{"product_id":"eg4-flexboss21-12kw-21kpv-hybrid-solar-inverter","title":"BigBattery EG4 FlexBOSS21 12kW 21kPV Hybrid Solar Inverter","description":"\u003cp data-start=\"254\" data-end=\"850\"\u003eThe \u003cstrong data-start=\"258\" data-end=\"292\"\u003eEG4 FlexBOSS21 Hybrid Inverter\u003c\/strong\u003e is a powerful all-in-one solar inverter designed for advanced residential and small commercial energy systems. Delivering \u003cstrong data-start=\"415\" data-end=\"483\"\u003e12 kW continuous AC output and up to 21 kW usable solar PV input\u003c\/strong\u003e, this inverter provides exceptional flexibility for grid-tied, off-grid, and hybrid solar installations. With \u003cstrong data-start=\"594\" data-end=\"626\"\u003esplit-phase 120\/240 V output\u003c\/strong\u003e and integrated battery compatibility, the FlexBOSS21 allows homeowners and installers to build scalable energy storage systems that support whole-home loads and reliable backup power. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"852\" data-end=\"1435\"\u003eEngineered with \u003cstrong data-start=\"868\" data-end=\"930\"\u003ethree MPPT solar trackers supporting up to five PV strings\u003c\/strong\u003e, the FlexBOSS21 maximizes solar production from multiple panel orientations. Advanced features including \u003cstrong data-start=\"1036\" data-end=\"1126\"\u003e90A grid feed-through, generator compatibility, AC coupling, and smart load management\u003c\/strong\u003e make it an ideal solution for modern solar installations. With built-in \u003cstrong data-start=\"1199\" data-end=\"1289\"\u003eWi-Fi monitoring, RS485\/CAN communications, and the ability to parallel up to 16 units\u003c\/strong\u003e, the FlexBOSS21 delivers a scalable and intelligent foundation for high-performance solar energy 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-section-id=\"1eu1x9\" data-start=\"3955\" data-end=\"4003\"\u003e(1) \u003cstrong data-start=\"3961\" data-end=\"4001\"\u003eEG4 FlexBOSS21 Hybrid Solar Inverter\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1bqe8mq\" data-start=\"4004\" data-end=\"4055\"\u003eWall mounting bracket and installation hardware\u003c\/li\u003e\n\u003cli data-section-id=\"zve95i\" data-start=\"4056\" data-end=\"4118\"\u003eCommunication ports for battery and monitoring connections\u003c\/li\u003e\n\u003cli data-section-id=\"vxcy08\" data-start=\"4119\" data-end=\"4150\"\u003eWi-Fi monitoring capability\u003c\/li\u003e\n\u003cli data-section-id=\"5smnmu\" data-start=\"4151\" data-end=\"4195\"\u003eUser manual and installation documentation\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 FlexBOSS21 Hybrid Inverter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eEG4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContinuous AC Output\u003c\/td\u003e\n\u003ctd\u003e12,000 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Power with PV\u003c\/td\u003e\n\u003ctd\u003eUp to 16,000 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeak Output Power\u003c\/td\u003e\n\u003ctd\u003e24,000 W (short surge)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum PV Input Power\u003c\/td\u003e\n\u003ctd\u003e21,000 W usable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRecommended PV Input\u003c\/td\u003e\n\u003ctd\u003eUp to 25,000 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAC Output Voltage\u003c\/td\u003e\n\u003ctd\u003e120\/240 V Split Phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAC Frequency\u003c\/td\u003e\n\u003ctd\u003e50 \/ 60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery Voltage\u003c\/td\u003e\n\u003ctd\u003e48 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery Voltage Range\u003c\/td\u003e\n\u003ctd\u003e40 – 60 V\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 Strings Supported\u003c\/td\u003e\n\u003ctd\u003eUp to 5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPPT Voltage Range\u003c\/td\u003e\n\u003ctd\u003e120 – 440 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDC Input Voltage Range\u003c\/td\u003e\n\u003ctd\u003e100 – 600 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Efficiency\u003c\/td\u003e\n\u003ctd\u003eUp to 97%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax AC Bypass Current\u003c\/td\u003e\n\u003ctd\u003e90 A\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\u003eCommunication\u003c\/td\u003e\n\u003ctd\u003eRS485, CANBus, Wi-Fi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eParallel Capability\u003c\/td\u003e\n\u003ctd\u003eUp to 16 units\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection Rating\u003c\/td\u003e\n\u003ctd\u003eIP65 \/ NEMA 4X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e−25°C to 60°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e30.5 × 22.3 × 11.3 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e88 lb (40 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e10 Years\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\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\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\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BigBattery","offers":[{"title":"Default Title","offer_id":47649353334996,"sku":"INV027","price":4199.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0814\/0822\/9588\/files\/EG4_FlexBOSS_21_Front.png?v=1773415460","url":"https:\/\/sitereadysupply.com\/products\/eg4-flexboss21-12kw-21kpv-hybrid-solar-inverter","provider":"Site Ready Supply","version":"1.0","type":"link"}