{"product_id":"eg4-wallmount-314ah-all-weather-battery-flexboss21","title":"EG4 WallMount 314Ah All-Weather Battery + FLEXBOSS21","description":"\u003cp class=\"bb-justify-between\"\u003e\u003cspan\u003eItems Included\u003c\/span\u003e\u003cspan\u003eSKU\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv class=\"bb-items-included-frontend\"\u003e\n\u003cdiv class=\"bb-item-frontend\"\u003e\n\u003cimg class=\"bb-item-img\" alt=\"EG4 All Weather Conduit Box\" src=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/01\/Rhino-2-Conduit-Box-CNT079-1-150x150.png\"\u003e\n\u003cdiv class=\"bb-item-info\"\u003e\n\u003cspan class=\"bb-item-qty\"\u003e1x\u003c\/span\u003e\u003cspan class=\"bb-item-title\"\u003eEG4 All Weather Conduit Box\u003c\/span\u003e\u003cspan class=\"bb-item-sku\"\u003eCNT102\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bb-item-frontend\"\u003e\n\u003cimg class=\"bb-item-img\" alt=\"EG4 FlexBOSS21 Hybrid Solar Inverter | 21kW PV \/ 16kW AC | Split-Phase | 4-MPPT | Scalable | Remote Wi-Fi Monitoring\" src=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/11\/EG4_FlexBOSS_21_Front-150x150.png\"\u003e\n\u003cdiv class=\"bb-item-info\"\u003e\n\u003cspan class=\"bb-item-qty\"\u003e1x\u003c\/span\u003e\u003cspan class=\"bb-item-title\"\u003eEG4 FlexBOSS21 Hybrid Solar Inverter | 21kW PV \/ 16kW AC | Split-Phase | 4-MPPT | Scalable | Remote Wi-Fi Monitoring\u003c\/span\u003e\u003cspan class=\"bb-item-sku\"\u003eINV027\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bb-item-frontend\"\u003e\n\u003cimg class=\"bb-item-img\" alt=\"51.2V WallMount 314Ah All-Weather Battery\" src=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2026\/01\/2-150x150.png\"\u003e\n\u003cdiv class=\"bb-item-info\"\u003e\n\u003cspan class=\"bb-item-qty\"\u003e1x\u003c\/span\u003e\u003cspan class=\"bb-item-title\"\u003e51.2V WallMount 314Ah All-Weather Battery \u003c\/span\u003e\u003cspan class=\"bb-item-sku\"\u003eFEWAW-48161-G1\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bb-item-info\"\u003e\n\u003cspan class=\"bb-item-sku\"\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bb-item-info\"\u003e\n\u003cp\u003eMeet the \u003cstrong\u003eEG4 WallMount 314Ah AllWeather Battery\u003c\/strong\u003e — a high-capacity, outdoor-ready energy storage unit built for installs where space, weather, and long runtimes all matter. Delivering \u003cstrong\u003e16kWh at 51.2V\u003c\/strong\u003e, it’s designed to be a dependable backbone for solar-plus-storage, off-grid power, or whole-home backup setups that need serious capacity with straightforward expandability.\u003c\/p\u003e\n\u003cp\u003eAt the core are \u003cstrong\u003elithium iron phosphate (LiFePO₄) cells\u003c\/strong\u003e paired with \u003cstrong\u003eEG4’s smart BMS\u003c\/strong\u003e for stable performance and long service life, plus \u003cstrong\u003eactive cell balancing\u003c\/strong\u003e to help keep the pack operating efficiently over time. The enclosure is purpose-built for exterior placements with an \u003cstrong\u003eIP67 rating\u003c\/strong\u003e, and \u003cstrong\u003einternal heaters\u003c\/strong\u003e support reliable operation when temperatures drop. For day-to-day ownership and long-term maintenance, \u003cstrong\u003eBluetooth + Wi-Fi connectivity\u003c\/strong\u003e enables live status checks and \u003cstrong\u003eover-the-air firmware updates\u003c\/strong\u003e through the EG4 app—so the system stays current without hassle.\u003c\/p\u003e\n\u003ch3 id=\"h-why-it-stands-out\" class=\"wp-block-heading\"\u003eWhy it stands out\u003c\/h3\u003e\n\u003cul class=\"wp-block-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eBig usable capacity:\u003c\/strong\u003e \u003cstrong\u003e16kWh (314Ah)\u003c\/strong\u003e for extended runtime and stronger backup coverage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTrue outdoor protection:\u003c\/strong\u003e \u003cstrong\u003eIP67 enclosure\u003c\/strong\u003e built to handle dust, water, and harsh conditions\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmarter control:\u003c\/strong\u003e EG4 \u003cstrong\u003esmart BMS\u003c\/strong\u003e with \u003cstrong\u003eactive cell balancing\u003c\/strong\u003e for better efficiency and longevity\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnected ownership:\u003c\/strong\u003e \u003cstrong\u003eBluetooth\/Wi-Fi monitoring\u003c\/strong\u003e + \u003cstrong\u003eOTA updates\u003c\/strong\u003e via the EG4 app\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCold-weather confidence:\u003c\/strong\u003e \u003cstrong\u003eBuilt-in heaters\u003c\/strong\u003e for reliable performance in colder climates\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimplified scaling:\u003c\/strong\u003e \u003cstrong\u003eAuto-addressing\u003c\/strong\u003e and closed-loop integration with EG4 inverters\/batteries\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 id=\"h-best-fit-applications\" class=\"wp-block-heading\"\u003eBest-fit applications\u003c\/h3\u003e\n\u003cp\u003eA strong choice for \u003cstrong\u003eresidential and light commercial\u003c\/strong\u003e solar storage, \u003cstrong\u003eoutdoor battery banks\u003c\/strong\u003e, \u003cstrong\u003eoff-grid power systems\u003c\/strong\u003e, and \u003cstrong\u003ebackup power\u003c\/strong\u003e where durability, monitoring, and easy expansion are priorities.