{"product_id":"bigbattery-eg4-flexboss18-hybrid-inverter-14-3kwh-wallmount-indoor-battery-ess","title":"BigBattery EG4 FlexBOSS18 Hybrid Inverter + 14.3kWh WallMount Indoor Battery ESS","description":"\u003cp data-end=\"972\" data-start=\"340\"\u003eThe \u003cstrong data-end=\"415\" data-start=\"344\"\u003eEG4 WallMount Energy Storage System with FlexBOSS18 Hybrid Inverter\u003c\/strong\u003e is a powerful solar energy storage solution designed for residential grid-tied, hybrid, or off-grid systems. This configuration includes \u003cstrong data-end=\"636\" data-start=\"553\"\u003e1× FlexBOSS18 hybrid inverter and 1× EG4 280Ah WallMount indoor lithium battery\u003c\/strong\u003e, providing \u003cstrong data-end=\"686\" data-start=\"648\"\u003e14.3 kWh of LiFePO4 energy storage\u003c\/strong\u003e for reliable home backup power and solar energy optimization. The FlexBOSS18 inverter supports \u003cstrong data-end=\"812\" data-start=\"782\"\u003eup to 18 kW solar PV input\u003c\/strong\u003e and delivers \u003cstrong data-end=\"851\" data-start=\"826\"\u003eup to 13 kW AC output\u003c\/strong\u003e, making it ideal for whole-home backup and high-performance solar installations. \u003cspan data-state=\"closed\" class=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-end=\"1549\" data-start=\"974\"\u003eThe included \u003cstrong data-end=\"1025\" data-start=\"987\"\u003eEG4 WallMount 280Ah indoor battery\u003c\/strong\u003e uses \u003cstrong data-end=\"1077\" data-start=\"1031\"\u003eLithium Iron Phosphate (LiFePO4) chemistry\u003c\/strong\u003e, offering \u003cstrong data-end=\"1131\" data-start=\"1088\"\u003e8,000+ cycles at 80% depth of discharge\u003c\/strong\u003e for long-term durability and safety. The system integrates \u003cstrong data-end=\"1292\" data-start=\"1191\"\u003eadvanced battery management, RS485\/CANBus communication, and fast 10–20 ms UPS transfer switching\u003c\/strong\u003e, ensuring seamless backup during grid outages. With \u003cstrong data-end=\"1432\" data-start=\"1345\"\u003eUL-certified safety standards, remote monitoring, and scalable expansion capability\u003c\/strong\u003e, this ESS provides dependable energy storage for modern solar power systems.\u003c\/p\u003e\n\u003ch3 data-section-id=\"1m8mqxq\" data-start=\"3829\" data-end=\"3846\"\u003eWhat’s Included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-end=\"3304\" data-start=\"3256\" data-section-id=\"1qwhyde\"\u003e1 × 48V EG4 WallMount Indoor Battery – FEWMT-48143-G1\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"3304\" data-start=\"3256\" data-section-id=\"1qwhyde\"\u003e1 × EG4 Indoor Buildable Conduit Box – CNT100\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"3304\" data-start=\"3256\" data-section-id=\"1qwhyde\"\u003e1 × EG4 FlexBOSS18 13kW (18kPV) Hybrid Inverter – INV031\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Name\u003c\/td\u003e\n\u003ctd\u003eEG4 WallMount FlexBOSS18 Energy Storage System\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eK0108\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConfiguration\u003c\/td\u003e\n\u003ctd\u003e1× FlexBOSS18 + 1× 280Ah Indoor Battery\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery Capacity\u003c\/td\u003e\n\u003ctd\u003e14.3 kWh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery Chemistry\u003c\/td\u003e\n\u003ctd\u003eLithium Iron Phosphate (LiFePO4)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Voltage\u003c\/td\u003e\n\u003ctd\u003e48V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Battery Voltage\u003c\/td\u003e\n\u003ctd\u003e51.2V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery Capacity\u003c\/td\u003e\n\u003ctd\u003e280Ah\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Continuous Charge \/ Discharge\u003c\/td\u003e\n\u003ctd\u003e200A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Continuous Battery