{"product_id":"big-battery-eg4-flexboss21-12kw-21kpv-hybrid-inverter","title":"Big Battery EG4 FlexBOSS21 12kW (21kPV) Hybrid Inverter - INV027","description":"\u003ch2\u003eBig Battery EG4 FlexBOSS21 12kW (21kPV) Hybrid Inverter - INV027\u003c\/h2\u003e\n\u003cp\u003eThe latest development from the EG4 team, the FlexBOSS21 is a cutting-edge, split-phase hybrid inverter designed to be the keystone of any residential or commercial power system. With an incredible 21kW PV input capacity and an array of advanced features, the FlexBOSS21 provides reliable performance day in and day out, in both on-grid and off-grid settings.\u003c\/p\u003e\n\u003cp\u003eThe FlexBOSS21 is one of the highest capacity inverters on the market today, featuring 3 MPPTs supporting up to 5 strings, providing superior flexibility for multi-orientation solar arrays, and the ability to handle 90A of grid feed-through at 120\/240VAC, ensuring robust grid-tied capabilities. Plus, the FlexBOSS21 seamlessly integrates with EG4’s GridBOSS MID power gateway for a cost-effective, streamlined setup, helping to reduce installation time and system startup costs, and when you pair these two units together in your system, you’re able to utilize the smart load management, AC coupling, and generator support features if needed.\u003c\/p\u003e\n\u003cp\u003eBut that’s not all. EG4 understands the value of enhanced safety and visibility when it comes to your power, and the FlexBOSS21 spares no expense, coming equipped with responsive rapid shutdown, ground fault monitoring, and arc fault protection, all backed by industry-leading safety certifications, and with EG4’s updated monitoring software, you get access to remote management, mobile notifications, and convenient Wi-Fi connectivity for your system.\u003c\/p\u003e\n\u003cp\u003eCombining efficiency, scalability, and cutting-edge technology, the FlexBOSS21 is a top-tier solution, with a safety-first design, for those seeking a reliable, powerful inverter to anchor their energy system. Whether for residential or commercial applications, its advanced features and versatile design provide unmatched value and peace of mind. Elevate your energy independence and power your future with the EG4 FlexBOSS21 Hybrid Inverter today!\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv data-widget_type=\"heading.default\" data-element_type=\"widget\" data-id=\"47416a1\" class=\"elementor-element elementor-element-47416a1 elementor-widget elementor-widget-heading\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003ch5 class=\"elementor-heading-title elementor-size-default\"\u003eFeatures\u003c\/h5\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv data-widget_type=\"pp-icon-list.default\" data-element_type=\"widget\" data-id=\"f5065db\" class=\"elementor-element elementor-element-f5065db pp-icon-list-traditional elementor-list-item-link-inline pp-icon-left elementor-widget elementor-widget-pp-icon-list\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003cdiv class=\"pp-list-container\"\u003e\n\u003cul class=\"pp-list-items\"\u003e\n\u003cli class=\"pp-icon-list-item elementor-repeater-item-31471a9\"\u003e\n\u003cspan class=\"pp-icon-wrapper\"\u003e\u003cspan class=\"pp-icon-list-icon pp-icon\"\u003e\u003ci class=\"fas fa-check\" aria-hidden=\"true\"\u003e\u003c\/i\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"pp-icon-list-text\"\u003e3 MPPT Inputs\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"pp-icon-list-item elementor-repeater-item-a7aa142\"\u003e\n\u003cspan class=\"pp-icon-wrapper\"\u003e\u003cspan class=\"pp-icon-list-icon pp-icon\"\u003e\u003ci class=\"fas fa-check\" aria-hidden=\"true\"\u003e\u003c\/i\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"pp-icon-list-text\"\u003eRemote Monitoring\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"pp-icon-list-item elementor-repeater-item-f9d4049\"\u003e\n\u003cspan