026.

Official user manual: EcoFlow DELTA 2 User Manual (September 24, 2026 capture) Checked · Earlier document

Location: Specifications

Calculated

1 spec not documented yet: usable capacityHelp fill in ›

All specs21
Chemistry
LFP
Official user manual
Sources

Printed as "Cell Chemistry LFP" in the EcoFlow DELTA 2 user manual, Specifications, captured on September 26, 2026.

Official user manual: EcoFlow DELTA 2 User Manual (September 24, 2026 capture) Checked · Earlier document

Location: Specifications

Documented

Rated capacity
1.02 kWh
Converted: 1024 Wh / 1000 = 1.024 kWh
Official user manual
Sources

Converted: 1024 Wh / 1000 = 1.024 kWh

The manual prints "Capacity 1024Wh, 51.2V⎓" for the power station itself. Its capacity figure is expressed here in kWh. Expansion-battery totals are excluded. This is not a usable-energy or AC-delivered-energy figure; no depth of discharge or efficiency is applied.

Official user manual: EcoFlow DELTA 2 User Manual (September 24, 2026 capture) Checked · Earlier document

Location: PDF page 11, Specifications, General Info, Capacity

Converted

Usable capacity
Not documented
Battery voltage
51.2 V
Official user manual
Sources

Printed as "Capacity 1024Wh, 51.2V⎓" in the EcoFlow DELTA 2 user manual, Specifications, captured on September 26, 2026.

Official user manual: EcoFlow DELTA 2 User Manual (September 24, 2026 capture) Checked · Earlier document

Location: Specifications

Documented

Solar input voltage
11 to 60 V
Official user manual
Sources

Printed as "Solar Charging 11-60V⎓15A Max, 500W max." in the Input Ports table; the charging section adds "please ensure that the solar panel’s output voltage is within 60V to avoid product damage". Capped at 15A and 500W. A generic input range, not labeled as an MPPT range or an open circuit voltage.

Official user manual: EcoFlow DELTA 2 User Manual (September 24, 2026 capture) Checked · Earlier document

Location: User manual, Specifications, Input Ports, Solar Charging

Documented

PV input current / MPPT
15 A
Official user manual
Sources

Printed as "Solar Charging 11-60V⎓15A Max, 500W max." in the EcoFlow DELTA 2 user manual, Specifications, captured on September 26, 2026.

Official user manual: EcoFlow DELTA 2 User Manual (September 24, 2026 capture) Checked · Earlier document

Location: Specifications

Documented

Cycle life
4,000 cycles
to 80%+ capacityOfficial user manual
Sources

Printed as "Cycle Life 4000 cycles to 80% + capacity" in the EcoFlow DELTA 2 user manual, Specifications, captured on September 26, 2026.

Official user manual: EcoFlow DELTA 2 User Manual (September 24, 2026 capture) Checked · Earlier document

Location: Specifications

Documented

Lifetime production

Not published

Published claims and calculations are not independently tested lifetime output.

Published claims and calculations, not independent test results.

Documents

1 on file
  • PDF
    EcoFlow DELTA 2 User Manual (September 24, 2026 capture)OfficialEcoFlowOfficial user manual
    Source details
    Revision
    Not stated
    Revision date
    Not stated

    Location: Specifications, Input Ports, Solar Charging

    Retrieved

    EcoFlow DELTA 2 user manual, the PDF offered for download by the DELTA 2 online manual at manuals.ecoflow.com/us, preserved byte for byte, captured on September 24, 2026; the revision is whatever the URL served on that date and no later revision was checked. It was found through the EcoFlow US download center listing for the product (api-a.ecoflow.com download list behind ecoflow.com/us/support/download).

    Archived copies

    Archived copy of a document published by EcoFlow. Copyright retained by the publisher; kept for reference and verification only, no endorsement implied. To ask for its removal, email legal@chargedreviews.com.

    Archived backup Revision not recorded · 7.48 MB

    Archived copy, unaltered, kept as a record of what EcoFlow published. Original address: https://ecoflow-service-us-prod.oss-us-west-1.aliyuncs.com/cms/manual/1753868387404/DELTA%202%20User%20Manual.pdf. Copyright and takedown

    Source first found
    This copy captured
    Archived
    File detailsOriginal source
    Pages
    18
    Embedded creation date
    Embedded modification date

    Embedded dates are file metadata, not independent proof of publication.

    SHA-256: 6a3c4b75882d9712e0b9f6933afdb9f424871285fe7d71ef59d41d5588e9a317

    Open

Archive and older revisions

Archive and older revisions0

Earlier revisions, archived captures and copies published by someone other than the manufacturer. Every one stays reachable.

Archived documents

EcoFlow DELTA 2 User Manual (September 24, 2026 capture)

Archived copy of a document published by EcoFlow. Copyright retained by the publisher; kept for reference and verification only, no endorsement implied. To ask for its removal, email legal@chargedreviews.com.

Archived backup Revision not recorded · 7.48 MB

Archived copy, unaltered, kept as a record of what EcoFlow published. Original address: https://ecoflow-service-us-prod.oss-us-west-1.aliyuncs.com/cms/manual/1753868387404/DELTA%202%20User%20Manual.pdf. Copyright and takedown

Source first found
This copy captured
Archived
File detailsOriginal source
Pages
18
Embedded creation date
Embedded modification date

Embedded dates are file metadata, not independent proof of publication.

