{"product_id":"fortress-power-espire-40kwh-outdoor-rated-nano-battery-fp-nano-s8-o","title":"Fortress Power eSpire 40kWh Outdoor-Rated Nano Battery | FP-Nano-S8-O","description":"\u003cp dir=\"ltr\"\u003eModular by design, this 40kWh battery cabinet scales commercial energy storage up to 5 units in parallel, all rated for outdoor deployment.\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003eKey Features\u003c\/h2\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eOutdoor-Rated Enclosure: IP55 protection allows direct outdoor installation without extra housing.\u003c\/li\u003e\n\u003cli\u003eModular Cabinet Design: Scales from a single 40kWh unit up to 5 units in parallel for larger capacity needs.\u003c\/li\u003e\n\u003cli\u003eTier 1 LFP Chemistry: Lithium Iron Phosphate cells deliver high thermal stability and long-term reliability.\u003c\/li\u003e\n\u003cli\u003eAdvanced BMS: Real-time monitoring, balancing, and protection across the full battery pack.\u003c\/li\u003e\n\u003cli\u003eLong-Term Warranty: 10-year coverage with 70% capacity retention at 8,000 cycles.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp dir=\"ltr\"\u003eNominal voltage sits at 409.6 Vdc, with an operating range of 358.4-460.8 Vdc across a 1P128S pack configuration.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eBuilt on an 8-rack configuration, this unit delivers 40.96 kWh of usable nominal energy at a 100Ah nominal cell capacity.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eMaximum discharge and charge current reaches 100A, supporting demand charge management and peak shaving applications.\u003c\/p\u003e\n\u003ch2 dir=\"ltr\"\u003eTechnical Specification\u003c\/h2\u003e\n\u003cdiv dir=\"ltr\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth scope=\"col\"\u003eItem\u003c\/th\u003e\n\u003cth scope=\"col\"\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eFP-Nano-S8-O\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated Battery Capacity\u003c\/td\u003e\n\u003ctd\u003e40 kWh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery Type\u003c\/td\u003e\n\u003ctd\u003eLFP (Lithium Iron Phosphate)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Capacity\u003c\/td\u003e\n\u003ctd\u003e100 Ah\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePack Configuration\u003c\/td\u003e\n\u003ctd\u003e1P128S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRack Configuration\u003c\/td\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Energy\u003c\/td\u003e\n\u003ctd\u003e40.96 kWh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Voltage\u003c\/td\u003e\n\u003ctd\u003e409.6 Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage Range\u003c\/td\u003e\n\u003ctd\u003e358.4 - 460.8 Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Discharge\/Charge Current\u003c\/td\u003e\n\u003ctd\u003e100 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnclosure Rating\u003c\/td\u003e\n\u003ctd\u003eIP55, Outdoor-Rated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-4°F to 122°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Parallel Units\u003c\/td\u003e\n\u003ctd\u003e5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e10 Years, 70% Retention at 8,000 Cycles\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e","brand":"Fortress Power","offers":[{"title":"Default Title","offer_id":54629343396150,"sku":null,"price":28500.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0903\/2233\/8102\/files\/Screenshot2026-09-22143327_eeef85bc-8df9-47ac-b9bb-eb63ec3072fc.png?v=1790132966","url":"https:\/\/thesolarstore.com\/products\/fortress-power-espire-40kwh-outdoor-rated-nano-battery-fp-nano-s8-o","provider":"The Solar Store","version":"1.0","type":"link"}