Manufacturer and seller images. Configuration examples may include additional equipment.
Image source: EcoFlow RIVER 3 Plus Smart Extra Battery (EB300), product image from EcoFlow's US storePaid link. As an Amazon Associate we earn from qualifying purchases. Price as of Nov 12, 2026, 12:40 PM PST, may change
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product.
CERTAIN CONTENT THAT APPEARS ON THIS SITE COMES FROM AMAZON. THIS CONTENT IS PROVIDED ‘AS IS’ AND IS SUBJECT TO CHANGE OR REMOVAL AT ANY TIME.
Other version: EcoFlow RIVER 3 Plus Smart Extra Battery EB600 (572Wh) · EFEB600The RIVER 3 Plus Smart Extra Battery manual covers EB300 (EF-RV-E01-1) and EB600 (EF-RV-E02-1).
Other version: EcoFlow RIVER 3 Plus Smart Extra Battery · RIVER 3 Plus Smart Extra BatteryEcoFlow's US listing sells 300EB (SKU EFEB300) as a variant of this battery.
EcoFlow's US store SKU for the variant titled "300EB", captured on September 26, 2026; the variant name and the manual's "EB300 (286Wh)" label name the same size.
Official store listing: EcoFlow store Checked · Earlier documentLocation: product.variants[].sku
Documented
Printed as "Cell Chemistry LFP (LiFePO4)" in the EcoFlow RIVER 3 Plus Smart Extra Battery user manual, Specifications, Battery Info, captured on September 26, 2026. Printed once for both versions.
Official user manual: EcoFlow RIVER 3 Plus Smart Extra Battery_User Manual Checked · Earlier documentLocation: Specifications, Battery Info
Documented
Converted: 286 Wh / 1000 Wh per kWh
Printed as "EB300 (286Wh): 286Wh 12.8Ah" in the EcoFlow RIVER 3 Plus Smart Extra Battery user manual, Specifications, EB300 (286Wh) rows, captured on September 26, 2026. The printed 286 Wh expressed in kWh.
Official user manual: EcoFlow RIVER 3 Plus Smart Extra Battery_User Manual Checked · Earlier documentLocation: Specifications, EB300 (286Wh) rows
Converted
Printed as "Rated Voltage 22.4⎓" in the EcoFlow RIVER 3 Plus Smart Extra Battery user manual, Specifications, Battery Info, captured on September 26, 2026. Printed once for both versions.
Official user manual: EcoFlow RIVER 3 Plus Smart Extra Battery_User Manual Checked · Earlier documentLocation: Specifications, Battery Info
Documented
Printed as "EB300 (286Wh): 286Wh 12.8Ah" in the EcoFlow RIVER 3 Plus Smart Extra Battery user manual, Specifications, EB300 (286Wh) rows, captured on September 26, 2026.
Official user manual: EcoFlow RIVER 3 Plus Smart Extra Battery_User Manual Checked · Earlier documentLocation: Specifications, EB300 (286Wh) rows
Documented
Printed as "The battery maintains 80%+ SoH (State of Health) after 3000 cycles at 0.5C/0.5C at 25°C (77°F)" in the EcoFlow RIVER 3 Plus Smart Extra Battery user manual, Specifications, Battery Info, captured on September 26, 2026. Printed once for both versions.
Official user manual: EcoFlow RIVER 3 Plus Smart Extra Battery_User Manual Checked · Earlier documentLocation: Specifications, Battery Info
Documented
Printed as "EB300 (286Wh): Approx. 3.5 kg (7.72 lb)" in the EcoFlow RIVER 3 Plus Smart Extra Battery user manual, Specifications, EB300 (286Wh) rows, captured on September 26, 2026. Printed as approximate.
Official user manual: EcoFlow RIVER 3 Plus Smart Extra Battery_User Manual Checked · Earlier documentLocation: Specifications, EB300 (286Wh) rows
Documented
Printed as "EB300 (286Wh): Approx. 234 x 224 x 110 mm" in the EcoFlow RIVER 3 Plus Smart Extra Battery user manual, Specifications, EB300 (286Wh) rows, captured on September 26, 2026. Printed as width x depth x height; depth is recorded as length.
Official user manual: EcoFlow RIVER 3 Plus Smart Extra Battery_User Manual Checked · Earlier documentLocation: Specifications, EB300 (286Wh) rows
Calculated
Printed as "Storage Temperature −10°C to 45°C" in the EcoFlow RIVER 3 Plus Smart Extra Battery user manual, Specifications, Environment Temperature, captured on September 26, 2026.
