{"product_id":"bigbattery-nexus-apex-6-5k-off-grid-system","title":"BigBattery 48V 15kWH NEXUS + APEX-6.5K Off-Grid System","description":"\u003ch2 style=\"text-align: center;\"\u003e\u003cspan style=\"color: rgb(50, 149, 66);\"\u003e\u003cstrong\u003eBigBattery 48V 15kWH NEXUS + APEX-6.5K Off-Grid System\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3 class=\"content__summary-title\"\u003e\u003cstrong\u003eProduct Summary:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cdiv class=\"woocommerce-product-details__short-description\"\u003e\n\u003cp data-end=\"561\" data-start=\"209\"\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong data-end=\"262\" data-start=\"213\"\u003eBigBattery APEX 6.5K + NEXUS™ Off-Grid System\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis a complete, high-performance energy solution designed for\u003cspan\u003e \u003c\/span\u003e\u003cstrong data-end=\"375\" data-start=\"324\"\u003ereliable off-grid power and energy independence\u003c\/strong\u003e. Combining the\u003cspan\u003e \u003c\/span\u003e\u003cstrong data-end=\"420\" data-start=\"391\"\u003eAPEX 6.5K hybrid inverter\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ewith the\u003cspan\u003e \u003c\/span\u003e\u003cstrong data-end=\"465\" data-start=\"430\"\u003eNEXUS 48V 15kWh LiFePO₄ battery\u003c\/strong\u003e, this system delivers dependable, efficient energy for homes, cabins, and remote installations.\u003c\/p\u003e\n\u003cdiv id=\"bb-see-more-1\" class=\"bb-see-more\"\u003e\n\u003cdiv class=\"bb-see-more-content\"\u003e\n\u003cp data-end=\"943\" data-start=\"563\"\u003eThe APEX 6.5K provides\u003cspan\u003e \u003c\/span\u003e\u003cstrong data-end=\"632\" data-start=\"586\"\u003esplit-phase 120\/240V pure sine-wave output\u003c\/strong\u003e, supporting both everyday appliances and heavy loads, while seamlessly integrating\u003cspan\u003e \u003c\/span\u003e\u003cstrong data-end=\"746\" data-start=\"716\"\u003esolar and generator inputs\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efor continuous operation. Paired with the scalable NEXUS battery system (expandable up to\u003cspan\u003e \u003c\/span\u003e\u003cstrong data-end=\"847\" data-start=\"837\"\u003e225kWh\u003c\/strong\u003e), this setup ensures long-lasting, maintenance-free energy storage with consistent performance.\u003c\/p\u003e\n\u003cp data-end=\"1148\" data-start=\"945\"\u003eBuilt with advanced battery protection, safe lithium technology, and\u003cspan\u003e \u003c\/span\u003e\u003cstrong data-end=\"1044\" data-start=\"1014\"\u003eU.S.-supported engineering\u003c\/strong\u003e, this system is ideal for off-grid living, backup power, and energy security in demanding environments.\u003c\/p\u003e\n\u003cp data-end=\"1308\" data-start=\"1150\"\u003e\u003cstrong data-end=\"1187\" data-start=\"1172\"\u003eShips From:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eTexas, USA\u003cbr data-end=\"1206\" data-start=\"1203\"\u003e\u003cstrong data-end=\"1219\" data-start=\"1206\"\u003eWarranty:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e12 Years (Battery), 5 Years (Inverter)\u003cbr data-end=\"1262\" data-start=\"1259\"\u003e\u003cstrong data-end=\"1274\" data-start=\"1262\"\u003eSupport:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eLifetime USA-Based Tech Support.\u003c\/p\u003e\n\u003ch2 class=\"wp-block-heading has-text-align-left\" id=\"h-introducing-the-apex-inverter-series\"\u003eIntroducing The APEX Inverter Series\u003c\/h2\u003e\n\u003cdiv class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-11ebca16 wp-block-columns-is-layout-flex\"\u003e\n\u003cdiv class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"\u003e\n\u003cp\u003eMeet the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eBigBattery\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAPEX Off-Grid Hybrid Inverter Series (6.5K \u0026amp; 10K)\u003c\/strong\u003e—engineered for true energy independence with two power-class options to match your build. Both models deliver\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003esplit-phase 120\/240V at 50\/60 Hz\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ewith\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eclean, pure sine-wave output\u003c\/strong\u003e, pairing seamlessly with modern\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eLiFePO₄ battery banks\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003efor stable, efficient performance. Designed for real-world autonomy, APEX supports\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003esolar and generator inputs\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eso you can stay powered day and night, season after season.