class=\"pp-icon-wrapper\"\u003e\u003cspan class=\"pp-icon-list-icon pp-icon\"\u003e\u003ci class=\"fas fa-check\" aria-hidden=\"true\"\u003e\u003c\/i\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"pp-icon-list-text\"\u003eSmart Load Control\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"pp-icon-list-item elementor-repeater-item-ae43604\"\u003e\n\u003cspan class=\"pp-icon-wrapper\"\u003e\u003cspan class=\"pp-icon-list-icon pp-icon\"\u003e\u003ci class=\"fas fa-check\" aria-hidden=\"true\"\u003e\u003c\/i\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"pp-icon-list-text\"\u003eAC Coupling Function\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"pp-icon-list-item elementor-repeater-item-d9ead2f\"\u003e\n\u003cspan class=\"pp-icon-wrapper\"\u003e\u003cspan class=\"pp-icon-list-icon pp-icon\"\u003e\u003ci class=\"fas fa-check\" aria-hidden=\"true\"\u003e\u003c\/i\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"pp-icon-list-text\"\u003eIntegrated UPS Module\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"pp-icon-list-item elementor-repeater-item-bae61c8\"\u003e\n\u003cspan class=\"pp-icon-wrapper\"\u003e\u003cspan class=\"pp-icon-list-icon pp-icon\"\u003e\u003ci class=\"fas fa-check\" aria-hidden=\"true\"\u003e\u003c\/i\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"pp-icon-list-text\"\u003eBuilt-In Circuit Breakers\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"pp-icon-list-item elementor-repeater-item-890429c\"\u003e\n\u003cspan class=\"pp-icon-wrapper\"\u003e\u003cspan class=\"pp-icon-list-icon pp-icon\"\u003e\u003ci class=\"fas fa-check\" aria-hidden=\"true\"\u003e\u003c\/i\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"pp-icon-list-text\"\u003eSeamless Switching In Under 20ms\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"pp-icon-list-item elementor-repeater-item-4058420\"\u003e\n\u003cspan class=\"pp-icon-wrapper\"\u003e\u003cspan class=\"pp-icon-list-icon pp-icon\"\u003e\u003ci class=\"fas fa-check\" aria-hidden=\"true\"\u003e\u003c\/i\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"pp-icon-list-text\"\u003eHigh-Frequency Split-Phase Output\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"pp-icon-list-item elementor-repeater-item-a3518f4\"\u003e\n\u003cspan class=\"pp-icon-wrapper\"\u003e\u003cspan class=\"pp-icon-list-icon pp-icon\"\u003e\u003ci class=\"fas fa-check\" aria-hidden=\"true\"\u003e\u003c\/i\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"pp-icon-list-text\"\u003eAdvanced Parallelability up to 192kW\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"pp-icon-list-item elementor-repeater-item-29c78f3\"\u003e\n\u003cspan class=\"pp-icon-wrapper\"\u003e\u003cspan class=\"pp-icon-list-icon pp-icon\"\u003e\u003ci class=\"fas fa-check\" aria-hidden=\"true\"\u003e\u003c\/i\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"pp-icon-list-text\"\u003eSeamless Integration With GridBOSS MID\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv data-widget_type=\"heading.default\" data-element_type=\"widget\" data-id=\"ea9b5cb\" class=\"elementor-element elementor-element-ea9b5cb elementor-widget elementor-widget-heading\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv data-widget_type=\"pp-icon-list.default\" data-element_type=\"widget\" data-id=\"97dccd1\" class=\"elementor-element elementor-element-97dccd1 pp-icon-list-traditional elementor-list-item-link-inline pp-icon-left elementor-widget elementor-widget-pp-icon-list\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003cdiv class=\"pp-list-container\"\u003e\n\u003cul class=\"pp-list-items\"\u003e\n\u003cli class=\"pp-icon-list-item elementor-repeater-item-37c3e65\"\u003e\n\u003cspan class=\"pp-icon-wrapper\"\u003e\u003cspan class=\"pp-icon-list-icon pp-icon\"\u003e\u003ci class=\"fas fa-check\" aria-hidden=\"true\"\u003e\u003c\/i\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"pp-icon-list-text\"\u003e48V