{"product_id":"bigbattery-eg4-flexboss21-hybrid-inverter-powerpro-14-3kwh-all-weather-battery-ess","title":"BigBattery EG4 FlexBOSS21 Hybrid Inverter + PowerPro 14.3kWh All Weather Battery ESS","description":"\u003cp data-start=\"316\" data-end=\"964\"\u003eThe \u003cstrong data-start=\"320\" data-end=\"390\"\u003eEG4 PowerPro Energy Storage System with FlexBOSS21 Hybrid Inverter\u003c\/strong\u003e is a high-capacity residential solar storage solution designed for grid-tied, hybrid, or off-grid installations. This configuration includes \u003cstrong data-start=\"532\" data-end=\"617\"\u003e1× EG4 FlexBOSS21 hybrid inverter and 1× EG4 PowerPro All Weather LiFePO4 battery\u003c\/strong\u003e, delivering \u003cstrong data-start=\"630\" data-end=\"661\"\u003e14.3 kWh of lithium storage\u003c\/strong\u003e and powerful solar integration for modern home energy systems. The FlexBOSS21 inverter supports \u003cstrong data-start=\"758\" data-end=\"788\"\u003eup to 21 kW solar PV input\u003c\/strong\u003e and provides \u003cstrong data-start=\"802\" data-end=\"850\"\u003eup to 16 kW AC output when paired with solar\u003c\/strong\u003e, making it ideal for large residential loads and whole-home backup power. \u003cspan class=\"\" data-state=\"closed\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp data-start=\"966\" data-end=\"1555\"\u003eThe included \u003cstrong data-start=\"979\" data-end=\"1006\"\u003eEG4 All Weather battery\u003c\/strong\u003e features \u003cstrong data-start=\"1016\" data-end=\"1096\"\u003e280 Ah capacity, advanced BMS protection, and IP65 weather-resistant housing\u003c\/strong\u003e, enabling reliable indoor or outdoor installation. With \u003cstrong data-start=\"1153\" data-end=\"1200\"\u003e8,000+ cycle life at 80% depth of discharge\u003c\/strong\u003e, CANBus\/RS485 communication, and scalable expansion capabilities, this ESS provides dependable long-term energy storage. The FlexBOSS21 inverter also integrates \u003cstrong data-start=\"1362\" data-end=\"1437\"\u003ethree MPPT trackers, 10–20 ms UPS transfer time, and smart load control\u003c\/strong\u003e, ensuring efficient solar production and uninterrupted backup during outages.\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-end=\"3304\" data-start=\"3256\" data-section-id=\"1qwhyde\"\u003e1 × 48V EG4 All Weather – FEWPP-48143-G1\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"3304\" data-start=\"3256\" data-section-id=\"1qwhyde\"\u003e1 × EG4 All Weather Conduit Box – CNT102\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"3304\" data-start=\"3256\" data-section-id=\"1qwhyde\"\u003e1 × EG4 FlexBOSS21 16kW (21kPV) Hybrid Inverter – INV027\u003cbr\u003e\n\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 PowerPro FlexBOSS21 ESS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eK0100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConfiguration\u003c\/td\u003e\n\u003ctd\u003e1× FlexBOSS21 + 1× All Weather Battery\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Battery Capacity\u003c\/td\u003e\n\u003ctd\u003e14.3 kWh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery Chemistry\u003c\/td\u003e\n\u003ctd\u003eLithium Iron Phosphate (LiFePO4)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery Voltage\u003c\/td\u003e\n\u003ctd\u003e51.2 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery Capacity\u003c\/td\u003e\n\u003ctd\u003e280 Ah\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Continuous Charge Current\u003c\/td\u003e\n\u003ctd\u003e140 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Continuous Discharge Current\u003c\/td\u003e\n\u003ctd\u003e140 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Battery Output\u003c\/td\u003e\n\u003ctd\u003e10,240 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInverter Model\u003c\/td\u003e\n\u003ctd\u003eEG4 FlexBOSS21\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Output Power\u003c\/td\u003e\n\u003ctd\u003e12,000 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Output with PV\u003c\/td\u003e\n\u003ctd\u003e16,000 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Solar PV Input\u003c\/td\u003e\n\u003ctd\u003e21,000 W\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 Voltage Range\u003c\/td\u003e\n\u003ctd\u003e100–600 V DC\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\u003eMax AC Output Current\u003c\/td\u003e\n\u003ctd\u003e66.7 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\u003eInverter Efficiency\u003c\/td\u003e\n\u003ctd\u003eUp to 97%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunications\u003c\/td\u003e\n\u003ctd\u003eCANBus, RS485, Wi-Fi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery Protection 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-20 °C to 55 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eUL9540A, UL1973\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e10 Years (Battery \u0026amp; Inverter)\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\u003cp\u003e\u003cstrong\u003eBattery \u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0814\/0822\/9588\/files\/EG4-WallMount-314Ah-Indoor-Battery-Spec-Sheet.pdf?v=1773403577\" 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\/EG4-WallMount-Indoor-314Ah-Battery-User-Manual.pdf?v=1773403589\" target=\"_blank\"\u003e\u003cspan\u003eUser Manual\u003c\/span\u003e\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0814\/0822\/9588\/files\/EG4-WallMount-314Ah-Indoor-Battery-Quick-Start-Guide.pdf?v=1773403588\" target=\"_blank\"\u003eQuick Start Guide\u003c\/a\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eInverter\u003c\/strong\u003e\u003c\/p\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":47653039046868,"sku":"K0100","price":7235.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0814\/0822\/9588\/files\/Main-1.png?v=1773581638","url":"https:\/\/sitereadysupply.com\/products\/bigbattery-eg4-flexboss21-hybrid-inverter-powerpro-14-3kwh-all-weather-battery-ess","provider":"Site Ready Supply","version":"1.0","type":"link"}