\u003c\/p\u003e\n\u003cp\u003eBuilt to handle demanding loads, the APEX Series features an\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e80A pass-through\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eto keep large appliances and critical circuits running smoothly, while\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ewide operating temperatures\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand an\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eoutdoor-ready enclosure\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eprovide dependable performance in harsh conditions. With\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003einstaller-friendly bottom-entry wiring\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eand intelligent protections baked in, APEX is a rugged, efficient, and practical backbone for cabins, homesteads, remote residences, and off-grid properties—delivering a streamlined path to reliable, all-day power.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"\u003e\n\u003cfigure class=\"wp-block-image size-large\"\u003e\u003cimg decoding=\"async\" src=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2025\/12\/Product-Infographics-2-1024x854.webp\" alt=\"\"\u003e\u003c\/figure\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch5 data-end=\"1335\" data-start=\"1315\" data-section-id=\"18fxkdn\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-end=\"1335\" data-start=\"1318\"\u003eCompatibility\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h5\u003e\n\u003cp data-end=\"1222\" data-start=\"1188\"\u003e\u003cstrong data-end=\"1222\" data-start=\"1188\"\u003eIntegrated \u0026amp; Optimized System (Closed-Loop Communication): \u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"1411\" data-start=\"1360\"\u003e\n\u003cli data-end=\"1411\" data-start=\"1360\" data-section-id=\"pm7lpk\"\u003eAPEX 6.5K Hybrid Inverter + NEXUS 15kWh Battery\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"1435\" data-start=\"1413\"\u003e\u003cstrong data-end=\"1435\" data-start=\"1413\"\u003eExpandable Design:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"1593\" data-start=\"1436\"\u003e\n\u003cli data-end=\"1485\" data-start=\"1436\" data-section-id=\"1epo6m5\"\u003eScale battery storage from 15kWh up to 225kWh\u003c\/li\u003e\n\u003cli data-end=\"1537\" data-start=\"1486\" data-section-id=\"1c0l9ju\"\u003eSupports solar + generator input configurations\u003c\/li\u003e\n\u003cli data-end=\"1593\" data-start=\"1538\" data-section-id=\"9ud82x\"\u003eDesigned for off-grid and backup power applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5 data-end=\"1619\" data-start=\"1600\" data-section-id=\"1j5qwet\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-end=\"1619\" data-start=\"1603\"\u003eKey Features\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h5\u003e\n\u003cul data-end=\"2529\" data-start=\"1621\"\u003e\n\u003cli data-end=\"1720\" data-start=\"1621\" data-section-id=\"1g0lbl6\"\u003e\n\u003cstrong data-end=\"1651\" data-start=\"1623\"\u003eComplete Off-Grid System\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e– Inverter + battery solution designed to work seamlessly together\u003c\/li\u003e\n\u003cli data-end=\"1804\" data-start=\"1721\" data-section-id=\"z2endm\"\u003e\n\u003cstrong data-end=\"1751\" data-start=\"1723\"\u003e6.5kW Split-Phase Output\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e– Powers 120\/240V loads including large appliances\u003c\/li\u003e\n\u003cli data-end=\"1890\" data-start=\"1805\" data-section-id=\"1tgtryg\"\u003e\n\u003cstrong data-end=\"1832\" data-start=\"1807\"\u003e15kWh LiFePO₄ Battery\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e– Safe, high-capacity energy storage with long lifespan\u003c\/li\u003e\n\u003cli data-end=\"1969\" data-start=\"1891\" data-section-id=\"1o9om7f\"\u003e\n\u003cstrong data-end=\"1914\" data-start=\"1893\"\u003e6,000+ Cycle Life\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e– Built for years of daily use and long-term savings\u003c\/li\u003e\n\u003cli data-end=\"2059\" data-start=\"1970\" data-section-id=\"1j9zsb6\"\u003e\n\u003cstrong data-end=\"1999\" data-start=\"1972\"\u003eSolar + Generator Ready\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e– Flexible power input for continuous energy availability\u003c\/li\u003e\n\u003cli data-end=\"2135\" data-start=\"2060\" data-section-id=\"jzbji0\"\u003e\n\u003cstrong data-end=\"2082\" data-start=\"2062\"\u003e80A Pass-Through\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e– Supports high-demand loads and critical circuits\u003c\/li\u003e\n\u003cli data-end=\"2224\" data-start=\"2136\" data-section-id=\"4emd02\"\u003e\n\u003cstrong data-end=\"2165\" data-start=\"2138\"\u003eAdvanced BMS Protection\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e– Multi-layer protection