\u003c\/p\u003e\n\u003ch3 id=\"h-core-specifications-at-a-glance\" class=\"wp-block-heading\"\u003eCore specifications (at a glance)\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eWeight:\u003c\/strong\u003e 309 lbs\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNominal Voltage:\u003c\/strong\u003e 51.2V\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eEnergy Capacity:\u003c\/strong\u003e 16kWh\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCharge Capacity:\u003c\/strong\u003e 314Ah\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMax Parallel (closed-loop):\u003c\/strong\u003e Up to 32 batteries\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCertifications:\u003c\/strong\u003e UL 1973; UL 9540 with Flexboss21 \u0026amp; Flexboss18\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDesign Life:\u003c\/strong\u003e Tested \u003cstrong\u003e10,000+ cycles @ 80% DoD\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e 34.6″ × 21.7″ × 9.3″\u003c\/p\u003e\n\u003cp\u003ehttps:\/\/youtu.be\/piXdWAx8aus%3Ehttps:\/\/youtu.be\/piXdWAx8aus\u003cmeta charset=\"UTF-8\"\u003e\u003c\/p\u003e\n\u003cdiv class=\"column active\" data-column=\"battery\"\u003e\n\u003cdiv class=\"download-table\"\u003e\n\u003cdiv class=\"table-header\"\u003e\n\u003ch2\u003eBattery Downloads\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-body\"\u003e\n\u003cdiv class=\"table-row\"\u003e\u003cspan class=\"row-key\"\u003eSKU#:K0280, K0281, K0282, K0283, K0284, K0284, K0285\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eSpec Sheet:\u003c\/span\u003e\u003ca class=\"download-btn\" href=\"https:\/\/eg4electronics.com\/wp-content\/uploads\/2025\/04\/EG4-Outdoor-314Ah-WallMount-Battery-Spec-Sheet.pdf\" rel=\"noopener\" target=\"_blank\"\u003e\u003cimg decoding=\"async\" src=\"https:\/\/bigbattery.com\/wp-content\/themes\/shoptimizer-child\/template-parts\/product\/assets\/images\/download.png\" alt=\"Download\"\u003eDOWNLOAD\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eUser Manual:\u003c\/span\u003e\u003ca class=\"download-btn\" href=\"https:\/\/eg4electronics.com\/wp-content\/uploads\/2025\/04\/EG4-Outdoor-314Ah-WallMount-Battery-User-Manual.pdf\" rel=\"noopener\" target=\"_blank\"\u003e\u003cimg decoding=\"async\" src=\"https:\/\/bigbattery.com\/wp-content\/themes\/shoptimizer-child\/template-parts\/product\/assets\/images\/download.png\" alt=\"Download\"\u003eDOWNLOAD\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eQuick Start Guide:\u003c\/span\u003e\u003ca class=\"download-btn\" href=\"https:\/\/eg4electronics.com\/wp-content\/uploads\/2025\/04\/EG4-Outdoor-314Ah-WallMount-Battery-Quick-Start-Guide.pdf\" rel=\"noopener\" target=\"_blank\"\u003e\u003cimg decoding=\"async\" src=\"https:\/\/bigbattery.com\/wp-content\/themes\/shoptimizer-child\/template-parts\/product\/assets\/images\/download.png\" alt=\"Download\"\u003eDOWNLOAD\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eUL9540 Certificate:\u003c\/span\u003e\u003ca class=\"download-btn\" href=\"https:\/\/eg4electronics.com\/wp-content\/uploads\/2026\/01\/EG4-WallMount-314Ah-All-Weather-Battery-UL-9540-COC.pdf\" rel=\"noopener\" target=\"_blank\"\u003e\u003cimg decoding=\"async\" src=\"https:\/\/bigbattery.com\/wp-content\/themes\/shoptimizer-child\/template-parts\/product\/assets\/images\/download.png\" alt=\"Download\"\u003eDOWNLOAD\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eUL9540A Certificate:\u003c\/span\u003e\u003ca class=\"download-btn\" href=\"https:\/\/eg4electronics.com\/wp-content\/uploads\/2026\/01\/EG4-WallMount-314Ah-All-Weather-Battery-UL-9540A-VOC.pdf\" rel=\"noopener\" target=\"_blank\"\u003e\u003cimg decoding=\"async\" src=\"https:\/\/bigbattery.com\/wp-content\/themes\/shoptimizer-child\/template-parts\/product\/assets\/images\/download.png\" alt=\"Download\"\u003eDOWNLOAD\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eUL1973 Certificate:\u003c\/span\u003ePENDING\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eUN38.3 Certificate:\u003c\/span\u003ePENDING\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"download-table\"\u003e\n\u003cdiv class=\"table-header\"\u003e\n\u003ch2\u003eBattery Specifications\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-body\"\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cdiv class=\"bb-downloads-specs single-table\"\u003e\n\u003cdiv class=\"downloads-container\"\u003e\n\u003cdiv class=\"column active\" data-column=\"battery\"\u003e\n\u003cdiv class=\"download-table\"\u003e\n\u003cdiv class=\"table-body table-single\"\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eProduct Type:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eLFP Battery\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eBattery Type:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eLithium Iron Phosphate (LFP)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eModel Number:WM48314AW\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eXX (XX is a number between 00 – 99)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eNominal Energy Capacity:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e16kWh\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eUsable Energy (DOD%):\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e12.86kWh (80% recommended)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eVoltage Range:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e47.5 – 57.6 VDC\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eNominal