Output\u003c\/td\u003e\n\u003ctd\u003e10,240W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery Protection Rating\u003c\/td\u003e\n\u003ctd\u003eIP20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInverter Model\u003c\/td\u003e\n\u003ctd\u003eEG4 FlexBOSS18 Hybrid Inverter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Output Power\u003c\/td\u003e\n\u003ctd\u003e12,000W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Output with PV\u003c\/td\u003e\n\u003ctd\u003e13,000W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Solar PV Input\u003c\/td\u003e\n\u003ctd\u003e18,000W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPPT Trackers\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePV Voltage Range\u003c\/td\u003e\n\u003ctd\u003e100–600V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAC Output Voltage\u003c\/td\u003e\n\u003ctd\u003e120 \/ 240V Split Phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Output Current\u003c\/td\u003e\n\u003ctd\u003e66.7A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransfer Time\u003c\/td\u003e\n\u003ctd\u003e10–20 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunications\u003c\/td\u003e\n\u003ctd\u003eRS485 \/ CANBus \/ Wi-Fi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInverter Efficiency\u003c\/td\u003e\n\u003ctd\u003eUp to 97.5%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery Cycle Life\u003c\/td\u003e\n\u003ctd\u003e8,000+ cycles @ 80% DoD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Parallel Inverters\u003c\/td\u003e\n\u003ctd\u003eUp to 10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e10 Years (Battery \u0026amp; Inverter)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eWarranty\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eEG4 WallMount Indoor Battery: 10-Year EG4 Manufacturer Warranty\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eDownloads\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eBattery \u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0814\/0822\/9588\/files\/EG4_-Indoor-280Ah-Battery-Specifications-Sheet.pdf?v=1773402877\" target=\"_blank\"\u003e\u003cspan\u003eSpec Sheet\u003c\/span\u003e\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0814\/0822\/9588\/files\/EG4_-Indoor-280Ah-Battery-Quick-Start-Guide.pdf?v=1773402881\" target=\"_blank\"\u003eQuick Start Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0814\/0822\/9588\/files\/UL9540A-Certificate-1.pdf?v=1773301116\" rel=\"noopener\" target=\"_blank\"\u003e\u003cspan\u003eUL9540A Certificate\u003c\/span\u003e\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0814\/0822\/9588\/files\/UL1973-ETHOS.pdf?v=1773301133\" rel=\"noopener\" style=\"font-size: 0.875rem;\" target=\"_blank\"\u003eUL1973 Certificate\u003c\/a\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eInverter\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0814\/0822\/9588\/files\/EG4-FlexBOSS18-Hybrid-Inverter-Spec-Sheet.pdf?v=1773421048\" rel=\"noopener\" target=\"_blank\"\u003e\u003cspan\u003eSpec Sheet\u003c\/span\u003e\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0814\/0822\/9588\/files\/EG4-FlexBOSS18-Hybrid-Inverter-User-Manual.pdf?v=1773421069\" rel=\"noopener\" target=\"_blank\"\u003e\u003cspan\u003eUser Manual\u003c\/span\u003e\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0814\/0822\/9588\/files\/EG4-18KPV-12LV-Certification.pdf?v=1773413860\" rel=\"noopener\" target=\"_blank\"\u003e\u003cspan\u003eUL 1741 Certificate\u003c\/span\u003e\u003c\/a\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BigBattery","offers":[{"title":"Default Title","offer_id":47653148950740,"sku":"K0108","price":6425.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0814\/0822\/9588\/files\/Main-13.png?v=1773584813","url":"https:\/\/sitereadysupply.com\/products\/bigbattery-eg4-flexboss18-hybrid-inverter-14-3kwh-wallmount-indoor-battery-ess","provider":"Site Ready Supply","version":"1.0","type":"link"}