for safe and reliable operation\u003c\/li\u003e\n\u003cli data-end=\"2303\" data-start=\"2225\" data-section-id=\"1v2h3jo\"\u003e\n\u003cstrong data-end=\"2248\" data-start=\"2227\"\u003eModular Expansion\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e– Easily scale storage capacity as energy needs grow\u003c\/li\u003e\n\u003cli data-end=\"2380\" data-start=\"2304\" data-section-id=\"1q5cfeh\"\u003e\n\u003cstrong data-end=\"2341\" data-start=\"2306\"\u003eUPS Backup Capability (15–30ms)\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e– Seamless transition during outages\u003c\/li\u003e\n\u003cli data-end=\"2462\" data-start=\"2381\" data-section-id=\"1uk815u\"\u003e\n\u003cstrong data-end=\"2406\" data-start=\"2383\"\u003eIndoor-Rated Design\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e– Intended for installation in protected environments\u003c\/li\u003e\n\u003cli data-end=\"2529\" data-start=\"2463\" data-section-id=\"1ph7tfo\"\u003e\n\u003cstrong data-end=\"2495\" data-start=\"2465\"\u003eMaintenance-Free Operation\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e– No routine servicing required\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eA\u003cspan\u003e \u003c\/span\u003e\u003cstrong data-end=\"2583\" data-start=\"2538\"\u003ereliable, scalable off-grid energy system\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ebuilt for performance, flexibility, and long-term independence—backed by U.S.-based support you can trust.\u003c\/p\u003e\n\u003ch3 class=\"bb-justify-between\"\u003e\u003cstrong\u003eItems Quantify depends on Your ESS Configuration choice. \u003c\/strong\u003e\u003c\/h3\u003e\n\u003cdiv class=\"bb-items-included-frontend\"\u003e\n\u003cdiv class=\"bb-item-frontend\"\u003e\n\u003cdiv class=\"bb-item-info\"\u003e\n\u003cspan class=\"bb-item-title\"\u003e48V 15kWH NEXUS LiFePO4 Battery\u003c\/span\u003e\u003cspan class=\"bb-item-sku\"\u003eF-NXUS-48150-G1\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bb-item-frontend\"\u003e\n\u003cdiv class=\"bb-item-info\"\u003e\n\u003cspan class=\"bb-item-title\"\u003eAPEX-6.5K Off-Grid Inverter\u003c\/span\u003e\u003cspan class=\"bb-item-sku\"\u003eINV034\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"bb-item-frontend\"\u003e\n\u003cdiv class=\"bb-item-info\"\u003e\n\u003cspan class=\"bb-item-title\"\u003e2AWG (Black and Red) 3FT Ring to Ring Terminal Cable\u003c\/span\u003e\u003cspan class=\"bb-item-sku\"\u003eCBL086\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ch5\u003e\n\u003cmeta charset=\"utf-8\"\u003e \u003cspan\u003eDownloads \u0026amp; Specifications\u003c\/span\u003e\n\u003c\/h5\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\u003cspan class=\"row-key\"\u003eBattery Specifications:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eNEXUS 15KWh\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eSystem Voltage:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e48V\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\"\u003e51.2V\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eChemistry:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eLiFePO4\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eUsable Energy (kWh):\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e15kWh\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eAh Capacity:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e300Ah\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eCell Configuration:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e16S1P\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\"\u003e140A\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eMax Continuous Power:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e7.6kW\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\u003cspan class=\"row-key\"\u003eMax Discharge Peak Current:270A(1s)\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eMax Charge Current:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e140A\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\"\u003e53.5V-57.6V\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\"\u003e48V-57.6V\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eMax Charge Voltage:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e57.9V\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eSuggested Low Voltage Cutoff:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e50.8V\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eCharge Temp Range:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e32°F to 113°F\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eDischarge Temp Range:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e-4°F to 113°F\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eOptimal Discharge Temp:59\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e°F