{"product_id":"bigbattery-eg4-flexboss18-hybrid-inverter","title":"EG4 FlexBOSS18 Hybrid Inverter | 13kW 120\/240V Split-Phase","description":"\u003cdiv class=\"product-title\"\u003e\n\u003ch3 class=\"product_title entry-title\"\u003eEG4 FlexBOSS18 Hybrid Solar Inverter | 18kW PV \/ 13kW AC | Split-Phase | 3-MPPT | Scalable | Remote Wi-Fi Monitoring\u003c\/h3\u003e\n\u003cdiv class=\"container\"\u003e\n\u003cdiv class=\"markdown markdown-main-panel enable-updated-hr-color\" id=\"model-response-message-contentr_d4acde9e65dfb4f7\" aria-live=\"polite\" aria-busy=\"false\" dir=\"ltr\"\u003e\n\u003cp data-path-to-node=\"7\"\u003eThe EG4 FlexBOSS18 Hybrid Solar Inverter is a next-generation hybrid inverter designed for residential and commercial energy systems. With up to 18,000W PV input and 13,000W AC input power, it delivers flexible performance for both on-grid and off-grid installations. Built to manage solar, battery, grid, and generator power, it offers advanced energy control, remote monitoring, and scalable system support for modern energy independence. There is a file you can reference named \"EG4 and BigBattery Solar Energy Systems and Components_17\".\u003c\/p\u003e\n\u003cp data-path-to-node=\"8\"\u003e\u003cb data-path-to-node=\"8\" data-index-in-node=\"0\"\u003eProduct Highlights\u003c\/b\u003e\u003c\/p\u003e\n\u003cul data-path-to-node=\"9\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"9,0,0\"\u003e\u003cb data-path-to-node=\"9,0,0\" data-index-in-node=\"0\"\u003eMassive Solar Capacity:\u003c\/b\u003e 18,000W PV input capacity for large residential and commercial solar systems.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"9,1,0\"\u003e\u003cb data-path-to-node=\"9,1,0\" data-index-in-node=\"0\"\u003eHigh AC Throughput:\u003c\/b\u003e 13,000W AC input power for high-capacity hybrid energy setups.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"9,2,0\"\u003e\u003cb data-path-to-node=\"9,2,0\" data-index-in-node=\"0\"\u003eResidential Standards:\u003c\/b\u003e 120\/240V split-phase output for standard and heavy-duty loads.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"9,3,0\"\u003e\u003cb data-path-to-node=\"9,3,0\" data-index-in-node=\"0\"\u003eSolar Optimization:\u003c\/b\u003e Dual MPPT inputs with multiple strings to optimize solar production.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"9,4,0\"\u003e\u003cb data-path-to-node=\"9,4,0\" data-index-in-node=\"0\"\u003eHigh Demand Support:\u003c\/b\u003e 90A grid feed-through for high-demand loads and seamless grid integration.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"9,5,0\"\u003e\u003cb data-path-to-node=\"9,5,0\" data-index-in-node=\"0\"\u003eVersatile Storage:\u003c\/b\u003e 48V battery compatibility for grid-tied, hybrid, and off-grid installations.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"9,6,0\"\u003e\u003cb data-path-to-node=\"9,6,0\" data-index-in-node=\"0\"\u003eRetrofit Ready:\u003c\/b\u003e AC coupling compatibility for system upgrades and retrofits.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"9,7,0\"\u003e\u003cb data-path-to-node=\"9,7,0\" data-index-in-node=\"0\"\u003eAdvanced Orchestration:\u003c\/b\u003e EG4 GridBOSS MID integration for advanced system control.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"9,8,0\"\u003e\u003cb data-path-to-node=\"9,8,0\" data-index-in-node=\"0\"\u003eReal-Time Visibility:\u003c\/b\u003e Remote Wi-Fi monitoring and mobile alerts for real-time system visibility.