{"product_id":"bigbattery-eg4-flexboss21-hybrid-inverter-14-3kwh-wallmount-indoor-battery-ess","title":"BigBattery EG4 FlexBOSS21 Hybrid Inverter + 14.3kWh WallMount Indoor Battery ESS","description":"\u003cp data-end=\"986\" data-start=\"360\"\u003eThe \u003cstrong data-end=\"435\" data-start=\"364\"\u003eEG4 WallMount Energy Storage System with FlexBOSS21 Hybrid Inverter\u003c\/strong\u003e delivers a powerful and scalable solar energy solution for residential and small commercial installations. This configuration includes \u003cstrong data-end=\"658\" data-start=\"571\"\u003e1× EG4 FlexBOSS21 hybrid inverter and 1× EG4 280Ah WallMount indoor LiFePO4 battery\u003c\/strong\u003e, providing \u003cstrong data-end=\"708\" data-start=\"670\"\u003e14.3 kWh of lithium energy storage\u003c\/strong\u003e for reliable solar power storage and home backup. The FlexBOSS21 inverter supports \u003cstrong data-end=\"822\" data-start=\"792\"\u003eup to 21 kW solar PV input\u003c\/strong\u003e and delivers \u003cstrong data-end=\"872\" data-start=\"836\"\u003eup to 16 kW AC output with solar\u003c\/strong\u003e, making it ideal for whole-home energy management and large solar arrays. \u003cspan data-state=\"closed\" class=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-end=\"1603\" data-start=\"988\"\u003eThe included \u003cstrong data-end=\"1039\" data-start=\"1001\"\u003eEG4 280Ah WallMount indoor battery\u003c\/strong\u003e uses \u003cstrong data-end=\"1091\" data-start=\"1045\"\u003eLithium Iron Phosphate (LiFePO4) chemistry\u003c\/strong\u003e and delivers \u003cstrong data-end=\"1155\" data-start=\"1105\"\u003e8,000+ charge cycles at 80% depth of discharge\u003c\/strong\u003e, ensuring long-term durability and safe operation. The system integrates \u003cstrong data-end=\"1320\" data-start=\"1229\"\u003ethree MPPT solar trackers, fast 10–20 ms UPS transfer switching, and smart load control\u003c\/strong\u003e, enabling efficient solar energy use and seamless backup during power outages. With integrated monitoring, RS485\/CANBus communication, and scalable expansion options, this ESS provides dependable energy storage for modern solar installations.\u003c\/p\u003e\n\u003ch3 data-end=\"3846\" data-start=\"3829\" data-section-id=\"1m8mqxq\"\u003eWhat’s Included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli data-section-id=\"1qwhyde\" data-start=\"3256\" data-end=\"3304\"\u003e1 × 48V EG4 WallMount Indoor Battery – FEWMT-48143-G1\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1qwhyde\" data-start=\"3256\" data-end=\"3304\"\u003e1 × EG4 Indoor Buildable Conduit Box – CNT100\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1qwhyde\" data-start=\"3256\" data-end=\"3304\"\u003e1 × EG4 FlexBOSS21 16kW (21kPV) Hybrid Inverter – INV027\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 FlexBOSS21 Energy Storage System\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eK0106\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConfiguration\u003c\/td\u003e\n\u003ctd\u003e1× FlexBOSS21 + 1× 280Ah Indoor Battery\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Battery 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 FlexBOSS21 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\u003e16,000W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Solar PV Input\u003c\/td\u003e\n\u003ctd\u003e21,000W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPPT Trackers\u003c\/td\u003e\n\u003ctd\u003e3\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%\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 16\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e10 Years Manufacturer Warranty\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 href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0814\/0822\/9588\/files\/EG4_-Indoor-280Ah-Battery-Specifications-Sheet.pdf?v=1773402877\" 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_-Indoor-280Ah-Battery-Quick-Start-Guide.pdf?v=1773402881\" rel=\"noopener\" target=\"_blank\"\u003eQuick Start Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0814\/0822\/9588\/files\/UL9540A-Certificate-1.pdf?v=1773301116\" target=\"_blank\"\u003e\u003cspan\u003eUL9540A Certificate\u003c\/span\u003e\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca style=\"font-size: 0.875rem;\" rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0814\/0822\/9588\/files\/UL1973-ETHOS.pdf?v=1773301133\" 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 rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0814\/0822\/9588\/files\/EG4-FlexBoss21-Spec-Sheet.pdf?v=1773415350\" 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\/FlexBOSS-21-Manual.pdf?v=1773415366\" 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":47653165367508,"sku":"K0106","price":6825.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0814\/0822\/9588\/files\/Main-6.png?v=1773585327","url":"https:\/\/sitereadysupply.com\/products\/bigbattery-eg4-flexboss21-hybrid-inverter-14-3kwh-wallmount-indoor-battery-ess","provider":"Site Ready Supply","version":"1.0","type":"link"}