{"product_id":"bigbattery-nexus-2-apex-6-5k-off-grid-ess-system-16-48kwh-lifepo4-6-5kw-120-240v-inverter-k0333","title":"BigBattery | NEXUS 2 + APEX-6.5K Off-Grid ESS System | 16-48kWh LiFePO4 + 6.5kW 120\/240V Inverter","description":"\u003ch3\u003eBigBattery NEXUS 2 + APEX-6.5K Off-Grid ESS System\u003c\/h3\u003e\u003cp\u003eThe BigBattery NEXUS 2 + APEX-6.5K ESS System is a complete off-grid energy storage package that pairs BigBattery's 16.08kWh NEXUS 2 LiFePO4 battery with the APEX-6.5K split-phase hybrid inverter. The two are designed to work together, with closed-loop battery-to-inverter communication for accurate state-of-charge, charging control and protection.\u003c\/p\u003e\u003cp\u003eChoose the system size that fits your property: start with one battery and one inverter (16kWh storage, 6.5kW output), add batteries for longer runtime, or add inverters for more power. Each NEXUS 2 battery includes self-heating for cold-weather charging and built-in aerosol fire suppression, and each APEX-6.5K accepts up to 10kW of solar with separate grid and generator inputs.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMatched BigBattery system: NEXUS 2 battery + APEX-6.5K inverter with closed-loop communication\u003c\/li\u003e\n\u003cli\u003e16.08kWh LiFePO4 per battery, 314Ah, 8,000+ cycle life\u003c\/li\u003e\n\u003cli\u003e6.5kW continuous \/ 13kVA peak 120\/240V split-phase pure sine wave output per inverter\u003c\/li\u003e\n\u003cli\u003eUp to 10kW PV input per inverter across 2 MPPTs (550V DC max)\u003c\/li\u003e\n\u003cli\u003eSeparate grid and generator inputs with 80A pass-through\u003c\/li\u003e\n\u003cli\u003eBattery self-heating for cold-climate charging and integrated aerosol fire suppression\u003c\/li\u003e\n\u003cli\u003eExpandable: up to 15 NEXUS 2 batteries (240kWh) and up to 6 APEX inverters in parallel\u003c\/li\u003e\n\u003cli\u003eCompact floor-standing batteries, no wall mounting required\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eIdeal Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOff-grid homes, cabins and homesteads\u003c\/li\u003e\n\u003cli\u003eRanches, farms and remote properties\u003c\/li\u003e\n\u003cli\u003eWhole-home or critical-load backup power\u003c\/li\u003e\n\u003cli\u003eShops, outbuildings and RV\/tiny-home setups\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBigBattery NEXUS 2 (F-NXUS2-48161-G1)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery Energy\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e16.08kWh per battery (314Ah, 51.2V LiFePO4)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery Discharge\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e150A continuous \/ 270A peak per battery\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery Max Charge Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e140A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInverter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBigBattery APEX-6.5K (INV034)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInverter Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6,500W continuous \/ 13,000VA peak per inverter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e120\/240V AC split-phase, pure sine wave\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax PV Input\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5,000W + 5,000W per inverter (2 MPPTs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax PV Open Circuit Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e550V DC per MPPT\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMPPT Voltage Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e125 – 450V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax Solar Charge Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e140A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax Grid\/Generator Charge Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e80A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTransfer Time\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10 ms (typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery Expansion\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 15 batteries (240kWh)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInverter Parallel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 6 units\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInverter Certifications\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUL1741, IEC62109-1\/-2, FCC Part 15 Class B\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInverter Protection Degree\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIP20 (indoor only)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003e\u003cem\u003eSystem options: 1 battery + 1 inverter (16kWh \/ 6.5kW), 2 batteries + 1 inverter (32kWh \/ 6.5kW), 3 batteries + 1 inverter (48kWh \/ 6.5kW), 2 batteries + 2 inverters (32kWh \/ 13kW), or 3 batteries + 3 inverters (48kWh \/ 19.5kW). Solar panels are not included.\u003c\/em\u003e\u003c\/p\u003e\u003ch3\u003eWarranty \u0026amp; Support\u003c\/h3\u003e\u003cp\u003e12-year BigBattery warranty on the NEXUS 2 battery and 5-year warranty on the APEX-6.5K inverter, with lifetime USA-based technical support. Ships from Texas, USA.\u003c\/p\u003e","brand":"BigBattery","offers":[{"title":"1x NEXUS 2 + 1x APEX-6.5K (16kWh \/ 6.5kW)","offer_id":53233723703583,"sku":"K0333","price":4305.0,"currency_code":"USD","in_stock":true},{"title":"2x NEXUS 2 + 1x APEX-6.5K (32kWh \/ 6.5kW)","offer_id":53233723736351,"sku":"K0334","price":7460.0,"currency_code":"USD","in_stock":true},{"title":"3x NEXUS 2 + 1x APEX-6.5K (48kWh \/ 6.5kW)","offer_id":53233723769119,"sku":"K0335","price":10515.0,"currency_code":"USD","in_stock":true},{"title":"2x NEXUS 2 + 2x APEX-6.5K (32kWh \/ 13kW)","offer_id":53233723801887,"sku":"K0336","price":8775.0,"currency_code":"USD","in_stock":true},{"title":"3x NEXUS 2 + 3x APEX-6.5K (48kWh \/ 19.5kW)","offer_id":53233723834655,"sku":"K0337","price":13145.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0887\/1965\/5199\/files\/K0333v2.webp?v=1794443447","url":"https:\/\/offgridselection.com\/products\/bigbattery-nexus-2-apex-6-5k-off-grid-ess-system-16-48kwh-lifepo4-6-5kw-120-240v-inverter-k0333","provider":"Off Grid Selection","version":"1.0","type":"link"}