{"product_id":"bigbattery-ethos-expansion-kit","title":"BigBattery ETHOS Expansion Kit","description":"\u003cdiv style=\"float: left; padding: 10px 35px 20px 35px;\"\u003e\n\u003cnoscript class=\"loading-lazy\"\u003e\u003ciframe loading=\"lazy\" width=\"640\" height=\"430\" src=\"https:\/\/www.youtube.com\/embed\/b4rCMJxLskU\" title=\"BigBattery ETHOS 3X Expansion Kit\" style=\"max-width: 100%; max-height: 100%;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" allowfullscreen=\"\"\u003e\u003c\/iframe\u003e\u003c\/noscript\u003e \u003cbr\u003e\n\u003c\/div\u003e\n\u003ch2\u003eAdd More Runtime To Your BigBattery ETHOS System Kit With Expanded Battery Storage For Longer Runtime, Energy Independence And Seamless System Growth\u003c\/h2\u003e\n\u003cp\u003eGive your \u003ca title=\"BigBattery ETHOS Energy Storage System\" href=\"https:\/\/outboundpower.com\/products\/bigbattery-ethos-home-lithium-battery-backup-48v-5-1kwh-ul1973-ul9540a\"\u003e\u003cstrong\u003eBigBattery ETHOS Energy Storage System\u003c\/strong\u003e\u003c\/a\u003e more capacity, longer runtime, and greater flexibility with the ETHOS Expansion Kit. Designed to integrate seamlessly with an existing ETHOS setup, this kit makes it easy to increase your stored energy so you can keep more essentials powered when the grid goes down or when your energy needs grow.\u003c\/p\u003e\n\u003cp\u003eWhether you are preparing for longer outages, adding more loads to your backup plan, or simply want more usable energy on hand, the ETHOS Expansion Kit gives you a straightforward path to scale your system. The 2X configuration adds two additional ETHOS battery modules and expands total storage capacity to 10.24kWh, helping you run critical appliances, home systems, and everyday essentials for longer.\u003c\/p\u003e\n\u003cp\u003eBuilt around the same stackable ETHOS battery platform, the expansion kit includes the battery modules, rack base, parallel power cables, and communication cable needed for system expansion. It is built for reliable performance, clean integration, and long-term peace of mind with BigBattery’s 12-Year Warranty.\u003c\/p\u003e\n\u003cp\u003eIf your current ETHOS system is working well but you want more stored energy available when it matters most, this expansion kit is the simple next step.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eBigBattery ETHOS Expansion Kit Features\u003c\/h3\u003e\n\u003ch4\u003eExpandable Battery Capacity So That You Can Store More Backup Power\u003c\/h4\u003e\n\u003cp\u003eThe ETHOS 2X Expansion Kit adds two additional ETHOS battery modules to your existing system, expanding storage capacity to 10.24kWh. That means more stored energy available for outages, peak usage, or everyday backup needs.\u003c\/p\u003e\n\u003ch4\u003eLonger Runtime So That You Can Keep Essentials Powered for Longer\u003c\/h4\u003e\n\u003cp\u003eMore battery capacity gives your ETHOS system the ability to support critical loads for a longer period of time. This is especially useful during extended outages when lights, refrigeration, communication devices, and other essentials need to stay online.\u003c\/p\u003e\n\u003ch4\u003eSeamless ETHOS Integration So That You Can Upgrade Without Starting Over\u003c\/h4\u003e\n\u003cp\u003eThe expansion kit is designed to work with your existing ETHOS Energy Storage System. Instead of replacing your setup, you can build on the system you already have and increase capacity as your power needs grow.\u003c\/p\u003e\n\u003ch4\u003eIncluded Connection Hardware So That You Have the Key Components Needed to Expand\u003c\/h4\u003e\n\u003cp\u003eThe kit includes the rack base, parallel power cables, and parallel communication cable needed for system expansion. This helps simplify the upgrade process by providing the core components required to connect the additional battery modules.\u003c\/p\u003e\n\u003ch4\u003eStackable Battery Design So That You Can Save Space While Increasing Capacity\u003c\/h4\u003e\n\u003cp\u003eETHOS battery modules are built in a stackable format, allowing you to add more storage without requiring a large installation footprint. It is a practical way to increase backup power while keeping your system organized.\u003c\/p\u003e\n\u003ch4\u003eGreater Energy Flexibility So That You Can Better Match Your Home’s Power Needs\u003c\/h4\u003e\n\u003cp\u003eAdding battery capacity gives you more flexibility in how you use stored energy. Whether you are preparing for longer outages or increasing the number of backed-up loads, the expansion kit helps your system better fit your real-world energy demands.\u003c\/p\u003e\n\u003ch4\u003e12-Year Warranty So That You Can Invest With Long-Term Confidence\u003c\/h4\u003e\n\u003cp\u003eThe ETHOS Expansion Kit is backed by BigBattery’s 12-Year Warranty. That added protection helps give you peace of mind when expanding your home energy storage system.