SKU: EFWAVE3-US-EB-NBox
Official store listing
Sources
EcoFlow's US store product data prints "sku":"EFWAVE3-US-EB-NBox" for the option "WAVE 3 Add-on Battery", captured October 15, 2026; the members-only option of the same listing carries the same SKU.
Official store listing: EcoFlow store Checked Oct 15, 2026 · Earlier document
Location: variants: "WAVE 3 Add-on Battery", sku
Documented
Chemistry: LFP
Official product page
Sources
Printed as "Battery Chemistry LFP" in the specs table and "LFP Battery Chemistry" in the battery's store bullets.
Official product page: EcoFlow WAVE 3 Portable Air Conditioner with Heater, EcoFlow US store page, WAVE 3 Add-On Battery Specs (October 15, 2026 capture) Checked Oct 15, 2026 · Earlier documentOfficial store listing: EcoFlow store Checked Oct 15, 2026 · Earlier document
Location: WAVE 3 Add-On Battery Specs, Battery Chemistry
Documented
Nominal energy: 1.02 kWh
Converted: 1024 Wh / 1000 Wh per kWh = 1.024 kWh
Official product page
Sources
Converted: 1024 Wh / 1000 Wh per kWh = 1.024 kWh
Printed as "Battery Capacity 1024Wh 51.2V 20Ah" in the WAVE 3 Add-On Battery Specs table and "1024Wh Capacity" in the battery's store bullets. Manufacturer claim, not an independent test.
Official product page: EcoFlow WAVE 3 Portable Air Conditioner with Heater, EcoFlow US store page, WAVE 3 Add-On Battery Specs (October 15, 2026 capture) Checked Oct 15, 2026 · Earlier documentOfficial store listing: EcoFlow store Checked Oct 15, 2026 · Earlier document
Location: WAVE 3 Add-On Battery Specs, Battery Capacity
Converted
Nominal voltage: 51.2 V
Official product page
Sources
Printed as "Battery Capacity 1024Wh 51.2V 20Ah".
Official product page: EcoFlow WAVE 3 Portable Air Conditioner with Heater, EcoFlow US store page, WAVE 3 Add-On Battery Specs (October 15, 2026 capture) Checked Oct 15, 2026 · Earlier document
Location: WAVE 3 Add-On Battery Specs, Battery Capacity
Documented
Rated capacity: 20 Ah
Official product page
Sources
Printed as "Battery Capacity 1024Wh 51.2V 20Ah".
Official product page: EcoFlow WAVE 3 Portable Air Conditioner with Heater, EcoFlow US store page, WAVE 3 Add-On Battery Specs (October 15, 2026 capture) Checked Oct 15, 2026 · Earlier document
Location: WAVE 3 Add-On Battery Specs, Battery Capacity
Documented
Cycle rating: 4,000 cycles
Official product page
Sources
Printed as "Cycle Life 80%+ capacity after 4000 cycles" in the specs table and "4,000 cycles to 80% capacity" in the battery's store bullets. Manufacturer claim; no test conditions are printed.
Official product page: EcoFlow WAVE 3 Portable Air Conditioner with Heater, EcoFlow US store page, WAVE 3 Add-On Battery Specs (October 15, 2026 capture) Checked Oct 15, 2026 · Earlier documentOfficial store listing: EcoFlow store Checked Oct 15, 2026 · Earlier document
Location: WAVE 3 Add-On Battery Specs, Cycle Life
Documented
Battery weight: 9.7 kg21 lb converted
Official product page
Sources
Printed as "Net Weight Approximately 21.4 lb (9.7 kg)", an approximate figure.
Official product page: EcoFlow WAVE 3 Portable Air Conditioner with Heater, EcoFlow US store page, WAVE 3 Add-On Battery Specs (October 15, 2026 capture) Checked Oct 15, 2026 · Earlier document
Location: WAVE 3 Add-On Battery Specs, Net Weight
Documented
Dimensions: 16.09 L
Calculated: Enclosure volume: W × H × D ÷ 1,000,000
W: 281 × H: 111 × L: 516 mmW: 11.1 × H: 4.37 × L: 20.3 in convertedOfficial product page
Sources
Printed as "Dimensions 20.3×11.1×4.4 in (516×281×111 mm)" with no axis labels; the millimeter figures are kept in printed order as length, width and height.
Official product page: EcoFlow WAVE 3 Portable Air Conditioner with Heater, EcoFlow US store page, WAVE 3 Add-On Battery Specs (October 15, 2026 capture) Checked Oct 15, 2026 · Earlier document
Location: WAVE 3 Add-On Battery Specs, Dimensions
Calculated
Enclosure rating: IP65
Official product page
Sources
Printed as "IP Rating IP65" in the WAVE 3 Add-On Battery Specs table; the air conditioner's own table prints IPX4 for the air conditioner. The page names no test standard.
Official product page: EcoFlow WAVE 3 Portable Air Conditioner with Heater, EcoFlow US store page, WAVE 3 Add-On Battery Specs (October 15, 2026 capture) Checked Oct 15, 2026 · Earlier document
Location: WAVE 3 Add-On Battery Specs, IP Rating
Documented