to 95°F\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eStorage Temp Range (SoC \u0026gt;50%):\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e(1 month-4°F ~ 113°F | 3 months: -4°F ~ 95°F | 6 months: -4°F ~ 77°F)\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\"\u003e10%-95% (No Condensation)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eWeight (lbs):\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e~315 lbs\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eDimensions (WxHxD):\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e19.7 x 27.5 x 15.7 in (500×700×400 mm)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eAltitude Limit:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e\u0026lt;2000m\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eMax Connections:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e15 in parallel (up to 225kWh)\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 \/ RJ45 \/ CAN\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\"\u003eIP54\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eInstallation:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eIndoor Floor-standing\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\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\"\u003eDocument Title:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eAPEX-6.5K \u0026amp; APEX 10K INVERTER SPECIFICATIONS\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eBrand:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eBigBattery\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eModel:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eAPEX-6.5K \/ APEX-10K\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eSection:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eInverter output\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\"\u003eAPEX-6.5K: 6,500W; APEX-10K: 10,000W\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eMax. Output Power:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eAPEX-6.5K: 13,000VA; APEX-10K: 20,000VA\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eRated Output Voltage:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e120\/240 Vac (single-phase \/ split-phase)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eLoad capacity of motors:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eAPEX-6.5K: 4 HP; APEX-10K: 6 HP\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eRated Frequency:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e50\/60Hz\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eOutput Wave:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003ePure sine wave\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eSwitching Time:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e10ms (typical value)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eSection:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eBattery\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-ion battery \/ lead-acid battery \/ user-defined battery\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eRated Battery Voltage:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e48V\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. Solar Charging Current:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eAPEX-6.5K: 140A; APEX-10K: 200A\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eMax. Grid \/ Generator Charging Current:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eAPEX-6.5K: 80A; APEX-10K: 120A\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eMax. Hybrid Charge Current:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eAPEX-6.5K: 140A; APEX-10K: 200A\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eSection:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eSolar input\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eNo. of MPPT:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e1 + 1\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eMax. Input Power:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eAPEX-6.5K: 5,000W + 5,000W; APEX-10K: 5,000W + 5,500W\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eMax. Input Current:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eAPEX-6.5K: 18A + 18A; APEX-10K: 22A + 22A\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eMax. Open Circuit Voltage:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e550Vdc + 550Vdc\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eMPPT Voltage Range:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e125–450Vdc\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eSection:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eGrid \/ Generator input\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eInput Voltage