\u003c\/p\u003e\n\u003cp data-start=\"7437\" data-end=\"7747\"\u003e \u003c\/p\u003e\n\u003ch3\u003eBigBattery ETHOS Expansion Kit Warranty\u003c\/h3\u003e\n\u003cp\u003eBigBattery provides a 12-year warranty policy, ensuring the absence of defects in materials, workmanship, and performance during the warranty period.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003ch4\u003eETHOS 2x Expansion Kit\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e2 × 48V ETHOS 5.12kWh Stackable Battery Module – FETHS-48051-G1\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1 × ETHOS RACK BASE – CNT081\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e2 × Ethos Parallel Power Cable 4.9 ft (1500mm) – CBL089\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1 × Ethos Parallel Comm Cable 4.9 ft (150cm) – CBL096\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eETHOS 3x Expansion Kit\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003e3 × 48V ETHOS 5.12kWh Stackable Battery Module – FETHS-48051-G1\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1 × ETHOS RACK BASE – CNT081\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e2 × Ethos Parallel Power Cable 4.9 ft (1500mm) – CBL089\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e1 × Ethos Parallel Comm Cable 4.9 ft (150cm) – CBL096\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ctable border=\"1\" cellpadding=\"8\" cellspacing=\"0\" style=\"border-collapse: collapse; max-width: 100%; overflow-x: auto;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 33.4688px;\"\u003e\n\u003cth style=\"background-color: rgb(242, 242, 242); text-align: left; width: 93.75%; height: 33.4688px;\" colspan=\"2\"\u003e\n\u003ch3\u003e\n\u003cspan data-sheets-root=\"1\"\u003e\u003c\/span\u003eBigBattery ETHOS 2X Expansion Kit Specifications\u003cbr\u003e\n\u003c\/h3\u003e\n\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 44.7211%; height: 19.5938px;\"\u003e\u003cstrong\u003eGTIN-12 (U.P.C.)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 49.0289%; height: 19.5938px;\"\u003e850061252173\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 44.7211%; height: 19.5938px;\"\u003e\u003cstrong\u003eSystem Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 49.0289%; height: 19.5938px;\"\u003e48V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 44.7211%; height: 19.5938px;\"\u003e\u003cstrong\u003eNominal Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 49.0289%; height: 19.5938px;\"\u003e51.2V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 44.7211%; height: 19.5938px;\"\u003e\u003cstrong\u003eChemistry\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 49.0289%; height: 19.5938px;\"\u003eLiFePO4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 44.7211%; height: 19.5938px;\"\u003e\u003cstrong\u003ekWh Capacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 49.0289%; height: 19.5938px;\"\u003e10.24kWh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 44.7211%; height: 19.5938px;\"\u003e\u003cstrong\u003eAh Capacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 49.0289%; height: 19.5938px;\"\u003e200Ah\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 44.7211%; height: 19.5938px;\"\u003e\u003cstrong\u003eCharging Voltage Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 49.0289%; height: 19.5938px;\"\u003e55.6 – 57V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 44.7211%; height: 19.5938px;\"\u003e\u003cstrong\u003eMax Charge Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 49.0289%; height: 19.5938px;\"\u003e57V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 44.7211%; height: 19.5938px;\"\u003e\u003cstrong\u003eOperating Voltage Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 49.0289%; height: 19.5938px;\"\u003e48 – 57V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 44.7211%; height: 19.5938px;\"\u003e\u003cstrong\u003eSuggested Low Voltage Cutoff\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 49.0289%; height: 19.5938px;\"\u003e48 – 50.8V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 44.7211%; height: 19.5938px;\"\u003e\u003cstrong\u003eBMS Cutoff Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 49.0289%; height: 19.5938px;\"\u003e42 – 47V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 44.7211%; height: 19.5938px;\"\u003e\u003cstrong\u003eCell Configuration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 49.0289%; height: 19.5938px;\"\u003e16S2P\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 44.7211%; height: 19.5938px;\"\u003e\u003cstrong\u003eMax Continuous Discharge Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 49.0289%; height: 19.5938px;\"\u003e200A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 44.7211%; height: 19.5938px;\"\u003e\u003cstrong\u003eMax