Battery Systems\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"pp-icon-list-item elementor-repeater-item-b01262e\"\u003e\n\u003cspan class=\"pp-icon-wrapper\"\u003e\u003cspan class=\"pp-icon-list-icon pp-icon\"\u003e\u003ci class=\"fas fa-check\" aria-hidden=\"true\"\u003e\u003c\/i\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"pp-icon-list-text\"\u003eResidential Solar Systems\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"pp-icon-list-item elementor-repeater-item-3806218\"\u003e\n\u003cspan class=\"pp-icon-wrapper\"\u003e\u003cspan class=\"pp-icon-list-icon pp-icon\"\u003e\u003ci class=\"fas fa-check\" aria-hidden=\"true\"\u003e\u003c\/i\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"pp-icon-list-text\"\u003eAC Coupled UPS Systems\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"pp-icon-list-item elementor-repeater-item-31471a9\"\u003e\n\u003cspan class=\"pp-icon-wrapper\"\u003e\u003cspan class=\"pp-icon-list-icon pp-icon\"\u003e\u003ci class=\"fas fa-check\" aria-hidden=\"true\"\u003e\u003c\/i\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"pp-icon-list-text\"\u003eOff-Grid Backup Systems\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"pp-icon-list-item elementor-repeater-item-d5e0b2d\"\u003e\n\u003cspan class=\"pp-icon-wrapper\"\u003e\u003cspan class=\"pp-icon-list-icon pp-icon\"\u003e\u003ci class=\"fas fa-check\" aria-hidden=\"true\"\u003e\u003c\/i\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"pp-icon-list-text\"\u003eEmergency Power Systems\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli class=\"pp-icon-list-item elementor-repeater-item-58b6e28\"\u003e\n\u003cspan class=\"pp-icon-wrapper\"\u003e\u003cspan class=\"pp-icon-list-icon pp-icon\"\u003e\u003ci class=\"fas fa-check\" aria-hidden=\"true\"\u003e\u003c\/i\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cspan class=\"pp-icon-list-text\"\u003eCommercial ESS\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5 class=\"pp-list-container\"\u003eSpecifications\u003c\/h5\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cstyle type=\"text\/css\"\u003e\n.tg  {border-collapse:collapse;border-spacing:0;}\n.tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px;\n  overflow:hidden;padding:10px 5px;word-break:normal;}\n.tg th{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px;\n  font-weight:normal;overflow:hidden;padding:10px 5px;word-break:normal;}\n.tg .tg-gvcd{background-color:#ffffff;border-color:#000000;color:#000000;text-align:left;vertical-align:top}\n.tg .tg-0lax{text-align:left;vertical-align:top}\n\u003c\/style\u003e\n\u003cdiv data-widget_type=\"pp-icon-list.default\" data-element_type=\"widget\" data-id=\"97dccd1\" class=\"elementor-element elementor-element-97dccd1 pp-icon-list-traditional elementor-list-item-link-inline pp-icon-left elementor-widget elementor-widget-pp-icon-list\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003cdiv class=\"pp-list-container\"\u003e\n\u003ctable class=\"tg\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"tg-gvcd\"\u003eAC Voltage\u003c\/th\u003e\n\u003cth class=\"tg-0lax\"\u003e120V AC \/ 240V AC\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-gvcd\"\u003eAC Frequency\u003c\/td\u003e\n\u003ctd class=\"tg-0lax\"\u003e60 Hz \/ 50 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-gvcd\"\u003eMax Continuous AC Current\u003c\/td\u003e\n\u003ctd class=\"tg-0lax\"\u003e50A @ 240V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-gvcd\"\u003eMax AC Input Power\u003c\/td\u003e\n\u003ctd class=\"tg-0lax\"\u003e12,000 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-gvcd\"\u003eMax AC Bypass\u003c\/td\u003e\n\u003ctd class=\"tg-0lax\"\u003e90A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-gvcd\"\u003eOperating Voltage Range\u003c\/td\u003e\n\u003ctd class=\"tg-0lax\"\u003e180 – 270V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-gvcd\"\u003eOutput