Voltage:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e51.2 VDC\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eCapacity:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e314Ah\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eCharging Voltage Range:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e56 – 57 VDC\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eDischarging Cut-off Voltage:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e47.5 VDC\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eMax Continuous Charge Current:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e157A\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eMax Continuous Discharge Current:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e200A\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eContinuous Charge\/Discharge Power:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e8\/10.2 kW\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eRecommended Charging\/Discharging Rate:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e0.5C\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003ePeak Power:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e12.8kW (3 sec)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eRound-trip Efficiency:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e95%\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\u003cspan class=\"row-key\"\u003eMax Parallel Units:32\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eProtection Features:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eOver\/Under Voltage, Over-Current, Short Circuit, High\/Low Temp\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eBattery Management System (BMS):\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eIntegrated, Active Balancing\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eCommunication Protocols:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eRS485, CAN\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eBattery Breaker:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e250A\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eStorage Temperature Range**:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e-4 – 131°F (-20 – 55°C)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eHumidity Range:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e5% – 95% RH (non-condensing)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eAltitude:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e9843 ft. (\u0026lt;3000 m)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eCooling Method:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eNatural Convection\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eDimensions (H × W × D):\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e34.6 in. × 21.7 in. × 9.3 in. (880 mm × 550 mm × 235 mm)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eOperating Temperature Range:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eCharge: 32 – 122°F (0 – 50°C); Discharging: -4 – 131°F (-20 – 55°C)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eRecommended DOD Setting Note*:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eEG4 recommends this value be set no lower than 20% to maintain the recommended 80% Depth of Discharge.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eStorage Temperature Note**:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eLess than 3 months of storage. If longer than 3 months, recommended storage temperature will be 59°F – 86°F (15°C – 30°C).\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eWeight:309 \u003c\/span\u003e\u003cspan class=\"row-value\"\u003elbs. (140 kg)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eEnclosure Rating:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eIP67\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eMounting Options:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eWall attatched\/Floor mount\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eDisplay\/Indicators:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eLED Status\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eConnector Type:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eDegson quick connector\/screw terminal\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eUL 1973:P\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eending\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eUL 9540:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003ePending\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eUL 9540A:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003ePending\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\u003cspan class=\"row-key\"\u003eUN 38.3:Pending\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eCycle Life (70% EOL Capacity):\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e10000 cycles @ 0.5C, 25°C, 80% DOD\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eDesign Life*:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e15 years\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eWarranty:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e10 years or 10000 cycles\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eApplication Type:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eResidential\/Commercial\/Off-grid\/Backup\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eLifetime Energy Throughput:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e122.2MWh\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eNote:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eInformation subject to change without notice.