Manufacturer and seller images. Configuration examples may include additional equipment.
Image source: Product photo published by EcoFlow on its product page for "EcoFlow RIVER 3 Plus Smart Extra Battery".No sellers found.
Other version: EcoFlow RIVER 3 Plus Smart Extra Battery EB300 (286Wh) · EFEB300EcoFlow's US listing sells 300EB (SKU EFEB300) as a variant of this battery.
Other version: EcoFlow RIVER 3 Plus Smart Extra Battery EB600 (572Wh) · EFEB600EcoFlow's US listing sells 600EB (SKU EFEB600) as a variant of this battery.
Printed as "Cell Chemistry LFP (LiFePO4)" in the EcoFlow RIVER 3 Plus Smart Extra Battery user manual (EB300 EF-RV-E01-1 and EB600 EF-RV-E02-1), Specifications, captured on September 26, 2026. The manual covers EB300 (286Wh) and EB600 (572Wh) and prints this row once for both; the record does not name a version.
Official user manual: EcoFlow RIVER 3 Plus Smart Extra Battery_User Manual Checked · Earlier documentLocation: Specifications
Documented
Printed as "Rated Voltage 22.4⎓" in the EcoFlow RIVER 3 Plus Smart Extra Battery user manual (EB300 EF-RV-E01-1 and EB600 EF-RV-E02-1), Specifications, captured on September 26, 2026. The manual covers EB300 (286Wh) and EB600 (572Wh) and prints this row once for both; the record does not name a version.
Official user manual: EcoFlow RIVER 3 Plus Smart Extra Battery_User Manual Checked · Earlier documentLocation: Specifications
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 (EB300 EF-RV-E01-1 and EB600 EF-RV-E02-1), Specifications, captured on September 26, 2026. The manual covers EB300 (286Wh) and EB600 (572Wh) and prints this row once for both; the record does not name a version.
Official user manual: EcoFlow RIVER 3 Plus Smart Extra Battery_User Manual Checked · Earlier documentLocation: Specifications
Documented
Printed as "Storage Temperature −10°C to 45°C (optimal: 20°C-30°C)" in the EcoFlow RIVER 3 Plus Smart Extra Battery user manual (EB300 EF-RV-E01-1 and EB600 EF-RV-E02-1), Specifications, captured on September 26, 2026. The manual covers EB300 (286Wh) and EB600 (572Wh) and prints this row once for both; the record does not name a version.
Official user manual: EcoFlow RIVER 3 Plus Smart Extra Battery_User Manual Checked · Earlier documentLocation: Specifications
Documented
Printed as "Charge Temperature 0°C-45°C (32°F-113°F)" in the EcoFlow RIVER 3 Plus Smart Extra Battery user manual (EB300 EF-RV-E01-1 and EB600 EF-RV-E02-1), Specifications, captured on September 26, 2026. The manual covers EB300 (286Wh) and EB600 (572Wh) and prints this row once for both; the record does not name a version.
Official user manual: EcoFlow RIVER 3 Plus Smart Extra Battery_User Manual Checked · Earlier documentLocation: Specifications
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 (EB300 EF-RV-E01-1 and EB600 EF-RV-E02-1), Specifications, captured on September 26, 2026. The manual covers EB300 (286Wh) and EB600 (572Wh) and prints this row once for both; the record does not name a version.
Official user manual: EcoFlow RIVER 3 Plus Smart Extra Battery_User Manual Checked · Earlier documentLocation: Specifications
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
3 specs not documented yet: nominal energy, usable energy, dimensionsHelp fill in ›
Printed as "Cell Chemistry LFP (LiFePO4)" in the EcoFlow RIVER 3 Plus Smart Extra Battery user manual (EB300 EF-RV-E01-1 and EB600 EF-RV-E02-1), Specifications, captured on September 26, 2026. The manual covers EB300 (286Wh) and EB600 (572Wh) and prints this row once for both; the record does not name a version.
Official user manual: EcoFlow RIVER 3 Plus Smart Extra Battery_User Manual Checked · Earlier documentLocation: Specifications
Documented
Printed as "Rated Voltage 22.4⎓" in the EcoFlow RIVER 3 Plus Smart Extra Battery user manual (EB300 EF-RV-E01-1 and EB600 EF-RV-E02-1), Specifications, captured on September 26, 2026. The manual covers EB300 (286Wh) and EB600 (572Wh) and prints this row once for both; the record does not name a version.
Official user manual: EcoFlow RIVER 3 Plus Smart Extra Battery_User Manual Checked · Earlier documentLocation: Specifications
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 (EB300 EF-RV-E01-1 and EB600 EF-RV-E02-1), Specifications, captured on September 26, 2026. The manual covers EB300 (286Wh) and EB600 (572Wh) and prints this row once for both; the record does not name a version.
Official user manual: EcoFlow RIVER 3 Plus Smart Extra Battery_User Manual Checked · Earlier documentLocation: Specifications
Documented
Published claims and calculations are not independently tested lifetime output.
Printed as "Storage Temperature −10°C to 45°C (optimal: 20°C-30°C)" in the EcoFlow RIVER 3 Plus Smart Extra Battery user manual (EB300 EF-RV-E01-1 and EB600 EF-RV-E02-1), Specifications, captured on September 26, 2026. The manual covers EB300 (286Wh) and EB600 (572Wh) and prints this row once for both; the record does not name a version.
Official user manual: EcoFlow RIVER 3 Plus Smart Extra Battery_User Manual Checked · Earlier documentLocation: Specifications
Documented
Printed as "Charge Temperature 0°C-45°C (32°F-113°F)" in the EcoFlow RIVER 3 Plus Smart Extra Battery user manual (EB300 EF-RV-E01-1 and EB600 EF-RV-E02-1), Specifications, captured on September 26, 2026. The manual covers EB300 (286Wh) and EB600 (572Wh) and prints this row once for both; the record does not name a version.
Official user manual: EcoFlow RIVER 3 Plus Smart Extra Battery_User Manual Checked · Earlier documentLocation: Specifications
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 (EB300 EF-RV-E01-1 and EB600 EF-RV-E02-1), Specifications, captured on September 26, 2026. The manual covers EB300 (286Wh) and EB600 (572Wh) and prints this row once for both; the record does not name a version.
Official user manual: EcoFlow RIVER 3 Plus Smart Extra Battery_User Manual Checked · Earlier documentLocation: Specifications
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
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
Matched to the catalog record on an exact product-name match; the store publishes no variant SKU for this product.
Location: Store variant SKU —; product handle river-3-plus-smart-extra-battery
Retrieved
Manufacturer-operated store product page, captured byte for byte with a plain HTTPS GET and a desktop user agent. It establishes what the manufacturer published at this URL on the access date for the exact store variant named in the locator: the specification table, the photo and the documents linked from the page. Marketing text, certification wording and stock state on the page remain manufacturer claims that were not independently verified, and no value on it was applied to any other model.
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. The record is documented from EcoFlow's US store page and US store product data for this battery (us.ecoflow.com/products/river-3-plus-smart-extra-battery), so this US term applies to it as sold in the United States; the row names the product, which EcoFlow sells as EB300 and EB600.
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
No sellers found.
No seller price history.
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. The record is documented from EcoFlow's US store page and US store product data for this battery (us.ecoflow.com/products/river-3-plus-smart-extra-battery), so this US term applies to it as sold in the United States; the row names the product, which EcoFlow sells as EB300 and EB600.
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.
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.