Official user manual: EcoFlow RIVER 3 Plus Smart Extra Battery_User Manual Checked · Earlier documentLocation: Specifications, Environment Temperature
Documented
1 spec not documented yet: usable energyHelp fill in ›
Printed as "Cell Chemistry LFP (LiFePO4)" in the EcoFlow RIVER 3 Plus Smart Extra Battery user manual, Specifications, Battery Info, captured on September 26, 2026. Printed once for both versions.
Official user manual: EcoFlow RIVER 3 Plus Smart Extra Battery_User Manual Checked · Earlier documentLocation: Specifications, Battery Info
Documented
Converted: 286 Wh / 1000 Wh per kWh
Printed as "EB300 (286Wh): 286Wh 12.8Ah" in the EcoFlow RIVER 3 Plus Smart Extra Battery user manual, Specifications, EB300 (286Wh) rows, captured on September 26, 2026. The printed 286 Wh expressed in kWh.
Official user manual: EcoFlow RIVER 3 Plus Smart Extra Battery_User Manual Checked · Earlier documentLocation: Specifications, EB300 (286Wh) rows
Converted
Printed as "Rated Voltage 22.4⎓" in the EcoFlow RIVER 3 Plus Smart Extra Battery user manual, Specifications, Battery Info, captured on September 26, 2026. Printed once for both versions.
Official user manual: EcoFlow RIVER 3 Plus Smart Extra Battery_User Manual Checked · Earlier documentLocation: Specifications, Battery Info
Documented
Printed as "EB300 (286Wh): 286Wh 12.8Ah" in the EcoFlow RIVER 3 Plus Smart Extra Battery user manual, Specifications, EB300 (286Wh) rows, captured on September 26, 2026.
Official user manual: EcoFlow RIVER 3 Plus Smart Extra Battery_User Manual Checked · Earlier documentLocation: Specifications, EB300 (286Wh) rows
Documented
Printed as "The battery maintains 80%+ SoH (State of Health) after 3000 cycles at 0.5C/0.5C at 25°C (77°F)" in the EcoFlow RIVER 3 Plus Smart Extra Battery user manual, Specifications, Battery Info, captured on September 26, 2026. Printed once for both versions.
Official user manual: EcoFlow RIVER 3 Plus Smart Extra Battery_User Manual Checked · Earlier documentLocation: Specifications, Battery Info
Documented
Published claims and calculations are not independently tested lifetime output.
Printed as "EB300 (286Wh): Approx. 3.5 kg (7.72 lb)" in the EcoFlow RIVER 3 Plus Smart Extra Battery user manual, Specifications, EB300 (286Wh) rows, captured on September 26, 2026. Printed as approximate.
Official user manual: EcoFlow RIVER 3 Plus Smart Extra Battery_User Manual Checked · Earlier documentLocation: Specifications, EB300 (286Wh) rows
Documented
Printed as "EB300 (286Wh): Approx. 234 x 224 x 110 mm" in the EcoFlow RIVER 3 Plus Smart Extra Battery user manual, Specifications, EB300 (286Wh) rows, captured on September 26, 2026. Printed as width x depth x height; depth is recorded as length.
Official user manual: EcoFlow RIVER 3 Plus Smart Extra Battery_User Manual Checked · Earlier documentLocation: Specifications, EB300 (286Wh) rows
Calculated
Printed as "Storage Temperature −10°C to 45°C" in the EcoFlow RIVER 3 Plus Smart Extra Battery user manual, Specifications, Environment Temperature, captured on September 26, 2026.
Official user manual: EcoFlow RIVER 3 Plus Smart Extra Battery_User Manual Checked · Earlier documentLocation: Specifications, Environment Temperature
Documented
Printed as "Charge Temperature 0°C-45°C (32°F-113°F)" in the EcoFlow RIVER 3 Plus Smart Extra Battery user manual, Specifications, Environment Temperature, captured on September 26, 2026.
Official user manual: EcoFlow RIVER 3 Plus Smart Extra Battery_User Manual Checked · Earlier documentLocation: Specifications, Environment Temperature
Documented
Printed as "Discharge Temperature −10°C to 45°C (14°F-113°F)" in the EcoFlow RIVER 3 Plus Smart Extra Battery user manual, Specifications, Environment Temperature, captured on September 26, 2026.
