{"product_id":"bigbattery-eg4-flexboss21-12kw-21kpv-hybrid-inverter","title":"BigBattery - EG4 FlexBOSS21 12kW (21kPV) Hybrid Inverter","description":"\u003ch3 data-start=\"119\" data-end=\"210\"\u003e\u003cstrong data-start=\"119\" data-end=\"134\"\u003eDescription\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp data-start=\"119\" data-end=\"210\"\u003e\u003cbr data-start=\"134\" data-end=\"137\"\u003e\u003cstrong data-start=\"137\" data-end=\"210\"\u003eUnleash Smart, Scalable Power with the EG4 FlexBOSS21 Hybrid Inverter\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"212\" data-end=\"514\" class=\"\"\u003eThe EG4 FlexBOSS21 is a next-generation 12kW hybrid inverter engineered for high-performance energy systems across residential and commercial settings. With a massive 21kW PV input and robust grid-tied and off-grid functionality, this inverter is built to be the foundation of your energy independence.\u003c\/p\u003e\n\u003cp data-start=\"516\" data-end=\"971\" class=\"\"\u003eIts 3 MPPT inputs support up to 5 solar strings, offering superior flexibility for varied roof orientations and maximum solar harvesting. Plus, the FlexBOSS21 handles 90A of grid feed-through at 120\/240VAC, making it a true powerhouse for grid-connected environments. Seamless integration with the EG4 GridBOSS MID power gateway also enables rapid installation, smart load control, AC coupling, and generator support—all from a single, streamlined system.\u003c\/p\u003e\n\u003ch4 data-start=\"973\" data-end=\"989\"\u003e\u003cstrong data-start=\"973\" data-end=\"989\"\u003eKey Features\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp data-start=\"991\" data-end=\"1022\" class=\"\"\u003e\u003cstrong data-start=\"991\" data-end=\"1020\"\u003eMassive PV Input Capacity\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1023\" data-end=\"1146\"\u003e\n\u003cli data-start=\"1023\" data-end=\"1079\" class=\"\"\u003e\n\u003cp data-start=\"1025\" data-end=\"1079\" class=\"\"\u003eSupports up to 21kW PV for large-scale solar systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1080\" data-end=\"1146\" class=\"\"\u003e\n\u003cp data-start=\"1082\" data-end=\"1146\" class=\"\"\u003e3 MPPTs and 5 string support for multi-orientation flexibility\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1148\" data-end=\"1172\" class=\"\"\u003e\u003cstrong data-start=\"1148\" data-end=\"1170\"\u003eHybrid Performance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1173\" data-end=\"1345\"\u003e\n\u003cli data-start=\"1173\" data-end=\"1228\" class=\"\"\u003e\n\u003cp data-start=\"1175\" data-end=\"1228\" class=\"\"\u003e12kW rated power for grid-tied and off-grid systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1229\" data-end=\"1276\" class=\"\"\u003e\n\u003cp data-start=\"1231\" data-end=\"1276\" class=\"\"\u003eHandles 90A grid feed-through at 120\/240VAC\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1277\" data-end=\"1345\" class=\"\"\u003e\n\u003cp data-start=\"1279\" data-end=\"1345\" class=\"\"\u003eCompatible with EG4 GridBOSS MID for rapid setup and integration\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1347\" data-end=\"1382\" class=\"\"\u003e\u003cstrong data-start=\"1347\" data-end=\"1380\"\u003eSmart Load \u0026amp; Power Management\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1383\" data-end=\"1543\"\u003e\n\u003cli data-start=\"1383\" data-end=\"1429\" class=\"\"\u003e\n\u003cp data-start=\"1385\" data-end=\"1429\" class=\"\"\u003eBuilt-in AC coupling and generator support\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1430\" data-end=\"1491\" class=\"\"\u003e\n\u003cp data-start=\"1432\" data-end=\"1491\" class=\"\"\u003eSmart load prioritization for backup and self-consumption\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1492\" data-end=\"1543\" class=\"\"\u003e\n\u003cp data-start=\"1494\" data-end=\"1543\" class=\"\"\u003eMinimizes grid dependence and maximizes savings\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1545\" data-end=\"1574\" class=\"\"\u003e\u003cstrong data-start=\"1545\" data-end=\"1572\"\u003eEnhanced Safety Systems\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1575\" data-end=\"1722\"\u003e\n\u003cli data-start=\"1575\" data-end=\"1604\" class=\"\"\u003e\n\u003cp data-start=\"1577\" data-end=\"1604\" class=\"\"\u003eResponsive rapid shutdown\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1605\" data-end=\"1646\" class=\"\"\u003e\n\u003cp data-start=\"1607\" data-end=\"1646\" class=\"\"\u003eArc fault and ground fault protection\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1647\" data-end=\"1722\" class=\"\"\u003e\n\u003cp data-start=\"1649\" data-end=\"1722\" class=\"\"\u003eMeets top-tier safety certifications for residential and commercial use\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1724\" data-end=\"1749\" class=\"\"\u003e\u003cstrong data-start=\"1724\" data-end=\"1747\"\u003eAdvanced Monitoring\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1750\" data-end=\"1922\"\u003e\n\u003cli