Continuous Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 49.0289%; height: 19.5938px;\"\u003e10240W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 44.7211%; height: 19.5938px;\"\u003e\u003cstrong\u003eMax Discharge Peak Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 49.0289%; height: 19.5938px;\"\u003e300A (Max 5 seconds)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 44.7211%; height: 19.5938px;\"\u003e\u003cstrong\u003eMax Charge Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 49.0289%; height: 19.5938px;\"\u003e200A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 44.7211%; height: 19.5938px;\"\u003e\u003cstrong\u003eCharge Temperature Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 49.0289%; height: 19.5938px;\"\u003e32°F – 113°F (0°C – 45°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 44.7211%; height: 19.5938px;\"\u003e\u003cstrong\u003eDischarge Temperature Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 49.0289%; height: 19.5938px;\"\u003e-4°F – 140°F (-20°C – 60°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 44.7211%; height: 39.1875px;\"\u003e\u003cstrong\u003eOptimal Discharge Temperature Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 49.0289%; height: 39.1875px;\"\u003e59°F – 95°F (15°C – 35°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 44.7211%; height: 19.5938px;\"\u003e\u003cstrong\u003eStorage Temperature Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 49.0289%; height: 19.5938px;\"\u003e-4°F – 113°F (-20°C – 45°C) (Max 6 months)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 44.7211%; height: 19.5938px;\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 49.0289%; height: 19.5938px;\"\u003e273 lb (123.8 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 44.7211%; height: 19.5938px;\"\u003e\u003cstrong\u003eDepth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 49.0289%; height: 19.5938px;\"\u003e6.7 in (170 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 44.7211%; height: 19.5938px;\"\u003e\u003cstrong\u003eWidth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 49.0289%; height: 19.5938px;\"\u003e26.5 in (674 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 44.7211%; height: 19.5938px;\"\u003e\u003cstrong\u003eHeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 49.0289%; height: 19.5938px;\"\u003e43.3 in (1100 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.1875px;\"\u003e\n\u003ctd style=\"width: 44.7211%; height: 39.1875px;\"\u003e\u003cstrong\u003eMax Connections\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 49.0289%; height: 39.1875px;\"\u003eUp to 16 parallel connections per control box\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 44.7211%; height: 19.5938px;\"\u003e\u003cstrong\u003eProtection Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 49.0289%; height: 19.5938px;\"\u003eIP65 \/ NEMA 4X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 44.7211%; height: 19.5938px;\"\u003e\u003cstrong\u003eCommunications\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 49.0289%; height: 19.5938px;\"\u003eCANBus \/ RS485\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.5938px;\"\u003e\n\u003ctd style=\"width: 44.7211%; height: 19.5938px;\"\u003e\u003cstrong\u003eCertifications\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 49.0289%; height: 19.5938px;\"\u003eUL9540A, UL1973, \u0026amp; UN38.3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp data-is-only-node=\"\" data-is-last-node=\"\" data-end=\"7558\" data-start=\"7226\"\u003e \u003c\/p\u003e\n\u003ch3 data-end=\"7558\" data-start=\"7226\"\u003eBigBattery ETHOS Expansion Kit Manual\u003c\/h3\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003ca rel=\"noopener\" title=\"BigBattery ETHOS 3X Expansion Kit\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0643\/9128\/2937\/files\/BigBattery_ETHOS_3X_Expansion_Kit_Manual.pdf?v=1776123414\" target=\"_blank\"\u003e\u003cimg style=\"float: none;\" alt=\"BigBattery_ETHOS_3X_Expansion_Kit_Manual\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0643\/9128\/2937\/files\/BigBattery_ETHOS_3X_Expansion_Kit_Manual_100x100.jpg?v=1776123414\"\u003e\u003c\/a\u003e\u003c\/div\u003e\n\u003cp data-start=\"7749\" data-end=\"7945\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e \u003c\/p\u003e","brand":"BigBattery","offers":[{"title":"ETHOS 2x Expansion Kit","offer_id":48501804794105,"sku":"K0698","price":2790.0,"currency_code":"USD","in_stock":true},{"title":"ETHOS 3x Expansion Kit","offer_id":48501804826873,"sku":"K0699","price":4040.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0643\/9128\/2937\/files\/BigBattery_ETHOS_Expansion_Kit.jpg?v=1780963351","url":"https:\/\/outboundpower.com\/products\/bigbattery-ethos-expansion-kit","provider":"Outbound Power","version":"1.0","type":"link"}