{
  "entityType": "expansion_battery",
  "id": "ecoflow-delta-2-smart-extra-battery",
  "canonicalUrl": "https://agentretrievalindex.com/expansion-batteries/ecoflow-delta-2-smart-extra-battery/",
  "jsonUrl": "https://agentretrievalindex.com/expansion-batteries/ecoflow-delta-2-smart-extra-battery.json",
  "name": "EcoFlow DELTA 2 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": "1,024 Wh LiFePO4 add-on battery for the EcoFlow DELTA 2, 9.5 kg, the smallest and lightest unit in this family. Charges only through the host and has no outlets. Release status is unclear: the US product page is delisted, so specs come from EcoFlow's Canada and UK pages plus the official manual.",
  "description": "The EcoFlow DELTA 2 Smart Extra Battery is a 1,024 Wh LiFePO4 add-on that roughly doubles the storage of an EcoFlow DELTA 2. At 9.5 kg it is the smallest and lightest expansion battery indexed here. It has no outlets and charges only through its host; one extra battery connects per DELTA 2. Its US market availability is unclear: the US product page returns a 404 and appears delisted, so the specifications here come from EcoFlow's Canada and UK product pages and the official user manual, and releaseStatus is recorded as unclear rather than asserted either way. EcoFlow publishes no amp-hour figure for its extra batteries, so capacityAh is null; the nominal voltage is 51.2 V. Warranty is not published for this unit. A variant hazard applies: the DELTA Max Smart Extra Battery (2,016 Wh) also lists the DELTA 2 as a compatible host, but it is a different, larger SKU and is not merged into this record.",
  "identity": {
    "brand": "EcoFlow",
    "modelName": "DELTA 2 Smart Extra Battery",
    "normalizedSlug": "ecoflow-delta-2-smart-extra-battery",
    "seriesFamily": "DELTA 2",
    "releaseStatus": "unclear",
    "marketRegion": [
      "CA",
      "UK"
    ],
    "officialProductUrl": "https://us.ecoflow.com/products/delta-2-smart-extra-battery",
    "officialManualUrl": "https://websiteoss.ecoflow.com/cms/upload/2022/12/13/EcoFlow%20DELTA%202%20Smart%20Extra%20Battery-User%20Manual%20V1.0%20(EN)_1670905807570.pdf",
    "officialSpecSheetUrl": null
  },
  "compatibility": {
    "officialCompatibilityStatement": "Compatible with the EcoFlow DELTA 2",
    "compatibleHostModels": [
      "EcoFlow DELTA 2"
    ],
    "maxChainable": 1,
    "compatibilityBasis": "Verbatim manufacturer statement only. Never inferred from connector type, brand or capacity."
  },
  "capacity": {
    "capacityWh": 1024,
    "capacityBasis": "This expansion unit alone, not a combined host-plus-expansion system total.",
    "capacityAh": null,
    "nominalVoltageV": 51.2,
    "chemistry": "lifepo4",
    "usableDoDPercent": null
  },
  "integration": {
    "hasOwnOutlets": false,
    "ownOutletsNote": null,
    "chargingInputsNote": "None direct: charges through the host DELTA 2 only. It has no AC or solar input of its own.",
    "rechargeTimeNote": null
  },
  "cycleLife": {
    "cycleLifeCycles": null,
    "cycleLifeDoDPercent": null,
    "cycleLifeConditionsNote": null
  },
  "temperature": {
    "chargeTempRangeC": {
      "minC": 0,
      "maxC": 45
    },
    "dischargeTempRangeC": {
      "minC": -10,
      "maxC": 45
    },
    "storageTempRangeC": {
      "minC": -10,
      "maxC": 45
    }
  },
  "physical": {
    "weightKg": 9.5,
    "dimensionsMm": {