Official user manual: EcoFlow RIVER 3 Plus Smart Extra Battery_User Manual Checked · Earlier documentLocation: Specifications, Environment Temperature
Documented
Printed as "EB300 (286Wh): 286Wh 12.8Ah" in the EcoFlow RIVER 3 Plus Smart Extra Battery user manual, Specifications, EB300 (286Wh) rows, captured on September 26, 2026.
Official user manual: EcoFlow RIVER 3 Plus Smart Extra Battery_User Manual Checked · Earlier documentLocation: Specifications, EB300 (286Wh) rows
Documented
Charged Reviews classified this product from the documents it is based on. It is our own grouping, not a manufacturer claim.
Printed as "are LiFePO4 batteries designed to wirelessly connect to the RIVER 3 Plus portable power station. This connection expands the power station’s battery capacity, providing extended power support.". Classified as Portable expansion from the maker's own words for this model.
Official user manual: EcoFlow RIVER 3 Plus Smart Extra Battery_User Manual Checked · Earlier documentLocation: EcoFlow RIVER 3 Plus Smart Extra Battery User Manual, Overview, page 1
Printed as "EB300 (286Wh): 17.5V-25.5V⎓14A Max" in the EcoFlow RIVER 3 Plus Smart Extra Battery user manual, Specifications, Input, Extra Battery Port, EB300 (286Wh), captured on September 26, 2026.
Official user manual: EcoFlow RIVER 3 Plus Smart Extra Battery_User Manual Checked · Earlier documentLocation: Specifications, Input, Extra Battery Port, EB300 (286Wh)
Documented
Printed as "EB300 (286Wh): 17.5V-25.5V⎓14A Max" in the EcoFlow RIVER 3 Plus Smart Extra Battery user manual, Specifications, Input, Extra Battery Port, EB300 (286Wh), captured on September 26, 2026.
Official user manual: EcoFlow RIVER 3 Plus Smart Extra Battery_User Manual Checked · Earlier documentLocation: Specifications, Input, Extra Battery Port, EB300 (286Wh)
Documented
Printed as "EB300 (286Wh): 17.5V-25.5V⎓33A Max" in the EcoFlow RIVER 3 Plus Smart Extra Battery user manual, Specifications, Output, Extra Battery Port, EB300 (286Wh), captured on September 26, 2026.
Official user manual: EcoFlow RIVER 3 Plus Smart Extra Battery_User Manual Checked · Earlier documentLocation: Specifications, Output, Extra Battery Port, EB300 (286Wh)
Documented
Printed as "EB300 (286Wh): 17.5V-25.5V⎓33A Max" in the EcoFlow RIVER 3 Plus Smart Extra Battery user manual, Specifications, Output, Extra Battery Port, EB300 (286Wh), captured on September 26, 2026.
Official user manual: EcoFlow RIVER 3 Plus Smart Extra Battery_User Manual Checked · Earlier documentLocation: Specifications, Output, Extra Battery Port, EB300 (286Wh)
Documented
Published claims and calculations, not independent test results.
Location: Specifications
Retrieved
EcoFlow's own user manual PDF. EcoFlow's online manual page https://manuals.ecoflow.com/us/product/river-3-plus-smart-extra-battery?lang=en_US links this file. Specification values are the manufacturer's.
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 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/1757646210079/EcoFlow%20RIVER%203%20Plus%20Smart%20Extra%20Battery_User%20Manual.pdf. Copyright and takedown
Embedded dates are file metadata, not independent proof of publication.
SHA-256: 5e1cbac8ac8132d11de91eb93789e6a3abe73fcd730be2da1f8e522fd3be1d1a
Earlier revisions, archived captures and copies published by someone other than the manufacturer. Every one stays reachable.
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 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/1757646210079/EcoFlow%20RIVER%203%20Plus%20Smart%20Extra%20Battery_User%20Manual.pdf. Copyright and takedown
Embedded dates are file metadata, not independent proof of publication.
SHA-256: 5e1cbac8ac8132d11de91eb93789e6a3abe73fcd730be2da1f8e522fd3be1d1a
Printed as the row "RIVER 3 Plus Smart Extra Battery | 5 years" in the Extra Battery 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 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. This record is the EB300 version (Model EF-RV-E01-1), which EcoFlow's US store sells as SKU EFEB300 under its RIVER 3 Plus Smart Extra Battery listing, so this US term applies to it; the row names the product, not a capacity.
