{"product_id":"eg4-flexboss21-hybrid-solar-inverter-21kw-pv-16kw-ac-split-phase-4-mppt-scalable-remote-wi-fi-monitoring-inv027","title":"EG4 FlexBOSS21 Hybrid Solar Inverter | 21kW PV \/ 16kW AC | Split-Phase | 4-MPPT | Scalable | Remote Wi-Fi Monitoring","description":"\u003ch6\u003e\u003cstrong\u003eDescription\u003c\/strong\u003e\u003c\/h6\u003e\n\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003e\u003cstrong\u003eThe EG4 FlexBOSS21 is a high-capacity split-phase hybrid inverter engineered for advanced residential and commercial energy systems.\u003c\/strong\u003e With 12kW output and up to 21,000W of PV input, it delivers powerful performance in both on-grid and off-grid setups. Equipped with 3 MPPTs for up to 5 strings, 90A grid feed-through at 120\/240VAC, and seamless integration with the EG4 GridBOSS MID gateway, it offers superior flexibility, smart load management, AC coupling, and generator support. Safety features include rapid shutdown, ground fault and arc fault protection, and industry-leading certifications. With remote monitoring, Wi-Fi connectivity, and mobile alerts, the FlexBOSS21 combines efficiency, scalability, and cutting-edge technology to power modern energy systems with confidence.\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0704\/5283\/8618\/files\/BigBattery_1800_x_700_px_5.png?v=1773496543\" alt=\"\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0704\/5283\/8618\/files\/BigBattery_1800_x_700_px_6.png?v=1773496545\" alt=\"\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0704\/5283\/8618\/files\/BigBattery_1800_x_700_px_7.png?v=1773496547\" alt=\"\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0704\/5283\/8618\/files\/BigBattery_1800_x_700_px_8.png?v=1773496547\" alt=\"\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0704\/5283\/8618\/files\/BigBattery_1800_x_700_px_9.png?v=1773496547\" alt=\"\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0704\/5283\/8618\/files\/BigBattery_1800_x_700_px_10.png?v=1773496545\" alt=\"\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch6\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/h6\u003e\n\u003ch3\u003eInverter Specifications\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eCategory\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNominal AC Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e120\/240VAC | 120\/208VAC (L1\/L2\/N required)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrequency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e60 Hz (Default) | 50 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax AC Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50A @ 240V | 57.7A @ 208V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax AC Input Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e12,000W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax AC Bypass\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e90A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Voltage Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e180 – 270VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e120\/240VAC | 120\/208VAC (L1\/L2\/N required)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax Output Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e66.7A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Frequency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e60 Hz (Default) | 50 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNominal Output Power (Without PV)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e12,000W @ 240V | 12,000W @ 208V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNominal Output Power (With PV)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e16,000W @ 240V | 13,800W @ 208V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Factor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.99 (Full Load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eReactive Power Adjustment Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-0.8 to 0.8 (Leading Adjustable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTotal Harmonic Distortion (THD)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;5% (Full Load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTransfer Time\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20ms (Default) | 10ms (Configurable) | 20ms (Parallel)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRated Output Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e50A @ 240V | 57.7A @ 208V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNominal Output Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e120\/240VAC | 120\/208VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRated Output Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e12,000W @ 240VAC | 12,000W @ 208VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePeak Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e24,000W (0.5 sec) | 18,000W (1 sec) | 15,000W (6 min) | 13,200W (12 min)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Frequency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e60 Hz (Default) | 50 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTotal Harmonic Distortion Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;5%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTransfer Time (Output)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20ms (Default) | 10ms (Configurable) | 20ms (Parallel)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNumber of MPPTs\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInputs per MPPT\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2 (MPPT 1) | 2 (MPPT 2) | 1 (MPPT 3)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax Usable Input Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e26A (MPPT 1) | 26A (MPPT 2) | 15A (MPPT 3)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax Short Circuit Input Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e31A (MPPT 1) | 31A (MPPT 2) | 19A (MPPT 3)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDC Input Voltage Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100 – 600VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUnit Start-Up Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMPPT Operating Voltage Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e120 – 440VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNominal MPPT Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e360VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax Utilized PV Array Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e21,000W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax Recommended PV Input\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e25,000W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum Efficiency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e97% (PV → Grid) | 94.5% (PV → Battery) | 94% (Battery → Grid)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIdle Consumption\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;65W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNominal Battery Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e48VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery Voltage Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e40 – 60VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax Charge \/ Discharge Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e12,000W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRecommended Battery Capacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;300Ah per inverter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating \/ Storage Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-13°F – 140°F (-25°C – 60°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Altitude\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;6,561 ft (2000 m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRelative Humidity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0 – 100%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTypical Noise Emission\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;50 dB @ 3 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDesign Topology\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHigh-Frequency \/ Transformerless\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProtection Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIP65 \/ NEMA 4X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCommunications\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRS485 \/ CANBus \/ WiFi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax Parallel Connections\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e16\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e88 lbs (40 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions (H × W × D)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e30.5 × 22.3 × 11.3 in (775 × 567 × 287 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"EG4","offers":[{"title":"Default Title","offer_id":47671274406106,"sku":"INV027","price":4199.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0704\/5283\/8618\/files\/BigBattery1200x1000px_72.png?v=1773496659","url":"https:\/\/powergenstore.com\/products\/eg4-flexboss21-hybrid-solar-inverter-21kw-pv-16kw-ac-split-phase-4-mppt-scalable-remote-wi-fi-monitoring-inv027","provider":"PowerGen Store","version":"1.0","type":"link"}