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"column\" data-column=\"inverter\"\u003e\n\u003cdiv class=\"download-table\"\u003e\n\u003cdiv class=\"table-header\"\u003e\n\u003ch2\u003eInverter Downloads\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-body\"\u003e\n\u003cdiv class=\"table-row\"\u003e\u003cspan class=\"row-key\"\u003eSKU#:K0280, K0281, K0282, K0283, K0284, K0284, K0285\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eSpec Sheet:\u003c\/span\u003e\u003ca class=\"download-btn\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2025\/01\/EG4-FlexBoss21-Spec-Sheet.pdf\" rel=\"noopener\" target=\"_blank\"\u003e\u003cimg decoding=\"async\" src=\"https:\/\/bigbattery.com\/wp-content\/themes\/shoptimizer-child\/template-parts\/product\/assets\/images\/download.png\" alt=\"Download\"\u003eDOWNLOAD\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eUser Manual:\u003c\/span\u003e\u003ca class=\"download-btn\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2025\/01\/FlexBOSS-21-Manual.pdf\" rel=\"noopener\" target=\"_blank\"\u003e\u003cimg decoding=\"async\" src=\"https:\/\/bigbattery.com\/wp-content\/themes\/shoptimizer-child\/template-parts\/product\/assets\/images\/download.png\" alt=\"Download\"\u003eDOWNLOAD\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eUL1741 Certificate:\u003c\/span\u003e\u003ca class=\"download-btn\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/11\/EG4-FlexBoss21-COC.pdf\" rel=\"noopener\" target=\"_blank\"\u003e\u003cimg decoding=\"async\" src=\"https:\/\/bigbattery.com\/wp-content\/themes\/shoptimizer-child\/template-parts\/product\/assets\/images\/download.png\" alt=\"Download\"\u003eDOWNLOAD\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eCEC Listing – BigBattery ETHOS + EG4 FlexBOSS21:\u003c\/span\u003e\u003ca class=\"download-btn\" href=\"https:\/\/solarequipment.energy.ca.gov\/Home\/EnergyStorage?ManufacturerID=EG4+Electronics+LLC\u0026amp;amp;ModelNameID=-1\u0026amp;amp;Submit=Search\u0026amp;amp;Rows=25\" rel=\"noopener\" target=\"_blank\"\u003e\u003cimg decoding=\"async\" src=\"https:\/\/bigbattery.com\/wp-content\/themes\/shoptimizer-child\/template-parts\/product\/assets\/images\/gotolink.png\" alt=\"Go to link\"\u003eGO TO LINK\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"download-table\"\u003e\n\u003cdiv class=\"table-header\"\u003e\n\u003ch2\u003eInverter Specifications\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-body\"\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eNominal AC Voltage:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e120\/240VAC | 120\/208VAC (L1\/L2\/N required)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eFrequency:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e60 Hz (Default) | 50 Hz\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eMax. AC Current:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e50A @ 240V | 57.7A @ 208V\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eMax. AC Input Power:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e12000W\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eMax. AC Bypass:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e90A\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eOperating Voltage Range:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e180 – 270VAC\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eOutput Voltage:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e120\/240VAC | 120\/208VAC (L1\/L2\/N required)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eMax. Output Current:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e66.7A\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eOutput Frequency:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e60 Hz (Default) | 50 Hz\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eNominal Output Power (without PV):\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e12000W @ 240V | 12000W @ 208V\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eNominal Output Power (with PV):\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e16000W @ 240V | 13800kW @ 208V\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003ePower Factor:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e0.99 (Full Load)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eReactive Power Adjustment Range:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e-0.8 – 0.8 Leading Adjustable\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eTotal Harmonic Distortion:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e\u0026lt;5% (Full Load)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eTransfer Time:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e20ms (Default) | 10ms (Configurable) | 20ms (Parallel)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eRated Output Current:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e50A @ 240V | 57.7A @ 208V\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eNominal Output Voltage:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e120\/240VAC | 120\/208VAC\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eRated Output