Official warranty: EcoFlow Limited Warranty Policy - United States (October 23, 2026 capture) October 20, 2025 · Checked · Earlier documentLocation: Warranty Period table, row "RIVER 3 Plus Smart Extra Battery"
Documented
Affiliate links below. As an Amazon Associate we earn from qualifying purchases. Affiliate disclosure
Price from the Amazon Creators API for the New-condition featured offer. Price checked .
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product.
The seller lists this as a new unit.
Source product page: Amazon listing B0DS2BWFN7, identity checked through the Amazon Creators API Paid link. As an Amazon Associate we earn from qualifying purchases.CheckedPrice for one unit, as listed by the seller. Does not include tax and shipping. Price checked .
The seller lists this as a new unit. Condition checked .
Distributor product page: SanTan Solar product page: EcoFlow RIVER 3 Plus Smart Extra Battery 286 Wh (300) (captured October 15, 2026) Paid link.Checked · Earlier documentProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product.
Prices we read at SanTan Solar · 18 readings from to
Since · Listing price (USD)
A break in a line is a gap in our readings: no price is drawn for days we did not read.
| Checked (UTC) | Seller | Price |
|---|---|---|
| Oct 15, 2026, 3:10 PM PDT | SanTan Solar Paid link. | $159 |
| Oct 17, 2026, 3:01 AM PDT | SanTan Solar Paid link. | $159 |
| Oct 20, 2026, 4:01 AM PDT | SanTan Solar Paid link. | $159 |
| Oct 25, 2026, 2:31 AM PDT | SanTan Solar Paid link. | $159 |
| Oct 26, 2026, 1:06 AM PDT | SanTan Solar Paid link. | $209 |
| Oct 27, 2026, 4:51 AM PDT | SanTan Solar Paid link. | $159 |
| Oct 28, 2026, 3:51 AM PDT | SanTan Solar Paid link. | $159 |
| Oct 29, 2026, 4:01 AM PDT | SanTan Solar Paid link. | $159 |
| Oct 30, 2026, 3:51 AM PDT | SanTan Solar Paid link. | $159 |
| Oct 31, 2026, 3:31 AM PDT | SanTan Solar Paid link. | $159 |
| Nov 1, 2026, 3:41 AM PST | SanTan Solar Paid link. | $159 |
| Nov 2, 2026, 4:01 AM PST | SanTan Solar Paid link. | $159 |
| Nov 3, 2026, 4:11 AM PST | SanTan Solar Paid link. | $159 |
| Nov 4, 2026, 4:51 AM PST | SanTan Solar Paid link. | $159 |
| Nov 6, 2026, 1:06 AM PST | SanTan Solar Paid link. | $209 |
| Nov 8, 2026, 4:30 AM PST | SanTan Solar Paid link. | $159 |
| Nov 11, 2026, 2:21 AM PST | SanTan Solar Paid link. | $159 |
| Nov 12, 2026, 1:25 AM PST | SanTan Solar Paid link. | $209 |
No reviews yet
Own one? A verified review needs a receipt and a serial number photo, and counts 19× in the owner rating.
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.
24 V · Portable expansion · 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.
5 years · 20% weight
5 of 10 years, the best documented for an expansion battery (printed by the maker): Anker SOLIX BP2700 Extension battery (2688Wh)
Printed as the row "RIVER 3 Plus Smart Extra Battery | 5 years" in the Extra Battery 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 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. This record is the EB300 version (Model EF-RV-E01-1), which EcoFlow's US store sells as SKU EFEB300 under its RIVER 3 Plus Smart Extra Battery listing, so this US term applies to it; the row names the product, not a capacity.
50 / 100 × 20 = 10 points.
Official warranty: EcoFlow Limited Warranty Policy - United States (October 23, 2026 capture) October 20, 2025 · Checked · Earlier documentCycle 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 RIVER 3 Plus Smart Extra Battery_User Manual Checked · Earlier documentResearch 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.
No certificates on file. Certificate guide
No sourced accessories or replacement parts listed yet.
The product name the user manual prints beside Model EF-RV-E01-1.
Official user manual: EcoFlow RIVER 3 Plus Smart Extra Battery_User Manual Checked · Earlier documentManufacturer SKU EFEB300 · 2 other versions recorded
No historical observations recorded yet.
No discussions linked yet. Search DIY Solar Forum
No recalls or legal notices on file; this is not a complete recall or court search. All notices · Report a notice
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.
