{"product_id":"ecoflow-extra-battery-expansion-adapter","title":"EcoFlow Extra Battery Expansion Adapter for DELTA 3 MAX | Ultra Plus","description":"\u003cstyle\u003e\n\/* ===== ECOFLOW EXTRA BATTERY EXPANSION ADAPTER PRODUCT PAGE CSS ===== *\/\n.hb21-spec-wrap {\n  max-width: 1100px;\n  margin: 0 auto 40px auto;\n  padding: 0 20px;\n  text-align: center;\n}\n\n.hb21-spec-wrap h2,\n.hb21-spec-wrap h3,\n.hb21-spec-wrap p,\n.hb21-spec-wrap li {\n  text-align: center;\n}\n\n.hb21-product-intro {\n  max-width: 920px;\n  margin: 0 auto 30px auto;\n}\n\n.hb21-product-intro h2 {\n  margin: 0 0 14px 0;\n  font-size: 2rem;\n  line-height: 1.2;\n}\n\n.hb21-product-intro p {\n  margin: 0 auto 14px auto;\n  line-height: 1.7;\n  max-width: 900px;\n}\n\n.hb21-spec-grid {\n  display: grid;\n  grid-template-columns: repeat(2, minmax(0, 1fr));\n  gap: 24px;\n  margin-top: 30px;\n  text-align: left;\n}\n\n.hb21-spec-card {\n  background: #f7f7f7;\n  border-radius: 14px;\n  padding: 24px;\n  text-align: left;\n}\n\n.hb21-spec-card h3 {\n  margin: 0 0 16px 0;\n  font-size: 1.25rem;\n  text-align: left;\n}\n\n.hb21-spec-card ul {\n  list-style: none;\n  padding: 0;\n  margin: 0;\n}\n\n.hb21-spec-card li {\n  margin: 0 0 10px 0;\n  line-height: 1.55;\n  text-align: left;\n}\n\n.hb21-spec-card strong {\n  font-weight: 700;\n}\n\n.hb21-spec-card a {\n  color: #0066cc;\n  text-decoration: underline;\n}\n\n.hb21-warranty-note {\n  margin-top: 20px;\n  font-size: 1rem;\n  line-height: 1.6;\n  text-align: left;\n}\n\n.hb21-section {\n  max-width: 1100px;\n  margin: 0 auto;\n  padding: 34px 20px;\n  text-align: center;\n}\n\n.hb21-section h2,\n.hb21-section h3 {\n  font-size: 2rem;\n  line-height: 1.2;\n  font-weight: 700;\n  margin: 0 0 14px 0;\n  text-align: center;\n}\n\n.hb21-section p {\n  max-width: 900px;\n  margin: 0 auto 14px auto;\n  line-height: 1.65;\n  text-align: center;\n}\n\n.hb21-section a,\n.hb21-faq-item a {\n  color: #0066cc;\n  text-decoration: underline;\n}\n\n.hb21-image-full {\n  max-width: 1100px;\n  margin: 0 auto;\n  padding: 14px 20px;\n}\n\n.hb21-image-full img {\n  display: block;\n  width: 100%;\n  height: auto;\n  margin: 0 auto;\n  border-radius: 8px;\n}\n\n.hb21-faq-wrap {\n  max-width: 980px;\n  margin: 40px auto 20px auto;\n  padding: 0 20px;\n  text-align: center;\n}\n\n.hb21-faq-wrap h2 {\n  font-size: 2rem;\n  line-height: 1.2;\n  margin-bottom: 20px;\n  text-align: center;\n}\n\n.hb21-faq-item {\n  background: #f7f7f7;\n  border-radius: 12px;\n  padding: 18px 20px;\n  margin-bottom: 14px;\n  text-align: left;\n}\n\n.hb21-faq-item h3 {\n  margin: 0 0 8px 0;\n  font-size: 1.1rem;\n  line-height: 1.4;\n  text-align: left;\n}\n\n.hb21-faq-item p {\n  margin: 0;\n  line-height: 1.65;\n  text-align: left;\n}\n\n@media (max-width: 989px) {\n  .hb21-spec-grid {\n    grid-template-columns: 1fr;\n  }\n\n  .hb21-product-intro h2,\n  .hb21-section h2,\n  .hb21-section h3,\n  .hb21-faq-wrap h2 {\n    font-size: 1.7rem;\n  }\n}\n\u003c\/style\u003e\n\u003cdiv class=\"hb21-spec-wrap\"\u003e\n\u003cdiv class=\"hb21-product-intro\"\u003e\n\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThe EcoFlow Extra Battery Expansion Adapter is the cable you need to connect a \u003cstrong\u003esecond\u003c\/strong\u003e Smart Extra Battery to the \u003ca href=\"https:\/\/hb21.co.nz\/products\/ecoflow-delta-3-max-plus-portable-power-station-3000w-2048wh\" title=\"EcoFlow DELTA 3 Max Plus Portable Power Station\"\u003eEcoFlow DELTA 3 Max Plus\u003c\/a\u003e or \u003ca href=\"https:\/\/hb21.co.nz\/products\/ecoflow-delta-3-ultra-plus-portable-power-station-3600w-3072wh\" title=\"EcoFlow DELTA 3 Ultra Plus Portable Power Station\"\u003eEcoFlow DELTA 3 Ultra Plus\u003c\/a\u003e. These power stations only have one extra battery output port, so this adapter splits the connection and lets you stack two compatible Smart Extra Batteries through a single cable to unlock the full expandable capacity (up to 10kWh on DELTA 3 Max Plus, up to 12kWh on DELTA 3 Ultra Plus).