data-start=\"1750\" data-end=\"1809\" class=\"\"\u003e\n\u003cp data-start=\"1752\" data-end=\"1809\" class=\"\"\u003eWi-Fi connectivity with updated EG4 monitoring platform\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1810\" data-end=\"1859\" class=\"\"\u003e\n\u003cp data-start=\"1812\" data-end=\"1859\" class=\"\"\u003eRemote management and real-time mobile alerts\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1860\" data-end=\"1922\" class=\"\"\u003e\n\u003cp data-start=\"1862\" data-end=\"1922\" class=\"\"\u003eFull visibility and control over your system’s performance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1924\" data-end=\"1939\" class=\"\"\u003e\u003cstrong data-start=\"1924\" data-end=\"1937\"\u003eIdeal for\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1940\" data-end=\"2077\"\u003e\n\u003cli data-start=\"1940\" data-end=\"1985\" class=\"\"\u003e\n\u003cp data-start=\"1942\" data-end=\"1985\" class=\"\"\u003eResidential solar + storage installations\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"1986\" data-end=\"2042\" class=\"\"\u003e\n\u003cp data-start=\"1988\" data-end=\"2042\" class=\"\"\u003eCommercial buildings and energy-intensive properties\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2043\" data-end=\"2077\" class=\"\"\u003e\n\u003cp data-start=\"2045\" data-end=\"2077\" class=\"\"\u003eScalable hybrid energy systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 dir=\"ltr\" role=\"presentation\"\u003e\u003cspan\u003eWhat's in the Box \u003c\/span\u003e\u003c\/h3\u003e\n\u003cul data-start=\"2106\" data-end=\"2200\"\u003e\n\u003cli data-start=\"2106\" data-end=\"2144\" class=\"\"\u003e\n\u003cp data-start=\"2108\" data-end=\"2144\" class=\"\"\u003e(1) EG4 FlexBOSS21 Hybrid Inverter\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2145\" data-end=\"2180\" class=\"\"\u003e\n\u003cp data-start=\"2147\" data-end=\"2180\" class=\"\"\u003e(1) Mounting \u0026amp; Installation Kit\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"2181\" data-end=\"2200\" class=\"\"\u003e\n\u003cp data-start=\"2183\" data-end=\"2200\" class=\"\"\u003e(1) User Manual\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0707\/6052\/9955\/files\/screencapture-bigbattery-products-eg4-flexboss21-12kw-21kpv-hybrid-inverter-2025-04-12-12_42_27.png?v=1744443940\" alt=\"\"\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eDownloads\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ctable class=\"pp-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"pp-table-cell pp-table-cell-385880c\"\u003e\u003cspan class=\"pp-table-cell-content\"\u003e\u003cspan class=\"pp-table-cell-text\"\u003eSpec Sheet:\u003c\/span\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd class=\"pp-table-cell pp-table-cell-0c642f0 cus-link\"\u003e\u003ca href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2025\/01\/EG4-FlexBoss21-Spec-Sheet.pdf\" target=\"_blank\"\u003e\u003cspan class=\"pp-table-cell-content\"\u003e\u003cspan class=\"pp-table-cell-icon pp-table-cell-icon-before pp-icon\"\u003e\u003ci aria-hidden=\"true\" class=\"far fa-file-pdf\"\u003e\u003c\/i\u003e\u003c\/span\u003e\u003cspan class=\"pp-table-cell-text\"\u003eClick Here\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"pp-table-cell pp-table-cell-854ebbd\"\u003e\u003cspan class=\"pp-table-cell-content\"\u003e\u003cspan class=\"pp-table-cell-text\"\u003eUser Manual:\u003c\/span\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd class=\"pp-table-cell pp-table-cell-5b846f8 cus-link\"\u003e\u003ca href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2025\/01\/FlexBOSS-21-Manual.pdf\" target=\"_blank\"\u003e\u003cspan class=\"pp-table-cell-content\"\u003e\u003cspan class=\"pp-table-cell-icon pp-table-cell-icon-before pp-icon\"\u003e\u003ci aria-hidden=\"true\" class=\"far fa-file-pdf\"\u003e\u003c\/i\u003e\u003c\/span\u003e\u003cspan class=\"pp-table-cell-text\"\u003eClick Here\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"pp-table-cell pp-table-cell-be151b8\"\u003e\u003cspan class=\"pp-table-cell-content\"\u003e\u003cspan class=\"pp-table-cell-text\"\u003eUL1741 Certificate:\u003c\/span\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd class=\"pp-table-cell pp-table-cell-029d514 cus-link\"\u003e\u003ca href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/11\/EG4-FlexBoss21-COC.pdf\" target=\"_blank\"\u003e\u003cspan class=\"pp-table-cell-content\"\u003e\u003cspan class=\"pp-table-cell-icon pp-table-cell-icon-before pp-icon\"\u003e\u003ci aria-hidden=\"true\" class=\"far fa-file-pdf\"\u003e\u003c\/i\u003e\u003c\/span\u003e\u003cspan class=\"pp-table-cell-text\"\u003eClick Here\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"BigBattery","offers":[{"title":"Default Title","offer_id":40800308396067,"sku":"INV027","price":5449.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0707\/6052\/9955\/files\/EG4_FlexBOSS_21_LeftTilt.webp?v=1744443728","url":"https:\/\/kingofgenerators.com\/products\/bigbattery-eg4-flexboss21-12kw-21kpv-hybrid-inverter","provider":"King of Generators","version":"1.0","type":"link"}