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"9,9,0\"\u003e\u003cb data-path-to-node=\"9,9,0\" data-index-in-node=\"0\"\u003eAll-Weather Protection:\u003c\/b\u003e IP65 \/ NEMA 4X protection rating for durable installation environments.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"9,10,0\"\u003e\u003cb data-path-to-node=\"9,10,0\" data-index-in-node=\"0\"\u003eGuaranteed Performance:\u003c\/b\u003e 10-year EG4 manufacturer warranty with lifetime USA-based tech support.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-path-to-node=\"10\"\u003e\u003cb data-path-to-node=\"10\" data-index-in-node=\"0\"\u003eKey Features\u003c\/b\u003e\u003c\/p\u003e\n\u003cul data-path-to-node=\"11\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"11,0,0\"\u003e\u003cb data-path-to-node=\"11,0,0\" data-index-in-node=\"0\"\u003eHigh-Capacity Hybrid Performance:\u003c\/b\u003e Supports up to 18,000W PV input and 13,000W AC input power, making it a powerful inverter option for larger systems.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"11,1,0\"\u003e\u003cb data-path-to-node=\"11,1,0\" data-index-in-node=\"0\"\u003eOn-Grid and Off-Grid Flexibility:\u003c\/b\u003e Designed for grid-tied, hybrid, and off-grid installations to support different solar and backup power needs.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"11,2,0\"\u003e\u003cb data-path-to-node=\"11,2,0\" data-index-in-node=\"0\"\u003eSplit-Phase Power Output:\u003c\/b\u003e Provides 120\/240V split-phase output, suitable for both standard household loads and heavier appliances.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"11,3,0\"\u003e\u003cb data-path-to-node=\"11,3,0\" data-index-in-node=\"0\"\u003eDual MPPT Solar Optimization:\u003c\/b\u003e Features 2 MPPTs with multiple inputs per MPPT to help maximize solar production across multiple arrays.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"11,4,0\"\u003e\u003cb data-path-to-node=\"11,4,0\" data-index-in-node=\"0\"\u003eGridBOSS MID Integration:\u003c\/b\u003e Designed to pair with the EG4 GridBOSS MID gateway for advanced load management, generator support, and simplified installation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"11,5,0\"\u003e\u003cb data-path-to-node=\"11,5,0\" data-index-in-node=\"0\"\u003eSmart Energy Management:\u003c\/b\u003e Supports peak shaving, intelligent power distribution, and AC coupling to improve system flexibility.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"11,6,0\"\u003e\u003cb data-path-to-node=\"11,6,0\" data-index-in-node=\"0\"\u003eBuilt-In Safety Protections:\u003c\/b\u003e Includes advanced safety features such as rapid shutdown, ground fault protection, and arc fault protection for code-compliant operation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"11,7,0\"\u003e\u003cb data-path-to-node=\"11,7,0\" data-index-in-node=\"0\"\u003eRemote Monitoring \u0026amp; Alerts:\u003c\/b\u003e Built with Wi-Fi connectivity and mobile alerts so users can track system performance in real time.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"11,8,0\"\u003e\u003cb data-path-to-node=\"11,8,0\" data-index-in-node=\"0\"\u003eScalable System Design:\u003c\/b\u003e Supports up to 10 parallel connections, making it suitable for larger energy system configurations.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"11,9,0\"\u003e\u003cb data-path-to-node=\"11,9,0\" data-index-in-node=\"0\"\u003eDurable Outdoor-Ready Rating:\u003c\/b\u003e Features an IP65 \/ NEMA 4X protection rating, helping protect the unit in demanding installation environments.