{"product_id":"bigbattery-ethos-expansion-kit","title":"BigBattery ETHOS Expansion Kits","description":"\u003ch2 class=\"content__summary-title\" style=\"text-align: center;\"\u003e\u003cspan style=\"color: rgb(50, 149, 66);\"\u003e\u003cstrong\u003eBigBattery ETHOS Expansion Kits\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3 class=\"content__summary-title\"\u003e\u003cstrong\u003eProduct Summary:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cdiv class=\"woocommerce-product-details__short-description\"\u003e\n\u003cp\u003eThe ETHOS 2X Expansion Kit adds\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003etwo additional ETHOS battery modules\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eto your existing system, expanding your storage capacity to\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e10.24kWh\u003c\/strong\u003e. Built for seamless integration, this kit gives you more runtime, greater flexibility, and the same reliable performance backed by BigBattery’s 12-Year Warranty.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eKits Includes \u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eETHOS 2x Expansion Kit\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cmeta charset=\"utf-8\"\u003e2 × 48V ETHOS 5.12kWh Stackable Battery Module – FETHS-48051-G1\u003cbr\u003e1 × ETHOS RACK BASE – CNT081\u003cbr\u003e2 × Ethos Parallel Power Cable 4.9 ft (1500mm) – CBL089\u003cbr\u003e1 × Ethos Parallel Comm Cable 4.9 ft (150cm) – CBL096\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cmeta charset=\"utf-8\"\u003e \u003cspan style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eETHOS 3x Expansion Kit\u003c\/strong\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003e3 × 48V ETHOS 5.12kWh Stackable Battery Module – FETHS-48051-G1\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e1 × ETHOS RACK BASE – CNT081\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e2 × Ethos Parallel Power Cable 4.9 ft (1500mm) – CBL089\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e1 × Ethos Parallel Comm Cable 4.9 ft (150cm) – CBL096\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch5\u003e\n\u003cmeta charset=\"utf-8\"\u003e \u003cspan\u003eDownloads \u0026amp; Specifications\u003c\/span\u003e\u003cbr\u003e\u003cmeta charset=\"utf-8\"\u003e\n\u003c\/h5\u003e\n\u003cdiv class=\"table-header\"\u003e\n\u003ch2\u003eBattery Specifications\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-body table-single\"\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eGTIN-12 (U.P.C.):\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e850061252173\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eSystem Voltage:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e48V\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eNominal Voltage:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e51.2V\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eChemistry:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eLiFePO4\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003ekWh Capacity:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e10.24kWh\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eAh Capacity:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e200Ah\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eCharging Voltage Range:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e55.6 – 57V\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eMax Charge Voltage:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e57V\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eOperating Voltage Range:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e48 – 57V\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eSuggested Low Voltage Cutoff:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e48 – 50.8V\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eBMS Cutoff Range:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e42 – 47V\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eCell Configuration:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e16S 2P\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eMax Continuous Discharge Current:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e200A\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eMax Continuous Power:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e10240W\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eMax Discharge Peak Current:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e300A (Max 5 seconds)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eMax Charge Current:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e200A\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eCharge Temperature Range:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e32°F – 113°F (0°C – 45°C)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eDischarge Temperature Range:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e-4°F – 140°F (-20°C – 60°C)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eOptimal Discharge Temperature Range:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e59°F – 95°F (15°C – 35°C)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eStorage Temperature Range (SoC \u0026gt;50%):\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e-4°F – 113°F (-20°C – 45°C)(Max 6 months)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eWeight:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e273 lb (123.8 kg)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eDepth:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e6.7 in (170 