Voltage\u003c\/td\u003e\n\u003ctd class=\"tg-0lax\"\u003e120V AC \/ 240V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-gvcd\"\u003eMax Continuous Output Current\u003c\/td\u003e\n\u003ctd class=\"tg-0lax\"\u003e66.7A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-gvcd\"\u003eOutput Frequency\u003c\/td\u003e\n\u003ctd class=\"tg-0lax\"\u003e60 Hz \/ 50 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-gvcd\"\u003eOutput Power (without PV)\u003c\/td\u003e\n\u003ctd class=\"tg-0lax\"\u003e12,000 W @ 240V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-gvcd\"\u003eOutput Power (with PV)\u003c\/td\u003e\n\u003ctd class=\"tg-0lax\"\u003e16,000 W @ 240V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-gvcd\"\u003ePower Factor\u003c\/td\u003e\n\u003ctd class=\"tg-0lax\"\u003e0.99 (Full Load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-gvcd\"\u003eReactive Power Adjustment Range\u003c\/td\u003e\n\u003ctd class=\"tg-0lax\"\u003e-0.8 ~ 0.8 Leading Adjustable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-gvcd\"\u003eTotal Harmonic Distortion (THD)\u003c\/td\u003e\n\u003ctd class=\"tg-0lax\"\u003e\u0026lt;5% (Full Load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-gvcd\"\u003eTransfer Time\u003c\/td\u003e\n\u003ctd class=\"tg-0lax\"\u003e10 – 20 ms (Single) \/ 20 ms (Parallel)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-gvcd\"\u003eMax Continuous Output Current (Secondary)\u003c\/td\u003e\n\u003ctd class=\"tg-0lax\"\u003e50A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-gvcd\"\u003eRated Output Voltage\u003c\/td\u003e\n\u003ctd class=\"tg-0lax\"\u003e120V AC \/ 240V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-gvcd\"\u003eRated Output Power\u003c\/td\u003e\n\u003ctd class=\"tg-0lax\"\u003e12,000 W @ 240V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-gvcd\"\u003eMax Output Power (Peak)\u003c\/td\u003e\n\u003ctd class=\"tg-0lax\"\u003e24,000 W (0.5 sec) \/ 18,000 W (1 sec) \/ 15,000 W (6 min) \/ 13,200 W (12 min)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-gvcd\"\u003eOperating Frequency\u003c\/td\u003e\n\u003ctd class=\"tg-0lax\"\u003e60 Hz \/ 50 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-gvcd\"\u003eTotal Harmonic Distortion Voltage\u003c\/td\u003e\n\u003ctd class=\"tg-0lax\"\u003e\u0026lt;5%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-gvcd\"\u003eNumber of MPPTs\u003c\/td\u003e\n\u003ctd class=\"tg-0lax\"\u003e3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-gvcd\"\u003eInputs per MPPT\u003c\/td\u003e\n\u003ctd class=\"tg-0lax\"\u003e2 (MPPT 1 \u0026amp; 2) \/ 1 (MPPT 3)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-gvcd\"\u003eMax Input Current\u003c\/td\u003e\n\u003ctd class=\"tg-0lax\"\u003e26A (MPPT 1 \u0026amp; 2) \/ 15A (MPPT 3)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-gvcd\"\u003eMax Short Circuit Input Current\u003c\/td\u003e\n\u003ctd class=\"tg-0lax\"\u003e31A (MPPT 1 \u0026amp; 2) \/ 19A (MPPT 3)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-gvcd\"\u003eDC Input Voltage Range\u003c\/td\u003e\n\u003ctd class=\"tg-0lax\"\u003e100 – 600 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-gvcd\"\u003eStart Up Voltage\u003c\/td\u003e\n\u003ctd class=\"tg-0lax\"\u003e100 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-gvcd\"\u003eMPPT Operating Voltage Range\u003c\/td\u003e\n\u003ctd class=\"tg-0lax\"\u003e120 – 440 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-gvcd\"\u003eMPPT Voltage\u003c\/td\u003e\n\u003ctd class=\"tg-0lax\"\u003e360 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-gvcd\"\u003eMax Utilized PV Array Power\u003c\/td\u003e\n\u003ctd class=\"tg-0lax\"\u003e21,000 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-gvcd\"\u003eMax PV Input\u003c\/td\u003e\n\u003ctd class=\"tg-0lax\"\u003e25,000 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-gvcd\"\u003eMax Efficiency\u003c\/td\u003e\n\u003ctd