{
  "entityType": "expansion_battery",
  "id": "ecoflow-delta-pro-smart-extra-battery",
  "canonicalUrl": "https://agentretrievalindex.com/expansion-batteries/ecoflow-delta-pro-smart-extra-battery/",
  "jsonUrl": "https://agentretrievalindex.com/expansion-batteries/ecoflow-delta-pro-smart-extra-battery.json",
  "name": "EcoFlow DELTA Pro Smart Extra Battery",
  "brand": "EcoFlow",
  "category": {
    "id": "expansion-batteries",
    "name": "Expansion Batteries",
    "canonicalUrl": "https://agentretrievalindex.com/categories/expansion-batteries/",
    "jsonUrl": "https://agentretrievalindex.com/categories/expansion-batteries.json"
  },
  "summary": "3,600 Wh LiFePO4 add-on battery for the EcoFlow DELTA Pro, 38 kg, in the same wheeled trolley chassis as its host but with no outlets. Charges only through the host's extra-battery port. Up to two chain per DELTA Pro. 5-year warranty.",
  "description": "The EcoFlow DELTA Pro Smart Extra Battery is a 3,600 Wh LiFePO4 add-on that doubles the storage of an EcoFlow DELTA Pro. It uses the same wheeled trolley chassis as the host at 38 kg, but it is battery-only: it has no output outlets and charges through the host's extra-battery port, with no AC or solar input of its own. Up to two extra batteries connect to one DELTA Pro. EcoFlow states the DELTA Pro is compatible with the DELTA Pro Smart Extra Battery, and the unit can also sit alongside the EcoFlow Smart Generator as a companion device rather than a host. EcoFlow does not publish an amp-hour figure for its extra batteries, so capacityAh is null; the nominal voltage is 48 V. EcoFlow quotes cycle life as capacity retention (3,500 cycles to 80 percent and 6,500 to 50 percent) rather than a depth-of-discharge basis, so no DoD-qualified cycle count is stored. Warranty is 5 years.",
  "identity": {
    "brand": "EcoFlow",
    "modelName": "DELTA Pro Smart Extra Battery",
    "normalizedSlug": "ecoflow-delta-pro-smart-extra-battery",
    "seriesFamily": "DELTA Pro",
    "releaseStatus": "current",
    "marketRegion": [
      "US"
    ],
    "officialProductUrl": "https://us.ecoflow.com/products/delta-pro-smart-extra-battery",
    "officialManualUrl": "https://websiteoss.ecoflow.com/website/upload/2022/2/22/DELTA_Pro_Smart_Extra_Battery_User_Manual_1645511757697.pdf",
    "officialSpecSheetUrl": null
  },
  "compatibility": {
    "officialCompatibilityStatement": "DELTA Pro is compatible with the DELTA Pro Smart Extra Battery",
    "compatibleHostModels": [
      "EcoFlow DELTA Pro"
    ],
    "maxChainable": 2,
    "compatibilityBasis": "Verbatim manufacturer statement only. Never inferred from connector type, brand or capacity."
  },
  "capacity": {
    "capacityWh": 3600,
    "capacityBasis": "This expansion unit alone, not a combined host-plus-expansion system total.",
    "capacityAh": null,
    "nominalVoltageV": 48,
    "chemistry": "lifepo4",
    "usableDoDPercent": null
  },
  "integration": {
    "hasOwnOutlets": false,
    "ownOutletsNote": null,
    "chargingInputsNote": "None direct: charges through the host DELTA Pro's extra-battery port. It has no AC or solar input of its own.",
    "rechargeTimeNote": null
  },
  "cycleLife": {
    "cycleLifeCycles": null,
    "cycleLifeDoDPercent": null,
    "cycleLifeConditionsNote": "EcoFlow states 3,500 cycles to 80% capacity and 6,500 cycles to 50% capacity. These are capacity-retention figures, not a depth-of-discharge basis, so no DoD-qualified cycle count is stored."