      "l": 400,
      "w": 211,
      "h": 281
    },
    "ingressProtection": null
  },
  "metadata": {
    "sourceUrls": [
      "https://us.ecoflow.com/products/delta-2-smart-extra-battery",
      "https://websiteoss.ecoflow.com/cms/upload/2022/12/13/EcoFlow%20DELTA%202%20Smart%20Extra%20Battery-User%20Manual%20V1.0%20(EN)_1670905807570.pdf"
    ],
    "sourceLastChecked": "2026-08-15",
    "confidenceLevel": "medium",
    "notes": "SKU ZMR330EB. RELEASE STATUS UNCLEAR by decision: the US product page (us.ecoflow.com/products/delta-2-smart-extra-battery) returns 404 and appears delisted, so releaseStatus is recorded as unclear and marketRegion as CA/UK rather than US. officialProductUrl retains the US URL as the canonical product identity even though it currently 404s; the working sources are EcoFlow's Canada and UK product pages and the official manual PDF. confidenceLevel is medium (not high) because the canonical US source is gone and specs come from other-region pages plus the manual. No merchant is recorded: there is no reliable US purchase path, so WhereToBuy renders nothing (same treatment as other entities with no purchase path). capacityWh is this unit's own 1,024 Wh; EcoFlow publishes no amp-hour figure, so capacityAh is null and the Ah x V check does not apply. warrantyYears is null (unpublished). cycleLifeCycles is null (no DoD-qualified figure published). officialCompatibilityStatement is a faithful paraphrase of the sourced host naming on the CA/UK pages and manual; the exact verbatim string was not captured in this pass (see provenance). VARIANT HAZARD: the DELTA Max Smart Extra Battery (2,016 Wh) also lists DELTA 2 as a host but is a different, larger SKU and must not be merged.",
    "variantNotes": "DELTA 2 Smart Extra Battery (ZMR330EB), 1,024 Wh, for the EcoFlow DELTA 2. Distinct from the DELTA Max Smart Extra Battery (2,016 Wh), which also lists the DELTA 2 as a host.",
    "revisionNotes": null
  },
  "provenance": [
    {
      "fieldName": "chemistry",
      "normalizedValue": "lifepo4",
      "rawClaimText": "LiFePO4",
      "sourceUrl": "https://websiteoss.ecoflow.com/cms/upload/2022/12/13/EcoFlow%20DELTA%202%20Smart%20Extra%20Battery-User%20Manual%20V1.0%20(EN)_1670905807570.pdf",
      "sourceType": "official_manual_pdf",
      "dateChecked": "2026-08-15",
      "confidence": "high",
      "notes": "Chemistry is well established from the manual even though US availability is unclear."
    },
    {
      "fieldName": "capacityWh",
      "normalizedValue": 1024,
      "rawClaimText": "1024Wh",
      "sourceUrl": "https://websiteoss.ecoflow.com/cms/upload/2022/12/13/EcoFlow%20DELTA%202%20Smart%20Extra%20Battery-User%20Manual%20V1.0%20(EN)_1670905807570.pdf",
      "sourceType": "official_manual_pdf",
      "dateChecked": "2026-08-15",
      "confidence": "high",
      "notes": "This unit's own energy. NOT a combined-system total."
    },
    {
      "fieldName": "nominalVoltageV",
      "normalizedValue": 51.2,
      "rawClaimText": "51.2V",
      "sourceUrl": "https://websiteoss.ecoflow.com/cms/upload/2022/12/13/EcoFlow%20DELTA%202%20Smart%20Extra%20Battery-User%20Manual%20V1.0%20(EN)_1670905807570.pdf",
      "sourceType": "official_manual_pdf",
      "dateChecked": "2026-08-15",
      "confidence": "high",
      "notes": "EcoFlow publishes no amp-hour rating, so capacityAh is null."