class=\"tg-0lax\"\u003e94 – 97%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-gvcd\"\u003eIdle Consumption\u003c\/td\u003e\n\u003ctd class=\"tg-0lax\"\u003e\u0026lt;80W (Normal) \/ \u0026lt;60W (Standby Mode)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-gvcd\"\u003eNominal Battery Voltage\u003c\/td\u003e\n\u003ctd class=\"tg-0lax\"\u003e48 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-gvcd\"\u003eBattery Voltage Range\u003c\/td\u003e\n\u003ctd class=\"tg-0lax\"\u003e40 – 60 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-gvcd\"\u003eMax Charge \/ Discharge Power\u003c\/td\u003e\n\u003ctd class=\"tg-0lax\"\u003e12,000 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-gvcd\"\u003eRecommended Battery Capacity per Inverter\u003c\/td\u003e\n\u003ctd class=\"tg-0lax\"\u003e\u0026gt;300 Ah\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-gvcd\"\u003eOperating \/ Storage Temperature Range\u003c\/td\u003e\n\u003ctd class=\"tg-0lax\"\u003e-13ºF – 140ºF (-25ºC – 60ºC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-gvcd\"\u003eAltitude\u003c\/td\u003e\n\u003ctd class=\"tg-0lax\"\u003e\u0026lt;6,561 ft (2000 m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-gvcd\"\u003eRelative Humidity\u003c\/td\u003e\n\u003ctd class=\"tg-0lax\"\u003e0 – 100%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-gvcd\"\u003eTypical Noise Emission\u003c\/td\u003e\n\u003ctd class=\"tg-0lax\"\u003e\u0026lt;50 dB @ 3 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-gvcd\"\u003eProtection Rating\u003c\/td\u003e\n\u003ctd class=\"tg-0lax\"\u003eIP65 \/ NEMA 4X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-gvcd\"\u003eCommunications\u003c\/td\u003e\n\u003ctd class=\"tg-0lax\"\u003eRS485 \/ CANBus \/ WiFi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-gvcd\"\u003eMax Parallel Connections\u003c\/td\u003e\n\u003ctd class=\"tg-0lax\"\u003e16\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cdiv data-widget_type=\"heading.default\" data-element_type=\"widget\" data-id=\"3747d23\" class=\"elementor-element elementor-element-3747d23 elementor-widget elementor-widget-heading\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003ch5 class=\"elementor-heading-title elementor-size-default\"\u003eDimensions\u003c\/h5\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cstyle type=\"text\/css\"\u003e\n.tg  {border-collapse:collapse;border-spacing:0;}\n.tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px;\n  overflow:hidden;padding:10px 5px;word-break:normal;}\n.tg th{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px;\n  font-weight:normal;overflow:hidden;padding:10px 5px;word-break:normal;}\n.tg .tg-0lax{text-align:left;vertical-align:top}\n\u003c\/style\u003e\n\u003cdiv data-widget_type=\"pp-icon-list.default\" data-element_type=\"widget\" data-id=\"97dccd1\" class=\"elementor-element elementor-element-97dccd1 pp-icon-list-traditional elementor-list-item-link-inline pp-icon-left elementor-widget elementor-widget-pp-icon-list\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003cdiv class=\"pp-list-container\"\u003e\n\u003cdiv data-widget_type=\"heading.default\" data-element_type=\"widget\" data-id=\"3747d23\" class=\"elementor-element elementor-element-3747d23 elementor-widget elementor-widget-heading\"\u003e\n\u003cdiv class=\"elementor-widget-container\"\u003e\n\u003ctable class=\"tg\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"tg-0lax\"\u003eWeight\u003c\/th\u003e\n\u003cth class=\"tg-0lax\"\u003e88 lbs (40 kg)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-0lax\"\u003eDepth\u003c\/td\u003e\n\u003ctd class=\"tg-0lax\"\u003e11.3 in (287 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-0lax\"\u003eWidth\u003c\/td\u003e\n\u003ctd class=\"tg-0lax\"\u003e22.3 in (567 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-0lax\"\u003eHeight\u003c\/td\u003e\n\u003ctd class=\"tg-0lax\"\u003e30.5 in (775 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch5\u003eWhat our Experts Think\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli data-start=\"96\" data-end=\"203\"\u003e\n\u003cp data-start=\"98\" data-end=\"203\"\u003e\u003cstrong data-start=\"98\" data-end=\"125\"\u003eStrong 12 kW AC Output:\u003c\/strong\u003e Delivers reliable power for larger homes or light-commercial installations.