Power:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e12000W @ 240VAC | 12000W @ 208VAC\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003ePeak Power:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e24000W (0.5 sec) | 18000W (1 sec)\u003cbr\u003e15000W (6 min) | 13200W (12 min)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eOperating Frequency:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e60 Hz (Default) | 50 Hz\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eTotal Harmonic Distortion Voltage:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e\u0026lt;5%\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eTransfer Time:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e20ms (Default) | 10ms (Configurable) | 20ms (Parallel)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eNo. of MPPTs:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e3\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eInputs per MPPT:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e2 (MPPT 1) | 2 (MPPT 2) | 1 (MPPT 3)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eMax. Usable Input Current:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e26A (MPPT 1) | 26A (MPPT 2) | 15A (MPPT 3)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eMax. Short Circuit Input Current:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e31A (MPPT 1) | 31A (MPPT 2) | 19A (MPPT 3)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eDC Input Voltage Range:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e100 – 600VDC\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eUnit Start-Up Voltage:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e100VDC\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eMPPT Operating Voltage Range:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e120 – 440VDC\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eNominal MPPT Voltage:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e360VDC\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eMax. Utilized PV Array Power:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e21000W\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eMax. Recommended PV Input:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e25000W\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eMax. Efficiency:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e97% (PV to Grid) | 94.5% (PV to Battery) | 94% (Battery to Grid)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eIdle Consumption:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e\u0026lt;65W\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eNominal Voltage:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e48VDC\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eVoltage Range:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e40 – 60VDC\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eMax. Charge \/ Discharge Power:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e12000W\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eRecommended Battery Capacity per Inverter:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e\u0026gt;300Ah\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eOperating \/ Storage Temperature Range:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e-13ºF – 140ºF (-25ºC – 60ºC)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eOperating Altitude:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e\u0026lt;6,561 ft (2000 m)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eRelative Humidity:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e0 – 100%\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eTypical Noise Emission:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e\u0026lt;50dB @ 3 ft\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eDesign Topology:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eHigh-Frequency \/ Transformerless\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eProtection Rating:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eIP65 \/ NEMA 4X\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eCommunications:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eRS485 \/ CANBus \/ WiFi\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eMax. Parallel Connections:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e16\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eWeight:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e88 lbs (40 kg)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eDepth:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e11.3 in (287 mm)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eWidth:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e22.3 in (567 mm)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\u003cspan class=\"row-key\"\u003eHeight:\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\u003cspan class=\"row-key\"\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\u003cspan class=\"row-key\"\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Big Battery","offers":[{"title":"Default Title","offer_id":45171959103542,"sku":"K0280","price":7960.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/1275\/7558\/files\/314Ah-All-Weather-Flexboss21-1-scaled.png?v=1774626982","url":"https:\/\/stellarstarsolarsolutions.com\/products\/eg4-wallmount-314ah-all-weather-battery-flexboss21","provider":"Stellar Star Solar Solutions","version":"1.0","type":"link"}