mm)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eWidth:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e26.5 in (674 mm)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eHeight:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e43.3 in (1100 mm)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eMax Connections:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eUp to (16) parallel connections per control box\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eProtection Rating:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eIP65 \/ NEMA 4X\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eCommunications:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eCANBus \/ RS485\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eCertifications:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eUL9540A, UL1973, \u0026amp; UN38.3\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-value\"\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cdiv class=\"table-header\"\u003e\n\u003ch2\u003eBattery Downloads\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-body\"\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eSKU#:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eK0698, K0699\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eSpec Sheet:\u003c\/span\u003e\u003ca rel=\"noopener\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2025\/11\/ETHOS-NEW-SpecSheet-1.5-BatteryCB.pdf\" class=\"download-btn\" target=\"_blank\"\u003e\u003cimg alt=\"Download\" src=\"https:\/\/bigbattery.com\/wp-content\/themes\/shoptimizer-child\/template-parts\/product\/assets\/images\/download.png\" decoding=\"async\"\u003eDOWNLOAD\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eUser Manual:\u003c\/span\u003e\u003ca rel=\"noopener\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/05\/White-Cover-ETHOS-BATTERY-USER-MANUAL-4.pdf\" class=\"download-btn\" target=\"_blank\"\u003e\u003cimg alt=\"Download\" src=\"https:\/\/bigbattery.com\/wp-content\/themes\/shoptimizer-child\/template-parts\/product\/assets\/images\/download.png\" decoding=\"async\"\u003eDOWNLOAD\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eUL9540A Certificate:\u003c\/span\u003e\u003ca rel=\"noopener\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/08\/UL9540A-Certificate-1.pdf\" class=\"download-btn\" target=\"_blank\"\u003e\u003cimg alt=\"Download\" src=\"https:\/\/bigbattery.com\/wp-content\/themes\/shoptimizer-child\/template-parts\/product\/assets\/images\/download.png\" decoding=\"async\"\u003eDOWNLOAD\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eUL1973 Certificate:\u003c\/span\u003e\u003ca rel=\"noopener\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/02\/UL1973-ETHOS.pdf\" class=\"download-btn\" target=\"_blank\"\u003e\u003cimg alt=\"Download\" src=\"https:\/\/bigbattery.com\/wp-content\/themes\/shoptimizer-child\/template-parts\/product\/assets\/images\/download.png\" decoding=\"async\"\u003eDOWNLOAD\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eUN38.3 Certificate:\u003c\/span\u003e\u003ca rel=\"noopener\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/08\/48V-ETHOS-DOC-UN38.3.pdf\" class=\"download-btn\" target=\"_blank\"\u003e\u003cimg alt=\"Download\" src=\"https:\/\/bigbattery.com\/wp-content\/themes\/shoptimizer-child\/template-parts\/product\/assets\/images\/download.png\" decoding=\"async\"\u003eDOWNLOAD\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eSafety Data Sheet:\u003c\/span\u003e\u003ca rel=\"noopener\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2023\/11\/SDS_BigBattery_LFP-1.pdf\" class=\"download-btn\" target=\"_blank\"\u003e\u003cimg alt=\"Download\" src=\"https:\/\/bigbattery.com\/wp-content\/themes\/shoptimizer-child\/template-parts\/product\/assets\/images\/download.png\" decoding=\"async\"\u003eDOWNLOAD\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eCEC Listing- BigBattery ETHOS:\u003c\/span\u003e\u003ca rel=\"noopener\" href=\"https:\/\/solarequipment.energy.ca.gov\/Home\/EnergyStorage?ManufacturerID=BigBattery%2C+Inc.\u0026amp;amp;ModelNameID=-1\u0026amp;amp;Submit=Search\u0026amp;amp;Rows=25\" class=\"download-btn\" target=\"_blank\"\u003e\u003cimg alt=\"Go to link\" src=\"https:\/\/bigbattery.com\/wp-content\/themes\/shoptimizer-child\/template-parts\/product\/assets\/images\/gotolink.png\" decoding=\"async\"\u003eGO TO LINK\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ch3 class=\"table-row\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e \u003cstrong\u003eWarranty\u003c\/strong\u003e\n\u003c\/h3\u003e\n\u003cdiv class=\"table-row\"\u003e\u003cspan\u003e\u003cmeta charset=\"utf-8\"\u003eBigBattery batteries are backed by a 12-year warranty, giving you reliable long-term performance and confidence in every charge. Designed for durability and engineered to last, our batteries are built to power your setup for over a decade. For more information, please visit our \u003ca rel=\"noopener\" href=\"https:\/\/bigbattery.com\/policies\/\" target=\"_blank\"\u003epolicy\u003c\/a\u003e page\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"BigBattery","offers":[{"title":"ETHOS 2x Expansion Kit","offer_id":48621075661046,"sku":"KIT0698","price":2790.0,"currency_code":"USD","in_stock":true},{"title":"ETHOS 3x Expansion Kit","offer_id":50445844152566,"sku":"K0699","price":4040.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0549\/3738\/7254\/files\/Screenshot2025-06-26at7.41.01pm.png?v=1754195782","url":"https:\/\/ecopowerit.com\/products\/bigbattery-ethos-expansion-kit","provider":"EcoPowerit","version":"1.0","type":"link"}