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"11,10,0\"\u003e\u003cb data-path-to-node=\"11,10,0\" data-index-in-node=\"0\"\u003eMaintenance-Free Operation:\u003c\/b\u003e Designed for dependable performance with no routine servicing required.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c!----\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cimg loading=\"lazy\" decoding=\"async\" width=\"2560\" height=\"1025\" src=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2026\/04\/FlexBoss18-Simple-System-Expansion-Final-scaled-1.webp\" alt=\"EG4 FlexBoss18 Inverter - easily scalable\" class=\"wp-image-212485\" srcset=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2026\/04\/FlexBoss18-Simple-System-Expansion-Final-scaled-1.webp 2560w, https:\/\/bigbattery.com\/wp-content\/uploads\/2026\/04\/FlexBoss18-Simple-System-Expansion-Final-scaled-1-300x120.webp 300w, https:\/\/bigbattery.com\/wp-content\/uploads\/2026\/04\/FlexBoss18-Simple-System-Expansion-Final-scaled-1-1024x410.webp 1024w, https:\/\/bigbattery.com\/wp-content\/uploads\/2026\/04\/FlexBoss18-Simple-System-Expansion-Final-scaled-1-768x308.webp 768w, https:\/\/bigbattery.com\/wp-content\/uploads\/2026\/04\/FlexBoss18-Simple-System-Expansion-Final-scaled-1-1536x615.webp 1536w, https:\/\/bigbattery.com\/wp-content\/uploads\/2026\/04\/FlexBoss18-Simple-System-Expansion-Final-scaled-1-2048x820.webp 2048w, https:\/\/bigbattery.com\/wp-content\/uploads\/2026\/04\/FlexBoss18-Simple-System-Expansion-Final-scaled-1-990x396.webp 990w, https:\/\/bigbattery.com\/wp-content\/uploads\/2026\/04\/FlexBoss18-Simple-System-Expansion-Final-scaled-1-441x177.webp 441w, https:\/\/bigbattery.com\/wp-content\/uploads\/2026\/04\/FlexBoss18-Simple-System-Expansion-Final-scaled-1-813x326.webp 813w, https:\/\/bigbattery.com\/wp-content\/uploads\/2026\/04\/FlexBoss18-Simple-System-Expansion-Final-scaled-1-1300x521.webp 1300w, https:\/\/bigbattery.com\/wp-content\/uploads\/2026\/04\/FlexBoss18-Simple-System-Expansion-Final-scaled-1-150x60.webp 150w\" sizes=\"auto, (max-width: 2560px) 100vw, 2560px\"\u003e\u003cimg loading=\"lazy\" decoding=\"async\" width=\"2560\" height=\"1025\" src=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2026\/04\/EG4-Inverter-Certification-scaled-2.webp\" alt=\"UL Certified - EG4 FlexBoss18 Inverter\" class=\"wp-image-212494\" srcset=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2026\/04\/EG4-Inverter-Certification-scaled-2.webp 2560w, https:\/\/bigbattery.com\/wp-content\/uploads\/2026\/04\/EG4-Inverter-Certification-scaled-2-300x120.webp 300w, https:\/\/bigbattery.com\/wp-content\/uploads\/2026\/04\/EG4-Inverter-Certification-scaled-2-1024x410.webp 1024w, https:\/\/bigbattery.com\/wp-content\/uploads\/2026\/04\/EG4-Inverter-Certification-scaled-2-768x308.webp 768w, https:\/\/bigbattery.com\/wp-content\/uploads\/2026\/04\/EG4-Inverter-Certification-scaled-2-1536x615.webp 1536w, https:\/\/bigbattery.com\/wp-content\/uploads\/2026\/04\/EG4-Inverter-Certification-scaled-2-2048x820.webp 2048w, https:\/\/bigbattery.com\/wp-content\/uploads\/2026\/04\/EG4-Inverter-Certification-scaled-2-990x396.webp 990w, https:\/\/bigbattery.com\/wp-content\/uploads\/2026\/04\/EG4-Inverter-Certification-scaled-2-441x177.webp 441w, https:\/\/bigbattery.com\/wp-content\/uploads\/2026\/04\/EG4-Inverter-Certification-scaled-2-813x326.webp 813w, https:\/\/bigbattery.com\/wp-content\/uploads\/2026\/04\/EG4-Inverter-Certification-scaled-2-1300x521.webp 1300w, https:\/\/bigbattery.com\/wp-content\/uploads\/2026\/04\/EG4-Inverter-Certification-scaled-2-150x60.webp 150w\" sizes=\"auto, (max-width: 