Range:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e65–140Vac\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eInput Frequency Range:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e50\/60Hz\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eBypass Overload Current:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eAPEX-6.5K: 40A; APEX-10K: 63A\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eAC Inputs:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eAPEX-6.5K: 2 inputs (Grid \u0026amp; Generator); APEX-10K: 1 input (Grid or Generator)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eSection:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eEfficiency\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\"\u003e99.9%\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eMPPT Tracking Efficiency:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eAPEX-6.5K: 93%; APEX-10K: 92%\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eParallel Capacity:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eUp to 6 units (3 or more units in parallel can form a three-phase output)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eSection:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eGeneral data\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eDimension:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eAPEX-6.5K: 25.51 × 16.14 × 5.51 inches; APEX-10K: 28.46 × 17.64 × 5.91 inches\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\"\u003eAPEX-6.5K: 48 lbs; APEX-10K: 62 lbs\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eProtection Degree:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eIP20 (indoor only)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eTemperature:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e14–131°F, derate above 113°F\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eExternal Module (Optional):\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eWi-Fi \/ GPRS\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eCertificate:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eUL1741 \/ RoHS \/ EN61000-6-1 \/ EC61000-6-3 \/ FCC Part15 Class B \/ IEC62109-1 \/ IEC62109-2\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eNoise:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003e\u0026lt;60dB\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\"\u003eIntelligent fan\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\"\u003e5 years\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eCommunication:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eRS485 \/ CAN \/ USB \/ Dry contact\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eIntegrated Circuit Breaker:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eUtility \/ Load \/ Battery \/ PV\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eSection:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eOverload protection\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eOverload protection behavior:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eAfter overload protection is enabled, the inverter output will be restored after 3 minutes, and after 5 times of overload, the output will be off until the inverter is restarted. (102% \u0026lt; APEX-10K load \u0026lt; 110%): an error will be reported and the output will be turned off after 5 minutes. (110% \u0026lt; load \u0026lt; 125%): an error will be reported and the output will be turned off after 10 seconds. Load \u0026gt; 125%: an error will be reported and the output will be turned off after 5 seconds.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cspan class=\"row-key\"\u003eProtection features:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eHas PV input current limiting protection, PV input over-voltage protection, PV night reverse current protection, AC input over-voltage protection, AC input under-voltage protection, battery over-voltage protection, battery under-voltage protection, battery over-current protection, AC output short-circuit protection, heat sink over-temperature protection, inverter over-load protection.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"table-row\"\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\n\u003cspan class=\"row-key\"\u003eSKU#:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eK0191, K0192, K0193, K0194, K0195\u003c\/span\u003e\n\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\/2026\/01\/Nexus-SpecSheet.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\/12\/NEXUS-User-Manual1.2.3.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\u003cmeta charset=\"utf-8\"\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\n\u003cspan class=\"row-key\"\u003eSKU#:\u003c\/span\u003e\u003cspan class=\"row-value\"\u003eK0191, K0192, K0193, K0194, K0195\u003c\/span\u003e\n\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\/2026\/02\/APEX-SpecSheet0202.