{"product_id":"bigbattery-nexus-apex-10k-off-grid-kit-15-kwh-48v-lifepo4","title":"BigBattery NEXUS + APEX 10K Off-Grid Kit | 15 kWh | 48V LiFePO4","description":"\u003cp\u003eThe single-battery configuration of the NEXUS + APEX 10K system: one BigBattery NEXUS 48V LiFePO4 battery — 15 kWh of storage — matched with the APEX 10K, the higher-output all-in-one inverter in the APEX line. With 10,000W of continuous split-phase 120\/240V output plus an integrated MPPT solar charge controller and battery charger, this kit suits properties whose challenge is peak power — larger motors, pumps, shop tools, several 240V appliances at once — while keeping storage at an entry-level footprint that can grow later.\u003c\/p\u003e\n\n\u003ch2\u003eWhat's in this kit\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e1 × BigBattery NEXUS 48V LiFePO4 battery (15 kWh)\u003c\/strong\u003e — lithium iron phosphate storage with a built-in battery management system (BMS). One NEXUS provides substantial standalone reserve, and multiple units combine to scale capacity as your needs grow.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e1 × APEX 10K off-grid inverter\u003c\/strong\u003e — an all-in-one unit for 48V battery systems: 10,000W of continuous split-phase 120\/240V output, integrated MPPT solar charge controller, and battery charger in a single chassis.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eIs this the right size for you?\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eThis configuration fits\u003c\/strong\u003e workshops, homesteads and properties with demanding peak loads but moderate daily energy use — the 10,000W inverter comfortably starts and runs heavy equipment, while 15 kWh of storage covers overnight and intermittent use.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSize up the storage if\u003c\/strong\u003e you draw on the bank heavily every day or your site sees long overcast stretches: the same system is offered with two or three NEXUS batteries (30 kWh and 45 kWh), and because NEXUS units combine, you can also start here and add batteries later.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eConsider the APEX 6.5K version if\u003c\/strong\u003e your loads are lighter — a cabin or backup-circuit application rarely needs 10kW of output, and the smaller inverter costs less.\u003c\/p\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eItem\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery\u003c\/td\u003e\n\u003ctd\u003e1 × BigBattery NEXUS, 48V LiFePO4, 15 kWh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery chemistry\u003c\/td\u003e\n\u003ctd\u003eLiFePO4 (lithium iron phosphate)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery management\u003c\/td\u003e\n\u003ctd\u003eBuilt-in BMS with cell monitoring and protection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInverter\u003c\/td\u003e\n\u003ctd\u003eAPEX 10K all-in-one: 10,000W continuous split-phase 120\/240V output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSolar charging\u003c\/td\u003e\n\u003ctd\u003eIntegrated MPPT solar charge controller (solar array sold separately)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery charging\u003c\/td\u003e\n\u003ctd\u003eIntegrated charger in the APEX 10K\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem voltage\u003c\/td\u003e\n\u003ctd\u003e48V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExpansion path\u003c\/td\u003e\n\u003ctd\u003eAdditional NEXUS batteries can be combined; 30 kWh and 45 kWh kit configurations are also available\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eWarranty \u0026amp; support\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eBattery:\u003c\/strong\u003e the NEXUS is covered by BigBattery's 12-year manufacturer warranty, backed by lifetime USA-based technical support. \u003cstrong\u003eInverter:\u003c\/strong\u003e the APEX 10K carries a 5-year limited manufacturer warranty.\u003c\/p\u003e\n\n\u003ch2\u003eCommon questions\u003c\/h2\u003e\n\n\u003ch3\u003eWhy choose the 10K inverter with only one battery?\u003c\/h3\u003e\n\u003cp\u003ePeak power and stored energy are separate questions. If your equipment needs high wattage in bursts — motor starts, welders, compressors, multiple 240V circuits — but your total daily consumption is modest, a big inverter with a single battery is the right-sized answer, and the battery bank can grow independently later.\u003c\/p\u003e\n\n\u003ch3\u003eCan I install this myself?\u003c\/h3\u003e\n\u003cp\u003ePlacing the battery and mounting the inverter are owner-level tasks, but the AC side — panel interconnection, grounding, bonding and code compliance — is work for a licensed electrician and typically requires a permit and inspection. Have your electrician review the system before ordering.\u003c\/p\u003e\n\n\u003ch3\u003eDoes this kit include solar panels?\u003c\/h3\u003e\n\u003cp\u003eNo. The MPPT input is ready for an array, but panels, racking and array wiring are sized to your site and sold separately.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the battery handle cold weather?\u003c\/h3\u003e\n\u003cp\u003eLiFePO4 loses usable capacity in the cold, and charging below freezing damages cells. Keep the NEXUS in a space that stays above freezing.\u003c\/p\u003e","brand":"BigBattery","offers":[{"title":"1 × NEXUS — 15 kWh","offer_id":49148532392091,"sku":"K0196","price":4725.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0746\/0614\/9787\/files\/Nexus-Apex-10K-scaled-2.webp?v=1785535419","url":"https:\/\/offgridhorizon.com\/products\/bigbattery-nexus-apex-10k-off-grid-kit-15-kwh-48v-lifepo4","provider":"OffGrid Horizon","version":"1.0","type":"link"}