\u003c\/p\u003e\n\u003cp\u003eYou don't need this adapter for your first extra battery, only when you want to add a second. Compatible Smart Extra Batteries are the EcoFlow DELTA 3 Max Plus Smart Extra Battery (2048Wh) and the \u003ca href=\"https:\/\/hb21.co.nz\/products\/ecoflow-delta-pro-3-smart-extra-battery-4096wh\" title=\"EcoFlow DELTA Pro 3 Smart Extra Battery\"\u003eEcoFlow DELTA Pro 3 Smart Extra Battery (4096Wh)\u003c\/a\u003e. For best results, we recommend using two of the same battery type on the adapter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hb21-spec-grid\"\u003e\n\u003cdiv class=\"hb21-spec-card\"\u003e\n\u003ch3\u003eKey Features:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction:\u003c\/strong\u003e Connects two Smart Extra Batteries to a single Extra Battery Port on the host power station\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Power Stations:\u003c\/strong\u003e DELTA 3 Max Plus, DELTA 3 Ultra Plus\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Extra Batteries:\u003c\/strong\u003e EcoFlow DELTA 3 Max Plus Smart Extra Battery (2048Wh), EcoFlow DELTA Pro 3 Smart Extra Battery (4096Wh)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnection:\u003c\/strong\u003e Single cable to the power station, splits into two outputs for the extra batteries\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Required Per Side:\u003c\/strong\u003e No external power needed, draws through the host power station\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hb21-spec-card\"\u003e\n\u003ch3\u003eWhat's in the Box?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x EcoFlow Extra Battery Expansion Adapter cable\u003c\/li\u003e\n\u003cli\u003e1 x User Documentation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e 1-year warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"hb21-warranty-note\"\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Extra batteries and host power stations are not included. This is a cable\/adapter accessory only. You need the host power station and two compatible Smart Extra Batteries (sold separately) to use this adapter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hb21-section\"\u003e\n\u003ch2\u003eWhy You Need This Adapter\u003c\/h2\u003e\n\u003cp\u003eThe DELTA 3 Max Plus and DELTA 3 Ultra Plus each have one Extra Battery Port on the back. With the standard battery cable that ships with each Smart Extra Battery, you can only connect one extra battery at a time. To unlock the full expandable capacity rating for each power station, you need to connect two extra batteries, and this adapter is the only EcoFlow-approved way to do it.\u003c\/p\u003e\n\u003cp\u003ePlug the single-end side of the adapter into the host power station's Extra Battery Port, then plug each of the two split ends into a compatible Smart Extra Battery. The power station automatically detects and balances both batteries through one connection.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hb21-section\"\u003e\n\u003ch2\u003eMaximum Expandable Capacity Unlocked\u003c\/h2\u003e\n\u003cp\u003eThe DELTA 3 Max Plus has a standalone capacity of 2048Wh. Add two Smart Extra Batteries via this adapter and the total system capacity expands up to 10kWh, enough for multi-day off-grid trips, extended power outages, or heavy daily loads. The DELTA 3 Ultra Plus starts at 3072Wh and expands up to 11kWh with two extra batteries.