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\/2026\/01\/BigBattery-Apex-6.5-User-Manual.docx.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\u003ch3 class=\"table-row\"\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cdiv class=\"table-row\"\u003e\n\u003cmeta charset=\"utf-8\"\u003e\n\u003cdiv class=\"shoptimizer-archive\"\u003e\n\u003cdiv class=\"col-full\"\u003e\n\u003cdiv id=\"primary\" class=\"content-area\"\u003e\u003cmain id=\"main\" class=\"site-main\" role=\"main\"\u003e\n\u003cdiv id=\"product-200734\" class=\"product type-product post-200734 status-publish first instock product_cat-off-grid-solar has-post-thumbnail taxable shipping-taxable purchasable product-type-variable has-default-attributes\"\u003e\n\u003cdiv class=\"product__desc\"\u003e\n\u003cdiv class=\"product__desc-wrapper\"\u003e\n\u003cdiv class=\"bb_container\"\u003e\n\u003cdiv class=\"bb_row\"\u003e\n\u003cdiv class=\"bb_w-6 bb_product_tabs\"\u003e\n\u003cdiv class=\"bb_tabs_content\"\u003e\n\u003cdiv class=\"bb_tab_content pad-1 active\" id=\"warranty-info-tab\"\u003e\n\u003cp data-start=\"102\" data-end=\"273\"\u003eAt BigBattery, we stand behind the quality and reliability of our products. Our warranty coverage is designed to give you confidence and peace of mind with every purchase.\u003c\/p\u003e\n\u003cul data-start=\"275\" data-end=\"399\"\u003e\n\u003cli data-section-id=\"1qa9nq6\" data-start=\"275\" data-end=\"341\"\u003e\n\u003cstrong data-start=\"277\" data-end=\"297\"\u003eBattery:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eCovered by a\u003cspan\u003e \u003c\/span\u003e\u003cstrong data-start=\"311\" data-end=\"339\"\u003e12-Year Limited Warranty\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"r3m7yd\" data-start=\"342\" data-end=\"399\"\u003e\n\u003cstrong data-start=\"344\" data-end=\"358\"\u003eInverter:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eCovered by a\u003cspan\u003e \u003c\/span\u003e\u003cstrong data-start=\"372\" data-end=\"399\"\u003e5-Year Limited Warranty\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"401\" data-end=\"487\"\u003eFor full details on coverage, terms, and conditions, please visit our\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/bigbattery.com\/policies\/\"\u003e\u003cstrong data-start=\"471\" data-end=\"486\"\u003ePolicy Page\u003c\/strong\u003e\u003c\/a\u003e.\u003c\/p\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\/main\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003csection id=\"footer-new-section\"\u003e\u003cfooter id=\"footer\" class=\"footer\"\u003e\n\u003cdiv class=\"custom-shape custom-shape-top\" data-negative=\"false\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 1000 100\" preserveaspectratio=\"none\"\u003e\u003cpath class=\"custom-shape-fill\" opacity=\"0.33\" d=\"M473,67.3c-203.9,88.3-263.1-34-320.3,0C66,119.1,0,59.7,0,59.7V0h1000v59.7 c0,0-62.1,26.1-94.9,29.3c-32.8,3.3-62.8-12.3-75.8-22.1C806,49.6,745.3,8.7,694.9,4.7S492.4,59,473,67.3z\"\u003e\u003c\/path\u003e\u003cpath class=\"custom-shape-fill\" opacity=\"0.66\" d=\"M734,67.3c-45.5,0-77.2-23.2-129.1-39.1c-28.6-8.7-150.3-10.1-254,39.1 s-91.7-34.4-149.2,0C115.7,118.3,0,39.8,0,39.8V0h1000v36.5c0,0-28.2-18.5-92.1-18.5C810.2,18.1,775.7,67.3,734,67.3z\"\u003e\u003c\/path\u003e\u003cpath class=\"custom-shape-fill\" d=\"M766.1,28.9c-200-57.5-266,65.5-395.1,19.5C242,1.8,242,5.4,184.8,20.6C128,35.8,132.3,44.9,89.9,52.5C28.6,63.7,0,0,0,0 h1000c0,0-9.9,40.9-83.6,48.1S829.6,47,766.1,28.9z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv class=\"footer__container\"\u003e\n\u003cdiv class=\"footer__body\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/footer\u003e\u003c\/section\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\u003c\/div\u003e","brand":"BigBattery","offers":[{"title":"1x Nexus + 1x APEX 6.5K","offer_id":48630756835574,"sku":"K0191","price":4535.0,"currency_code":"USD","in_stock":true},{"title":"2x Nexus + 1x APEX 6.5K","offer_id":50453687632118,"sku":"K0192","price":7680.0,"currency_code":"USD","in_stock":true},{"title":"3x Nexus + 1x APEX 6.5K","offer_id":50453687664886,"sku":"K0193","price":10725.0,"currency_code":"USD","in_stock":true},{"title":"2x Nexus + 2x APEX 6.5K","offer_id":50453687697654,"sku":"K0194","price":9235.0,"currency_code":"USD","in_stock":true},{"title":"3x Nexus + 3x APEX 6.5K","offer_id":50453687730422,"sku":"K0195","price":13835.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0549\/3738\/7254\/files\/Nexus-Apex-6.5K-Default-scaled-2.webp?v=1776534806","url":"https:\/\/ecopowerit.com\/products\/bigbattery-nexus-apex-6-5k-off-grid-system","provider":"EcoPowerit","version":"1.0","type":"link"}