{"product_id":"bigbattery-nexus-apex-6-5k-off-grid-system-k0191","title":"BigBattery | NEXUS + APEX-6.5K Off-Grid System | K0191","description":"\u003ch2\u003eIntroducing the APEX Inverter Series\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eBigBattery APEX Off-Grid Hybrid Inverter Series (6.5K \u0026amp; 10K)\u003c\/strong\u003e is engineered for dependable, whole-home energy independence. Available in two power classes to suit a wide range of system sizes, both models deliver \u003cstrong\u003etrue split-phase 120\/240V output at 50\/60Hz\u003c\/strong\u003e with \u003cstrong\u003eclean, pure sine-wave power\u003c\/strong\u003e. Designed to integrate seamlessly with modern \u003cstrong\u003e48V LiFePO₄ battery banks\u003c\/strong\u003e, the APEX series provides stable, efficient performance for demanding off-grid applications.\u003c\/p\u003e\n\u003cp\u003eBuilt for real-world autonomy, APEX supports \u003cstrong\u003esolar, grid, and generator inputs\u003c\/strong\u003e, allowing your system to remain powered around the clock—regardless of weather, season, or location.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eBuilt for Demanding Loads and Harsh Environments\u003c\/h2\u003e\n\u003cp\u003eThe APEX series is designed to handle high-demand electrical loads with confidence. An \u003cstrong\u003e80A AC pass-through capability\u003c\/strong\u003e allows large appliances and critical circuits to operate smoothly, while \u003cstrong\u003ewide operating temperature ranges\u003c\/strong\u003e ensure reliable performance across varying climates. Thoughtful design elements such as \u003cstrong\u003einstaller-friendly bottom-entry wiring\u003c\/strong\u003e, integrated circuit breakers, and comprehensive electronic protections make APEX a rugged and practical foundation for cabins, homesteads, remote residences, and off-grid properties.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eWhole-Home Split-Phase Power\u003c\/h2\u003e\n\u003cp\u003eBoth APEX models deliver \u003cstrong\u003etrue 120\/240V split-phase power\u003c\/strong\u003e, enabling operation of larger appliances, well pumps, HVAC components, and essential household circuits. The pure sine-wave output ensures compatibility with sensitive electronics, making APEX ideal for full off-grid homes and demanding residential installations.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eSolar-Ready Hybrid Operation\u003c\/h2\u003e\n\u003cp\u003eThe APEX-6.5K supports \u003cstrong\u003esimultaneous solar and generator inputs\u003c\/strong\u003e, allowing seamless charging and load support when sunlight is limited. When solar production drops, a generator can automatically maintain system operation without interruption.\u003cbr\u003e\u003cem\u003eInput configurations differ between models—refer to the specification sheet for full details.\u003c\/em\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eOff-Grid Reliability by Design\u003c\/h2\u003e\n\u003cp\u003eWith integrated protections and a clean wiring layout, the APEX inverter is designed for long-term reliability in remote environments. Built-in safeguards protect against overloads, voltage irregularities, temperature extremes, and short circuits—helping ensure safe and dependable system operation over time.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eGo Big on Power\u003c\/h2\u003e\n\u003cp\u003eWhen paired with the \u003cstrong\u003eNEXUS battery system\u003c\/strong\u003e, the APEX inverter series forms a complete, high-performance \u003cstrong\u003eenergy storage solution\u003c\/strong\u003e for off-grid enthusiasts. Whether powering a compact cabin, a tiny home, or a large ranch property, this ESS is designed to \u003cstrong\u003emaximize energy independence\u003c\/strong\u003e, protect against outages and blackouts, and keep your system running when it matters most.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2\u003eInverter Input Overview\u003c\/h2\u003e\n\u003cp\u003eBoth APEX-6.5K and APEX-10K support grid, load, battery, PV, parallel connections, USB, Wi-Fi, RS485\/CAN, and dry contact communication.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCT input\u003c\/strong\u003e is available on the APEX-6.5K only.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eAPEX-10K\u003c\/strong\u003e uses a \u003cstrong\u003esingle AC input\u003c\/strong\u003e that supports \u003cstrong\u003eeither grid or generator (not simultaneously)\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eInverter Performance Highlights\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRated Output Power\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eAPEX-6.5K: 6,500W\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAPEX-10K: 10,000W\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMaximum Output Power\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eAPEX-6.5K: 13,000VA\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAPEX-10K: 20,000VA\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMotor Load Capacity\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eAPEX-6.5K: up to 4 HP\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAPEX-10K: up to 6 HP\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBattery System\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e48V nominal system\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e40–60Vdc operating range\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCompatible with lithium-ion, lead-acid, and user-defined battery profiles\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSolar Input (Dual MPPT)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eAPEX-6.5K: 5,000W + 5,000W\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eAPEX-10K: 5,000W + 5,500W\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMPPT voltage range: 125–450Vdc\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCharging Capability\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eMax solar charge current: up to 200A\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMax grid\/generator charge current: up to 120A\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eEfficiency\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eMaximum inverter efficiency: 99.9%\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMPPT tracking efficiency: up to 93%\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eParallel Operation\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eUp to 6 units in parallel\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eThree-phase output supported with more than three units\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003eProtection, Compliance, and Reliability\u003c\/h2\u003e\n\u003cp\u003eThe APEX inverter series includes extensive built-in protections, including PV input current limiting, over-voltage and under-voltage protection, battery over-current safeguards, thermal protection, overload shutdown logic, and short-circuit protection. Intelligent fan cooling keeps noise below \u003cstrong\u003e60dB\u003c\/strong\u003e, while UL and international certifications ensure compliance with industry safety standards.\u003c\/p\u003e\n\u003cp\u003eEach inverter is backed by a \u003cstrong\u003e5-year warranty\u003c\/strong\u003e, providing long-term confidence in performance and durability.\u003c\/p\u003e","brand":"BigBattery","offers":[{"title":"Default Title","offer_id":51546790887711,"sku":"K0191","price":4535.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0887\/1965\/5199\/files\/5-1-1300x731.png?v=1770267967","url":"https:\/\/offgridselection.com\/products\/bigbattery-nexus-apex-6-5k-off-grid-system-k0191","provider":"Off Grid Selection","version":"1.0","type":"link"}