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"204\" data-end=\"333\"\u003e\n\u003cp data-start=\"206\" data-end=\"333\"\u003e\u003cstrong data-start=\"206\" data-end=\"240\"\u003eSupports Up to 21 kW PV Input:\u003c\/strong\u003e Enables maximum solar harvesting — excellent for high-generation photovoltaic (PV) arrays.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"334\" data-end=\"453\"\u003e\n\u003cp data-start=\"336\" data-end=\"453\"\u003e\u003cstrong data-start=\"336\" data-end=\"371\"\u003eHybrid Operation \u0026amp; Flexibility:\u003c\/strong\u003e Seamlessly manages battery storage, solar generation, and grid power as needed.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"454\" data-end=\"580\"\u003e\n\u003cp data-start=\"456\" data-end=\"580\"\u003e\u003cstrong data-start=\"456\" data-end=\"486\"\u003eLiFePO4‑Ready \u0026amp; Efficient:\u003c\/strong\u003e Designed for long-life LiFePO4 battery banks, with efficient charging and discharge cycles.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"581\" data-end=\"712\"\u003e\n\u003cp data-start=\"583\" data-end=\"712\"\u003e\u003cstrong data-start=\"583\" data-end=\"620\"\u003eSmart Energy Management Features:\u003c\/strong\u003e Includes MPPT tracking, load balancing, and real-time monitoring for optimal performance.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"713\" data-end=\"826\"\u003e\n\u003cp data-start=\"715\" data-end=\"826\"\u003e\u003cstrong data-start=\"715\" data-end=\"757\"\u003eRobust Construction \u0026amp; Low Maintenance:\u003c\/strong\u003e Built for durability and continuous operation with minimal upkeep.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003eQ\u0026amp;A\u003c\/h5\u003e\n\u003cp data-start=\"139\" data-end=\"381\"\u003e\u003cstrong data-start=\"139\" data-end=\"210\"\u003eQ: What is the Big Battery EG4 FlexBOSS21 Hybrid Inverter used for?\u003c\/strong\u003e\u003cbr data-start=\"210\" data-end=\"213\"\u003eA: Designed for \u003cstrong data-start=\"229\" data-end=\"280\"\u003ehigh-capacity off-grid and hybrid solar systems\u003c\/strong\u003e, converting DC from batteries and PV panels into reliable AC power for homes or commercial setups.\u003c\/p\u003e\n\u003cp data-start=\"383\" data-end=\"538\"\u003e\u003cstrong data-start=\"383\" data-end=\"417\"\u003eQ: What is the power capacity?\u003c\/strong\u003e\u003cbr data-start=\"417\" data-end=\"420\"\u003eA: Provides \u003cstrong data-start=\"432\" data-end=\"458\"\u003e12kW continuous output\u003c\/strong\u003e with support for up to \u003cstrong data-start=\"482\" data-end=\"499\"\u003e21kW PV input\u003c\/strong\u003e to maximize solar energy harvesting.\u003c\/p\u003e\n\u003cp data-start=\"540\" data-end=\"701\"\u003e\u003cstrong data-start=\"540\" data-end=\"589\"\u003eQ: Is it compatible with Big Battery systems?\u003c\/strong\u003e\u003cbr data-start=\"589\" data-end=\"592\"\u003eA: Yes, fully compatible with \u003cstrong data-start=\"622\" data-end=\"665\"\u003eEG4 and other Big Battery LiFePO4 packs\u003c\/strong\u003e for flexible hybrid applications.\u003c\/p\u003e\n\u003cp data-start=\"703\" data-end=\"830\"\u003e\u003cstrong data-start=\"703\" data-end=\"738\"\u003eQ: Does it support solar input?\u003c\/strong\u003e\u003cbr data-start=\"738\" data-end=\"741\"\u003eA: Yes, it allows \u003cstrong data-start=\"759\" data-end=\"792\"\u003edirect PV charging up to 21kW\u003c\/strong\u003e, optimizing renewable energy usage.