SHA-256: 6a3c4b75882d9712e0b9f6933afdb9f424871285fe7d71ef59d41d5588e9a317

Submit a document

Warranty

No warranty terms on file.

Sellers

No sellers found.

Report a missing or wrong seller

Price history

No seller price history.

Owner reviews

5.0 / 52 reviews

Recent reviews count from the latest approved revision. Verified reviews carry 19× the weight. Select a period to filter.

Ratings by category

Warranty
Not rated
Software
4.5 / 52 reviews
Reliability
5.0 / 52 reviews
Build quality
5.0 / 52 reviews
Ease of install
5.0 / 52 reviews
Customer service
Not rated

Showing 2 of 2 reviews

@thesecond550 pointsUnverified

Excellent, easy to use purchase in 2023.

Software
4/5
Reliability
5/5
Build quality
5/5
Ease of install
5/5

My wife uses a CPAP machine. When the power goes out (we live in FL). that's a problem. So, doing research, most people were saying get a Jackery 500 or something that size and turn off all the stuff that you would normally run on her ResMed. That seemed like malarkey to me, so I looked for something a little bigger. Hence, the Ecoflow Delta 2 and 2 190w solar panels. Since the initial charge via the wall outlet, I have NEVER powered it from the wall again. With the MPPT built-in, it was a good fit. But shortly thereafter, I thought it stupid to just let is sit there, waiting. I began putting it to work. It runs the washing machine, the slow cooker, an induction burner, charges all of the EGO batteries, even the outdoor Christmas lights for a month each year. I added the external Ecoflow battery before I discovered Will Prowse. So, I have it and use it but wouldn't recommend it. I've also added 4 100ah lifepo4 batteries to help out as needed when we lose the sun for too long. I have a relative that purchased a gas generator about the same time; he hasn't even opened the box yet. The price I originally paid is superfluous as they are much cheaper now and you can get larger units for the same money. But I have zero regrets.

Owner system photo 1

@justhank3 pointsUnverified

My first unit - very satisfactory

Software
5/5
Reliability
5/5
Build quality
5/5
Ease of install
5/5

I got a Delta 2 in 2024. I used it to get partly through the Palisades fire shutdown. It lasted about 1-1/2 days of the 3-day shutdown. Didn’t have enough solar panels or time to fully recharge. In general, everything about the Delta 2 performed as expected, just needed to set up solar panels better. I am very happy with the unit, build quality, app, everything. EcoFlow is more expensive than other brands, but it just works - EcoFlow is often compared to Apple in that regard. I’m often suspicious of five star reviews, but the Delta 2 is solid.

Disclosure: No special deal, no discount, paid for it myself.

Write a review

Your reviews · Review policy

Evidence score

4/100Missing details20% documented

The Evidence score uses the priorities you choose. It counts published documents, such as certificates and warranty terms, and it compares a documented figure with the best documented figure of the same kind. It does not count owner reviews, and it is not a verdict on product quality or on how many people have reviewed it. A low score can mean little is documented, or that a documented figure is below the best of its kind. Undisclosed data scores 0.

Missing details. This number counts only the evidence recorded so far. The source review for this product is not finished, or the maker has not disclosed enough, so the number can only go up.

Missing for this product: Certificates evidence needed; Warranty term needed; Warranty energy disclosure evidence needed; Cell model disclosure evidence needed.

Power stations · Output unconfirmed · Rated capacity

The warranty term and the lifetime energy are each scored against the best documented value for a power station: a value earns its share of that best, times the weight. A documented value always earns points; an undisclosed one earns 0.

Lifetime / capacity4,000 cycles4 / 20

Cycle rating disclosed · 20% weight

Documented cycle rating earns 20% of this criterion. More evidence is needed to compare lifetime MWh per kWh.

20 × 0.2 = 4 points.

Official user manual: EcoFlow DELTA 2 User Manual (September 24, 2026 capture) Checked · Earlier document

Research pending, 0 points: Certificates, Warranty term, Warranty energy disclosure, Cell model disclosure.

Computed from public specifications and evidence records. Warranty duration is not service quality; certificate evidence points are not a safety rating. Compatibility and installation limits still apply.

How it works Manufacturer? Submit documentation

Certificates

No certificates on file. Certificate guide

Parts and accessories

No sourced accessories or replacement parts listed yet.

Model history

Model identity

Model
DELTA 2

No historical observations recorded yet.

Videos

1 video

The $799 Ecoflow Delta 2

Will Prowse ·

Video by Will Prowse, a co-owner of Charged Reviews.

Model match

EcoFlow DELTA 2 only; excludes DELTA 2 Max and extra batteries.

Watch on YouTube

Community discussions

2

Links to DIY Solar Forum threads. The title is the forum's own words. It is a member's experience, not a Charged test, not a verified fault rate, and not a statement by the maker.

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Recalls / legal notices

No recalls or legal notices on file; this is not a complete recall or court search. All notices · Report a notice

EcoFlow logo
EcoFlowProducts, reviews and history
3.5 (18)

Something wrong that is not one of the values above?

Prices · price basis. * Calculated; estimates labeled. Value needs confirmation; select it for the reason.