1 spec not documented yet: usable energyHelp fill in ›

All specs14

Chemistry: LFP
Official product page
Sources
Printed as "Battery Chemistry LFP" in the specs table and "LFP Battery Chemistry" in the battery's store bullets.
Official product page: EcoFlow WAVE 3 Portable Air Conditioner with Heater, EcoFlow US store page, WAVE 3 Add-On Battery Specs (October 15, 2026 capture) Checked Oct 15, 2026 · Earlier documentOfficial store listing: EcoFlow store Checked Oct 15, 2026 · Earlier document
Location: WAVE 3 Add-On Battery Specs, Battery Chemistry
Documented
Nominal energy: 1.02 kWh
Converted: 1024 Wh / 1000 Wh per kWh = 1.024 kWh
Official product page
Sources
Converted: 1024 Wh / 1000 Wh per kWh = 1.024 kWh
Printed as "Battery Capacity 1024Wh 51.2V 20Ah" in the WAVE 3 Add-On Battery Specs table and "1024Wh Capacity" in the battery's store bullets. Manufacturer claim, not an independent test.
Official product page: EcoFlow WAVE 3 Portable Air Conditioner with Heater, EcoFlow US store page, WAVE 3 Add-On Battery Specs (October 15, 2026 capture) Checked Oct 15, 2026 · Earlier documentOfficial store listing: EcoFlow store Checked Oct 15, 2026 · Earlier document
Location: WAVE 3 Add-On Battery Specs, Battery Capacity
Converted
Usable energy: Not documented
Nominal voltage: 51.2 V
Official product page
Sources
Printed as "Battery Capacity 1024Wh 51.2V 20Ah".
Official product page: EcoFlow WAVE 3 Portable Air Conditioner with Heater, EcoFlow US store page, WAVE 3 Add-On Battery Specs (October 15, 2026 capture) Checked Oct 15, 2026 · Earlier document
Location: WAVE 3 Add-On Battery Specs, Battery Capacity
Documented
Rated capacity: 20 Ah
Official product page
Sources
Printed as "Battery Capacity 1024Wh 51.2V 20Ah".
Official product page: EcoFlow WAVE 3 Portable Air Conditioner with Heater, EcoFlow US store page, WAVE 3 Add-On Battery Specs (October 15, 2026 capture) Checked Oct 15, 2026 · Earlier document
Location: WAVE 3 Add-On Battery Specs, Battery Capacity
Documented
Cycle rating: 4,000 cycles
Official product page
Sources
Printed as "Cycle Life 80%+ capacity after 4000 cycles" in the specs table and "4,000 cycles to 80% capacity" in the battery's store bullets. Manufacturer claim; no test conditions are printed.
Official product page: EcoFlow WAVE 3 Portable Air Conditioner with Heater, EcoFlow US store page, WAVE 3 Add-On Battery Specs (October 15, 2026 capture) Checked Oct 15, 2026 · Earlier documentOfficial store listing: EcoFlow store Checked Oct 15, 2026 · Earlier document
Location: WAVE 3 Add-On Battery Specs, Cycle Life
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

WEB
EcoFlow WAVE 3 Portable Air Conditioner with Heater, EcoFlow US store page, WAVE 3 Add-On Battery Specs (October 15, 2026 capture)OfficialEcoFlowOfficial product page
Source details
Revision
Not stated
Revision date
Not stated
Archived copy captured on 2026-10-15.
Location: WAVE 3 Add-On Battery Specs
Retrieved Oct 15, 2026
EcoFlow's own US store page for the WAVE 3 portable air conditioner, captured on October 15, 2026. Read only for its "WAVE 3 Add-On Battery Specs" table, the add-on battery's specification print; the add-on battery's own listing prints bullets only. Manufacturer claims, not independent tests; prices are not used and the page carries no revision date.
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Warranty