\u003c\/p\u003e\n\u003cp data-start=\"832\" data-end=\"978\"\u003e\u003cstrong data-start=\"832\" data-end=\"869\"\u003eQ: What protections are included?\u003c\/strong\u003e\u003cbr data-start=\"869\" data-end=\"872\"\u003eA: Features \u003cstrong data-start=\"884\" data-end=\"956\"\u003eoverload, short-circuit, over\/under-voltage, and thermal protections\u003c\/strong\u003e for safe operation.\u003c\/p\u003e\n\u003cp data-start=\"980\" data-end=\"1124\"\u003e\u003cstrong data-start=\"980\" data-end=\"1013\"\u003eQ: Is installation difficult?\u003c\/strong\u003e\u003cbr data-start=\"1013\" data-end=\"1016\"\u003eA: Suitable for \u003cstrong data-start=\"1032\" data-end=\"1080\"\u003eprofessional or experienced DIY installation\u003c\/strong\u003e, with clear DC and AC wiring connections.\u003c\/p\u003e\n\u003cp data-start=\"1126\" data-end=\"1357\"\u003e\u003cstrong data-start=\"1126\" data-end=\"1175\"\u003eQ: Why choose the FlexBOSS21 Hybrid Inverter?\u003c\/strong\u003e\u003cbr data-start=\"1175\" data-end=\"1178\"\u003eA: Users prefer it for \u003cstrong data-start=\"1201\" data-end=\"1308\"\u003ehigh-capacity performance, flexible hybrid operation, and seamless integration with Big Battery systems\u003c\/strong\u003e, ensuring energy reliability and independence.\u003c\/p\u003e\n\u003ch5\u003eMaintenance Tips\u003c\/h5\u003e\n\u003cul\u003e\n\u003cli data-start=\"187\" data-end=\"291\"\u003e\n\u003cp data-start=\"189\" data-end=\"291\"\u003e\u003cstrong data-start=\"189\" data-end=\"213\"\u003eInspect connections:\u003c\/strong\u003e Check AC\/DC terminals and wiring monthly for tightness, corrosion, or wear.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"292\" data-end=\"372\"\u003e\n\u003cp data-start=\"294\" data-end=\"372\"\u003e\u003cstrong data-start=\"294\" data-end=\"323\"\u003eKeep cooling vents clean:\u003c\/strong\u003e Remove dust and debris to prevent overheating.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"373\" data-end=\"523\"\u003e\n\u003cp data-start=\"375\" data-end=\"523\"\u003e\u003cstrong data-start=\"375\" data-end=\"406\"\u003eMonitor system performance:\u003c\/strong\u003e Use the display or monitoring software to watch for error codes, voltage irregularities, or abnormal temperatures.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"524\" data-end=\"623\"\u003e\n\u003cp data-start=\"526\" data-end=\"623\"\u003e\u003cstrong data-start=\"526\" data-end=\"547\"\u003eFirmware updates:\u003c\/strong\u003e Apply manufacturer-recommended updates to maintain efficiency and safety.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"624\" data-end=\"727\"\u003e\n\u003cp data-start=\"626\" data-end=\"727\"\u003e\u003cstrong data-start=\"626\" data-end=\"646\"\u003eCheck grounding:\u003c\/strong\u003e Ensure proper grounding to avoid electrical hazards and stabilize performance.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"728\" data-end=\"839\"\u003e\n\u003cp data-start=\"730\" data-end=\"839\"\u003e\u003cstrong data-start=\"730\" data-end=\"750\"\u003eAvoid overloads:\u003c\/strong\u003e Do not exceed the 12kW continuous output rating to prevent damage and extend lifespan.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-start=\"840\" data-end=\"963\"\u003e\n\u003cp data-start=\"842\" data-end=\"963\"\u003e\u003cstrong data-start=\"842\" data-end=\"865\"\u003eEnvironmental care:\u003c\/strong\u003e Install in a dry, ventilated area away from direct sunlight, moisture, or corrosive substances.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Big Battery","offers":[{"title":"Default Title","offer_id":45468164554943,"sku":"INV027","price":3103.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0683\/5703\/0079\/files\/EG4_FlexBOSS_21_Front.png?v=1775548130","url":"https:\/\/se0yig-03.myshopify.com\/products\/big-battery-eg4-flexboss21-12kw-21kpv-hybrid-inverter","provider":"Your Outdoor Setup Starts Here","version":"1.0","type":"link"}