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hb21-section\"\u003e\n\u003ch2\u003ePairs Well With\u003c\/h2\u003e\n\u003cp\u003eThis adapter is essential for anyone running a two-battery setup on the \u003ca href=\"https:\/\/hb21.co.nz\/products\/ecoflow-delta-3-max-plus-portable-power-station-3000w-2048wh\" title=\"EcoFlow DELTA 3 Max Plus Portable Power Station\"\u003eEcoFlow DELTA 3 Max Plus\u003c\/a\u003e or \u003ca href=\"https:\/\/hb21.co.nz\/products\/ecoflow-delta-3-ultra-plus-portable-power-station-3600w-3072wh\" title=\"EcoFlow DELTA 3 Ultra Plus Portable Power Station\"\u003eEcoFlow DELTA 3 Ultra Plus\u003c\/a\u003e. Compatible batteries include the EcoFlow DELTA 3 Max Plus Smart Extra Battery (2048Wh) and the \u003ca href=\"https:\/\/hb21.co.nz\/products\/ecoflow-delta-pro-3-smart-extra-battery-4096wh\" title=\"EcoFlow DELTA Pro 3 Smart Extra Battery\"\u003eEcoFlow DELTA Pro 3 Smart Extra Battery (4096Wh)\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hb21-faq-wrap\"\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"hb21-faq-item\"\u003e\n\u003ch3\u003eDo I need this adapter to use one extra battery?\u003c\/h3\u003e\n\u003cp\u003eNo. One Smart Extra Battery connects to your DELTA 3 Max Plus or DELTA 3 Ultra Plus with the standard cable that ships with the battery. You only need the Expansion Adapter when you want to connect a \u003cstrong\u003esecond\u003c\/strong\u003e extra battery to reach the maximum expandable capacity.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hb21-faq-item\"\u003e\n\u003ch3\u003eWhich power stations work with this adapter?\u003c\/h3\u003e\n\u003cp\u003eThe Extra Battery Expansion Adapter is designed for the \u003ca href=\"https:\/\/hb21.co.nz\/products\/ecoflow-delta-3-max-plus-portable-power-station-3000w-2048wh\" title=\"EcoFlow DELTA 3 Max Plus Portable Power Station\"\u003eEcoFlow DELTA 3 Max Plus\u003c\/a\u003e and \u003ca href=\"https:\/\/hb21.co.nz\/products\/ecoflow-delta-3-ultra-plus-portable-power-station-3600w-3072wh\" title=\"EcoFlow DELTA 3 Ultra Plus Portable Power Station\"\u003eEcoFlow DELTA 3 Ultra Plus\u003c\/a\u003e only. It is not compatible with the DELTA Pro 3, DELTA Pro, DELTA 2, RIVER series, or any other EcoFlow power stations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hb21-faq-item\"\u003e\n\u003ch3\u003eShould I use two of the same battery type on this adapter?\u003c\/h3\u003e\n\u003cp\u003eFor best results, yes. We recommend running two of the same Smart Extra Battery model (either two DELTA 3 Max Plus or two DELTA Pro 3) on the adapter to ensure even charge and discharge across both batteries. If you want to combine different battery models, contact EcoFlow support or get in touch with us first to confirm your setup will work.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hb21-faq-item\"\u003e\n\u003ch3\u003eWhat warranty does the Extra Battery Expansion Adapter have in NZ?\u003c\/h3\u003e\n\u003cp\u003eThe EcoFlow Extra Battery Expansion Adapter includes a 1-year warranty in New Zealand.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"EcoFlow","offers":[{"title":"Default Title","offer_id":45843674366138,"sku":"EFD3MP-EB-1T2","price":449.0,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0528\/2424\/4410\/files\/ecoflow-ecoflow-extra-battery-expansion-adapter-1224172132.webp?v=1778641839","url":"https:\/\/hb21.co.nz\/products\/ecoflow-extra-battery-expansion-adapter","provider":"HB21","version":"1.0","type":"link"}