{"product_id":"eg4-inverter-charger-16000w-48v-120-240vac-21000w-mppt-eg4flexboss21","title":"EG4 Inverter\/Charger 16000W 48V 120\/240VAC 21000W MPPT EG4FLEXBOSS21","description":"\u003ch2\u003e\u003cstrong\u003eEG4 Inverter\/Charger 16000W 48V 120\/240VAC 21000W MPPT EG4FLEXBOSS21\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe EG4 FlexBOSS21 is a powerful and versatile 48V split-phase hybrid inverter designed for residential and light commercial energy storage systems. Engineered to deliver up to 16kW of continuous output, this all-in-one inverter\/charger supports grid-tied, off-grid, and hybrid applications with seamless energy management.\u003c\/p\u003e\n\u003cp\u003eWith support for up to 21kW of PV input and the ability to parallel up to 16 units, the FlexBOSS21 provides scalable, high-performance energy solutions. Advanced monitoring, multiple MPPTs, and closed-loop battery communication ensure optimal system control and efficiency. \u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eKey Technology\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e16kW Continuous Output Power\u003c\/strong\u003e\u003cbr\u003eDelivers strong performance for whole-home and commercial energy applications.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eUp to 21kW PV Input Capacity\u003c\/strong\u003e\u003cbr\u003eSupports large solar arrays without requiring combiner boxes.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e3 Independent MPPTs\u003c\/strong\u003e\u003cbr\u003eProvides flexible solar array design and optimized energy harvesting.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e48V Battery System Compatibility\u003c\/strong\u003e\u003cbr\u003eSupports lithium battery systems with closed-loop communication via CAN\/RS485.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSplit-Phase Output (120\/240V)\u003c\/strong\u003e\u003cbr\u003eDesigned for North American residential power requirements.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eParallel Capability up to 16 Units\u003c\/strong\u003e\u003cbr\u003eScales systems up to 256kW total output capacity. \u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eAdvanced Remote Monitoring\u003c\/strong\u003e\u003cbr\u003eWi-Fi, Ethernet, and cellular connectivity with app-based control and notifications.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRapid Shutdown (RSD) Ready\u003c\/strong\u003e\u003cbr\u003eCompliant with NEC 690.12 requirements for safety.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHigh Efficiency Design\u003c\/strong\u003e\u003cbr\u003eUp to 97% efficiency for optimized energy conversion and system performance.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eBest Uses\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eResidential Solar + Storage Systems\u003c\/strong\u003e\u003cbr\u003eIdeal for whole-home backup and energy independence.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eOff-Grid Applications\u003c\/strong\u003e\u003cbr\u003eSupports standalone systems with battery and solar integration.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCommercial Energy Systems\u003c\/strong\u003e\u003cbr\u003eScalable for larger installations requiring high output capacity.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHybrid Grid-Tied Systems\u003c\/strong\u003e\u003cbr\u003eEnables energy savings, backup power, and grid interaction.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Warranty:\u003c\/strong\u003e 10 Years\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eProduct Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cdiv class=\"TyagGW_tableContainer\"\u003e\n\u003cdiv class=\"group TyagGW_tableWrapper flex w-fit flex-col-reverse\" tabindex=\"-1\"\u003e\n\u003ctable class=\"w-fit min-w-(--thread-content-width)\"\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\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eEG4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eEG4FLEXBOSS21\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProduct Type\u003c\/td\u003e\n\u003ctd\u003eHybrid Inverter \/ Charger\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Output Power\u003c\/td\u003e\n\u003ctd\u003e16 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeak Power\u003c\/td\u003e\n\u003ctd\u003e24 kW (0.5 sec)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery Voltage\u003c\/td\u003e\n\u003ctd\u003e48V (51.2V nominal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax PV Input Power\u003c\/td\u003e\n\u003ctd\u003e21 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax DC Input Voltage\u003c\/td\u003e\n\u003ctd\u003e600 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPPTs\u003c\/td\u003e\n\u003ctd\u003e3 Independent MPPTs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPPT Voltage Range\u003c\/td\u003e\n\u003ctd\u003e120 – 440 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Continuous Output Current\u003c\/td\u003e\n\u003ctd\u003e66.7 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Battery Charge\/Discharge\u003c\/td\u003e\n\u003ctd\u003e250 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAC Output Voltage\u003c\/td\u003e\n\u003ctd\u003e120\/240V Split Phase or 120\/208V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency\u003c\/td\u003e\n\u003ctd\u003e50\/60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEfficiency\u003c\/td\u003e\n\u003ctd\u003eUp to 97%\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\u003eWi-Fi, Ethernet, Cellular, CAN, RS485\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-13°F to 140°F (-25°C to 60°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnclosure Rating\u003c\/td\u003e\n\u003ctd\u003eNEMA 4X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e30.43 × 22.28 × 11.22 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e121 lbs \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting\u003c\/td\u003e\n\u003ctd\u003eWall Mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eUL1741, CSA, IEEE 1547, FCC Part 15 Class B\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eAbout EG4:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eEG4 is a leading provider of advanced energy storage and inverter solutions, offering reliable, scalable, and high-performance products designed for modern solar and backup energy systems.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eHigh-Performance Hybrid Inverter for Scalable Energy Systems\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe EG4 FlexBOSS21 delivers powerful performance, flexible system design, and advanced monitoring capabilities—making it an ideal solution for residential and commercial solar + storage installations.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eWhy Buy From US Solar Supplier\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eUS Solar Supplier is an American-founded company based in Kentucky dedicated to offering top-quality solar components from trusted manufacturers. We provide competitive pricing, dependable inventory, and products backed by warranties you can trust.\u003c\/p\u003e\n\u003cp\u003eOur inventory is updated daily with the latest solar technologies, and our experienced team is ready to assist with product selection, system design, and installation guidance.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003e\u003cstrong\u003eNeed Assistance?\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eHave questions before you order? Call \u003cstrong\u003e1-800-230-7004\u003c\/strong\u003e to speak with our knowledgeable support team. We’re here to help with product details, compatibility questions, or purchasing support.\u003c\/p\u003e","brand":"EG4 Battery","offers":[{"title":"Default Title","offer_id":50000175628586,"sku":"USSSP201-520","price":4199.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0566\/3408\/1340\/files\/prod_image_USSSP201-520_03_2025_EG4.jpg?v=1741423928","url":"https:\/\/ussolarsupplier.com\/products\/eg4-inverter-charger-16000w-48v-120-240vac-21000w-mppt-eg4flexboss21","provider":"US Solar Supplier","version":"1.0","type":"link"}