2560px) 100vw, 2560px\"\u003e\u003cimg loading=\"lazy\" decoding=\"async\" width=\"2560\" height=\"1025\" src=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2026\/04\/All-EG4-scaled-1.webp\" alt=\"EG4 lineup\" class=\"wp-image-212495\" srcset=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2026\/04\/All-EG4-scaled-1.webp 2560w, https:\/\/bigbattery.com\/wp-content\/uploads\/2026\/04\/All-EG4-scaled-1-300x120.webp 300w, https:\/\/bigbattery.com\/wp-content\/uploads\/2026\/04\/All-EG4-scaled-1-1024x410.webp 1024w, https:\/\/bigbattery.com\/wp-content\/uploads\/2026\/04\/All-EG4-scaled-1-768x308.webp 768w, https:\/\/bigbattery.com\/wp-content\/uploads\/2026\/04\/All-EG4-scaled-1-1536x615.webp 1536w, https:\/\/bigbattery.com\/wp-content\/uploads\/2026\/04\/All-EG4-scaled-1-2048x820.webp 2048w, https:\/\/bigbattery.com\/wp-content\/uploads\/2026\/04\/All-EG4-scaled-1-990x396.webp 990w, https:\/\/bigbattery.com\/wp-content\/uploads\/2026\/04\/All-EG4-scaled-1-441x177.webp 441w, https:\/\/bigbattery.com\/wp-content\/uploads\/2026\/04\/All-EG4-scaled-1-813x326.webp 813w, https:\/\/bigbattery.com\/wp-content\/uploads\/2026\/04\/All-EG4-scaled-1-1300x521.webp 1300w, https:\/\/bigbattery.com\/wp-content\/uploads\/2026\/04\/All-EG4-scaled-1-150x60.webp 150w\" sizes=\"auto, (max-width: 2560px) 100vw, 2560px\"\u003e\u003cimg loading=\"lazy\" decoding=\"async\" width=\"2097\" height=\"840\" src=\"https:\/\/i0.wp.com\/bigbattery.com\/wp-content\/uploads\/2025\/05\/FlexBoss18-allweather-gridboss.gif?fit=2097%2C840\u0026amp;ssl=1\" alt=\"GridBoss\" class=\"wp-image-167965\"\u003e\u003cimg loading=\"lazy\" decoding=\"async\" width=\"2097\" height=\"840\" src=\"https:\/\/i0.wp.com\/bigbattery.com\/wp-content\/uploads\/2025\/05\/FlexBoss18-All-Weather-Rain.gif?fit=2097%2C840\u0026amp;ssl=1\" alt=\"power stays on in rain and snow - EG4 FlexBoss18 Inverter\" class=\"wp-image-165267\"\u003e\u003c\/p\u003e\n\u003ch3 data-section-id=\"xsmcan\" data-start=\"3214\" data-end=\"3231\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"3218\" data-end=\"3231\"\u003eResources\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul data-start=\"3235\" data-end=\"3760\"\u003e\n\u003cli data-section-id=\"g7danu\" data-start=\"3235\" data-end=\"3339\"\u003e\u003ca href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2025\/05\/EG4-FlexBOSS18-Hybrid-Inverter-Spec-Sheet.pdf\"\u003e\u003cstrong data-start=\"3237\" data-end=\"3252\"\u003eSpec Sheet\u003c\/strong\u003e\u003c\/a\u003e\u003c\/li\u003e\n\u003cli data-section-id=\"18h963j\" data-start=\"3342\" data-end=\"3452\"\u003e\u003ca href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2025\/05\/EG4-FlexBOSS18-Hybrid-Inverter-User-Manual.pdf\"\u003e\u003cstrong data-start=\"3344\" data-end=\"3360\"\u003eUser Manual\u003c\/strong\u003e\u003c\/a\u003e\u003c\/li\u003e\n\u003cli data-section-id=\"cmh3jr\" data-start=\"3455\" data-end=\"3549\"\u003e\u003ca href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2025\/05\/EG4-FlexBOSS18-UL-1741-Certificate-of-Compliance.pdf\"\u003e\u003cstrong data-start=\"3457\" data-end=\"3480\"\u003eUL1741 Certificate\u003c\/strong\u003e\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"EG4","offers":[{"title":"Default Title","offer_id":50711362699511,"sku":"INV031","price":3199.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0905\/1868\/3895\/files\/FLEXBOSS18-3.webp?v=1777043721","url":"https:\/\/northgridsupply.com\/products\/bigbattery-eg4-flexboss18-hybrid-inverter","provider":"Northgrid Supply","version":"1.0","type":"link"}