    },
    {
      "fieldName": "weightKg",
      "normalizedValue": 9.5,
      "rawClaimText": null,
      "sourceUrl": "https://websiteoss.ecoflow.com/cms/upload/2022/12/13/EcoFlow%20DELTA%202%20Smart%20Extra%20Battery-User%20Manual%20V1.0%20(EN)_1670905807570.pdf",
      "sourceType": "official_manual_pdf",
      "dateChecked": "2026-08-15",
      "confidence": "medium",
      "notes": "Published weight 9.5 kg; sourced via EcoFlow CA/UK pages and the manual (research handoff, 2026-08-15). Medium because the US canonical page is delisted."
    },
    {
      "fieldName": "dimensionsMm",
      "normalizedValue": [
        400,
        211,
        281
      ],
      "rawClaimText": null,
      "sourceUrl": "https://websiteoss.ecoflow.com/cms/upload/2022/12/13/EcoFlow%20DELTA%202%20Smart%20Extra%20Battery-User%20Manual%20V1.0%20(EN)_1670905807570.pdf",
      "sourceType": "official_manual_pdf",
      "dateChecked": "2026-08-15",
      "confidence": "medium",
      "notes": "400 x 211 x 281 mm; sourced via research handoff (2026-08-15)."
    },
    {
      "fieldName": "officialCompatibilityStatement",
      "normalizedValue": "Compatible with the EcoFlow DELTA 2",
      "rawClaimText": null,
      "sourceUrl": "https://websiteoss.ecoflow.com/cms/upload/2022/12/13/EcoFlow%20DELTA%202%20Smart%20Extra%20Battery-User%20Manual%20V1.0%20(EN)_1670905807570.pdf",
      "sourceType": "official_manual_pdf",
      "dateChecked": "2026-08-15",
      "confidence": "medium",
      "notes": "The DELTA 2 is named as the host on EcoFlow's CA/UK pages and in the manual. Recorded as a faithful paraphrase; the exact verbatim string was not captured in this pass, which is part of why confidence is medium."
    },
    {
      "fieldName": "compatibleHostModels",
      "normalizedValue": [
        "EcoFlow DELTA 2"
      ],
      "rawClaimText": "DELTA 2",
      "sourceUrl": "https://websiteoss.ecoflow.com/cms/upload/2022/12/13/EcoFlow%20DELTA%202%20Smart%20Extra%20Battery-User%20Manual%20V1.0%20(EN)_1670905807570.pdf",
      "sourceType": "official_manual_pdf",
      "dateChecked": "2026-08-15",
      "confidence": "medium",
      "notes": "Single host. One extra battery per DELTA 2."
    },
    {
      "fieldName": "chargeTempRangeC",
      "normalizedValue": [
        0,
        45
      ],
      "rawClaimText": null,
      "sourceUrl": "https://websiteoss.ecoflow.com/cms/upload/2022/12/13/EcoFlow%20DELTA%202%20Smart%20Extra%20Battery-User%20Manual%20V1.0%20(EN)_1670905807570.pdf",
      "sourceType": "official_manual_pdf",
      "dateChecked": "2026-08-15",
      "confidence": "medium",
      "notes": "Charge 0 to 45 C, discharge -10 to 45 C, storage -10 to 45 C; sourced via research handoff (2026-08-15)."
    }
  ],
  "warrantyYears": null,
  "useCases": [
    "Roughly doubling an EcoFlow DELTA 2's storage for camping or short outages",
    "Buyers who want the lightest expansion battery here, where one-person portability matters more than capacity"
  ],
  "strengths": [
    "Lightest and smallest expansion battery indexed here at 9.5 kg",
    "LiFePO4 chemistry with capacity, weight and dimensions published",
    "Simple single-battery pairing with the DELTA 2"
  ],
  "weaknesses": [
    "US market availability is unclear: the US product page is delisted",
    "No warranty figure is published for this unit",
    "No outlets and no direct charging: it works only through a DELTA 2",
    "EcoFlow publishes no amp-hour figure and no depth-of-discharge cycle rating"
  ],
  "merchantLinks": [],
  "merchants": [],
  "updatedAt": "2026-08-15"
}