  },
  "temperature": {
    "chargeTempRangeC": {
      "minC": 0,
      "maxC": 45
    },
    "dischargeTempRangeC": {
      "minC": -10,
      "maxC": 45
    },
    "storageTempRangeC": {
      "minC": -10,
      "maxC": 45
    }
  },
  "physical": {
    "weightKg": 38,
    "dimensionsMm": {
      "l": 635,
      "w": 285,
      "h": 416
    },
    "ingressProtection": null
  },
  "metadata": {
    "sourceUrls": [
      "https://us.ecoflow.com/products/delta-pro-smart-extra-battery",
      "https://websiteoss.ecoflow.com/website/upload/2022/2/22/DELTA_Pro_Smart_Extra_Battery_User_Manual_1645511757697.pdf"
    ],
    "sourceLastChecked": "2026-08-15",
    "confidenceLevel": "high",
    "notes": "Values traced to the EcoFlow DELTA Pro Smart Extra Battery product page and its user manual PDF (2026-08-15), SKU DELTAProEB-US. capacityWh is this unit's own 3,600 Wh; EcoFlow publishes no amp-hour figure for its extra batteries, so capacityAh is null and the Ah x V consistency check does not apply. cycleLifeCycles is null by policy: EcoFlow's 3,500 / 6,500 cycle figures are capacity-retention (to 80% and 50%), not a depth-of-discharge basis. hasOwnOutlets is false: the unit is battery-only and charges through the host's extra-battery port. It can also be used alongside the EcoFlow Smart Generator as a companion device, which is not a host and is not recorded as compatibility.",
    "variantNotes": "DELTA Pro Smart Extra Battery (DELTAProEB-US) for the original DELTA Pro. Not to be confused with the DELTA Pro 3 or DELTA Pro Ultra battery modules, which are different host lines.",
    "revisionNotes": null
  },
  "provenance": [
    {
      "fieldName": "chemistry",
      "normalizedValue": "lifepo4",
      "rawClaimText": "LiFePO4",
      "sourceUrl": "https://us.ecoflow.com/products/delta-pro-smart-extra-battery",
      "sourceType": "official_product_page",
      "dateChecked": "2026-08-15",
      "confidence": "high",
      "notes": ""
    },
    {
      "fieldName": "capacityWh",
      "normalizedValue": 3600,
      "rawClaimText": "3600Wh",
      "sourceUrl": "https://us.ecoflow.com/products/delta-pro-smart-extra-battery",
      "sourceType": "official_product_page",
      "dateChecked": "2026-08-15",
      "confidence": "high",
      "notes": "This unit's own energy. NOT a combined-system total."
    },
    {
      "fieldName": "nominalVoltageV",
      "normalizedValue": 48,
      "rawClaimText": "48V",
      "sourceUrl": "https://websiteoss.ecoflow.com/website/upload/2022/2/22/DELTA_Pro_Smart_Extra_Battery_User_Manual_1645511757697.pdf",
      "sourceType": "official_manual_pdf",
      "dateChecked": "2026-08-15",
      "confidence": "high",
      "notes": "EcoFlow publishes no amp-hour rating for its extra batteries, so capacityAh is null."
    },
    {
      "fieldName": "weightKg",
      "normalizedValue": 38,
      "rawClaimText": null,
      "sourceUrl": "https://websiteoss.ecoflow.com/website/upload/2022/2/22/DELTA_Pro_Smart_Extra_Battery_User_Manual_1645511757697.pdf",
      "sourceType": "official_manual_pdf",
      "dateChecked": "2026-08-15",
      "confidence": "high",
      "notes": "Published weight 38 kg; sourced via research handoff (2026-08-15)."