Warranty term: 2 years
Converted: 24 months / 12 months per year = 2 years
Official warranty
Sources
Converted: 24 months / 12 months per year = 2 years
Printed as the row "WAVE 3 Add-on Battery | 24" in the Smart Devices Series of the warranty table in the EcoFlow Limited Warranty Policy - United States (us.ecoflow.com/pages/warranty-policy, "Updated on: [ 20,10,2025 ]"), captured on October 23, 2026. The table's column is headed "Warranty Period (refer to months, unless specified)", so "24" is 24 months, shown here as 2 years. The policy says the limited warranty "begins on the date of delivery to the original consumer purchaser and is valid only on products purchased and used in the United States", applies to the original consumer purchase with proof of purchase and/or proof of delivery, and gives standard warranty coverage in the contiguous United States only. The table names no cycle limit, throughput or capacity retention for this item. The record is EcoFlow's US edition (market US; US store SKU EFWAVE3-US-EB-NBox).
Official warranty: EcoFlow Limited Warranty Policy - United States (October 23, 2026 capture) October 20, 2025 · Checked Oct 23, 2026 · Earlier document
Location: Warranty Period table, row "WAVE 3 Add-on Battery"
Converted

Sellers

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ShopSolar

1 review

Listing SKU EFWAVE3-EB

$699Recorded Nov 11, 2026

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Price history

$699

Prices we read at ShopSolar · 5 readings · no change in our readings since Oct 27, 2026

Chart, listings & data

Since Oct 27, 2026 · Listing price (USD)

ShopSolarView listing Paid link.

ShopSolar$699Nov 11, 2026, 3:21 AM PSTLatest check · hover or tap for earlier prices

A break in a line is a gap in our readings: no price is drawn for days we did not read.

Price data

Collected price observations by seller
Checked (UTC)	Seller	Price
Oct 27, 2026, 12:42 PM PDT	ShopSolar Paid link.	$699
Oct 29, 2026, 8:43 AM PDT	ShopSolar Paid link.	$699
Nov 5, 2026, 2:10 AM PST	ShopSolar Paid link.	$699
Nov 7, 2026, 3:11 AM PST	ShopSolar Paid link.	$699
Nov 11, 2026, 3:21 AM PST	ShopSolar Paid link.	$699

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Evidence score

8/100Missing details40% 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 energy disclosure evidence needed; Cell model disclosure evidence needed.

48 V · Format not recorded · Expansion · Rated capacity

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

Warranty term2 years4 / 20

2 years · 20% weight

2 of 10 years, the best documented for an expansion battery (printed by the maker): Anker SOLIX BP2700 Extension battery (2688Wh)

Printed as the row "WAVE 3 Add-on Battery | 24" in the Smart Devices Series of the warranty table in the EcoFlow Limited Warranty Policy - United States (us.ecoflow.com/pages/warranty-policy, "Updated on: [ 20,10,2025 ]"), captured on October 23, 2026. The table's column is headed "Warranty Period (refer to months, unless specified)", so "24" is 24 months, shown here as 2 years. The policy says the limited warranty "begins on the date of delivery to the original consumer purchaser and is valid only on products purchased and used in the United States", applies to the original consumer purchase with proof of purchase and/or proof of delivery, and gives standard warranty coverage in the contiguous United States only. The table names no cycle limit, throughput or capacity retention for this item. The record is EcoFlow's US edition (market US; US store SKU EFWAVE3-US-EB-NBox).

20 / 100 × 20 = 4 points.

Official warranty: EcoFlow Limited Warranty Policy - United States (October 23, 2026 capture) October 20, 2025 · Checked Oct 23, 2026 · Earlier document

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 product page: EcoFlow WAVE 3 Portable Air Conditioner with Heater, EcoFlow US store page, WAVE 3 Add-On Battery Specs (October 15, 2026 capture) Checked Oct 15, 2026 · Earlier documentOfficial store listing: EcoFlow store Checked Oct 15, 2026 · Earlier document

Research pending, 0 points: Certificates, 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.

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Certificates

No certificates on file. Certificate guide

Parts and accessories

No sourced accessories or replacement parts listed yet.

Model history

Model identity

Model: WAVE 3 Add-on Battery

Manufacturer SKU EFWAVE3-US-EB-NBox · US market

No historical observations recorded yet.

Community discussions

No discussions linked yet. Search DIY Solar Forum

Recalls / legal notices

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

EcoFlowProducts, reviews and history

3.5 (18)

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