    },
    {
      "fieldName": "dimensionsMm",
      "normalizedValue": [
        635,
        285,
        416
      ],
      "rawClaimText": null,
      "sourceUrl": "https://websiteoss.ecoflow.com/website/upload/2022/2/22/DELTA_Pro_Smart_Extra_Battery_User_Manual_1645511757697.pdf",
      "sourceType": "official_manual_pdf",
      "dateChecked": "2026-08-15",
      "confidence": "high",
      "notes": "635 x 285 x 416 mm; sourced via research handoff (2026-08-15)."
    },
    {
      "fieldName": "officialCompatibilityStatement",
      "normalizedValue": "DELTA Pro is compatible with the DELTA Pro Smart Extra Battery",
      "rawClaimText": "DELTA Pro is compatible with the DELTA Pro Smart Extra Battery",
      "sourceUrl": "https://us.ecoflow.com/products/delta-pro-smart-extra-battery",
      "sourceType": "official_product_page",
      "dateChecked": "2026-08-15",
      "confidence": "high",
      "notes": "Single host. May also pair with the EcoFlow Smart Generator as a companion device (not a host)."
    },
    {
      "fieldName": "compatibleHostModels",
      "normalizedValue": [
        "EcoFlow DELTA Pro"
      ],
      "rawClaimText": "DELTA Pro",
      "sourceUrl": "https://us.ecoflow.com/products/delta-pro-smart-extra-battery",
      "sourceType": "official_product_page",
      "dateChecked": "2026-08-15",
      "confidence": "high",
      "notes": "Up to two extra batteries per DELTA Pro."
    },
    {
      "fieldName": "warrantyYears",
      "normalizedValue": 5,
      "rawClaimText": null,
      "sourceUrl": "https://us.ecoflow.com/products/delta-pro-smart-extra-battery",
      "sourceType": "official_product_page",
      "dateChecked": "2026-08-15",
      "confidence": "high",
      "notes": "5-year warranty; sourced via research handoff (2026-08-15)."
    },
    {
      "fieldName": "chargeTempRangeC",
      "normalizedValue": [
        0,
        45
      ],
      "rawClaimText": null,
      "sourceUrl": "https://websiteoss.ecoflow.com/website/upload/2022/2/22/DELTA_Pro_Smart_Extra_Battery_User_Manual_1645511757697.pdf",
      "sourceType": "official_manual_pdf",
      "dateChecked": "2026-08-15",
      "confidence": "high",
      "notes": "Charge 0 to 45 C, discharge -10 to 45 C, storage -10 to 45 C; sourced via research handoff (2026-08-15)."
    }
  ],
  "warrantyYears": 5,
  "useCases": [
    "Doubling an EcoFlow DELTA Pro's storage for whole-day or multi-day backup",
    "DELTA Pro systems paired with the EcoFlow Smart Generator for extended off-grid runtime"
  ],
  "strengths": [
    "Large 3,600 Wh LiFePO4 capacity in the same rollable trolley chassis as the host",
    "Wheels and a pull handle make a 38 kg unit movable by one person",
    "5-year warranty",
    "Chemistry, capacity, weight and dimensions all published with a manual PDF"
  ],
  "weaknesses": [
    "No outlets and no direct charging: it works only through a DELTA Pro",
    "EcoFlow publishes no amp-hour figure, so capacityAh cannot be recorded",
    "Bound to the DELTA Pro host line",
    "Cycle life is quoted only as capacity retention, not a depth-of-discharge basis"
  ],
  "merchantLinks": [],
  "merchants": [
    {
      "merchant": "EcoFlow",
      "merchantType": "manufacturer",
      "url": "https://us.ecoflow.com/products/delta-pro-smart-extra-battery",
      "affiliateUrl": null,
      "isAffiliate": false,
      "affiliateProgram": null,
      "isPrimary": true,
      "priceText": null,
      "priceValue": null,
      "currency": null,
      "priceCheckedAt": null,
      "priceStatus": "not_tracked",
      "availability": "unknown",
      "note": null
    }
  ],
  "updatedAt": "2026-08-15"
}