{"product_id":"ethos-15-4wh-stackable-battery-3-module","title":"BigBattery Ethos 15.4kWh Stackable Battery (3 Module) - FREE SHIPPING","description":"\u003cp data-start=\"354\" data-end=\"762\"\u003eThe Ethos 15.4 kWh Stackable Battery System combines three 5.12 kWh Ethos modules into a robust, pre-configured energy-storage system delivering 15.36 kWh of reliable, safe power. Engineered for flexibility and longevity, it’s the perfect solution for larger residential solar arrays, small commercial sites, and off-grid energy systems requiring scalable capacity and dependable LiFePO₄ performance.\u003c\/p\u003e \u003ch3 data-start=\"764\" data-end=\"780\"\u003eKey Features\u003c\/h3\u003e \u003cul data-start=\"781\" data-end=\"1275\"\u003e \u003cli data-start=\"781\" data-end=\"876\"\u003e \u003cp data-start=\"783\" data-end=\"876\"\u003eHigh-Capacity Configuration: Three 5.12 kWh modules provide 15.36 kWh of usable energy.\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"877\" data-end=\"978\"\u003e \u003cp data-start=\"879\" data-end=\"978\"\u003eProven LiFePO₄ Chemistry: Stable, non-toxic, and thermally safe lithium iron phosphate cells.\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"979\" data-end=\"1085\"\u003e \u003cp data-start=\"981\" data-end=\"1085\"\u003eAdvanced Power Management: Built-in BMS with CANBus and RS485 for smart communication and control.\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"1086\" data-end=\"1176\"\u003e \u003cp data-start=\"1088\" data-end=\"1176\"\u003eIntegrated Control Box \u0026amp; Wiring: Pre-assembled components streamline installation.\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"1177\" data-end=\"1275\"\u003e \u003cp data-start=\"1179\" data-end=\"1275\"\u003eWeather-Resistant Design: IP65-rated housing ensures protection against dust and moisture.\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003ch3 data-start=\"1282\" data-end=\"1302\"\u003eProduct Overview\u003c\/h3\u003e \u003cp data-start=\"1304\" data-end=\"1591\"\u003eThe Ethos 15.4 kWh system is the next step in Ethos’ stackable battery series — a modular design that offers true scalability and simplicity. By pairing three 51.2 V 100 Ah modules in parallel, this system doubles and triples storage capacity without compromising voltage or stability.\u003c\/p\u003e \u003cp data-start=\"1593\" data-end=\"1909\"\u003eEach module contains its own smart Battery Management System (BMS) that monitors voltage, temperature, and current across cells for balanced and safe operation. The included Ethos Control Box connects the stack to the inverter using pre-terminated power and communication cables, making installation plug-and-play.\u003c\/p\u003e \u003cp data-start=\"1911\" data-end=\"2159\"\u003eThanks to its IP65 enclosure, this system can be mounted indoors or under covered outdoor locations. Its high cycle life (4,000–8,000 cycles @ 80 % DOD) and 10-year design life make it a durable investment for any long-term renewable application.\u003c\/p\u003e \u003cp data-start=\"2161\" data-end=\"2348\"\u003eIdeal for whole-home backup or medium commercial loads, the Ethos 15.4 kWh system offers a professional, compact, and scalable energy-storage solution that can grow along with your needs.\u003c\/p\u003e \u003ch3 data-start=\"2355\" data-end=\"2385\"\u003eTechnical Specifications\u003c\/h3\u003e \u003cdiv\u003e \u003cdiv tabindex=\"-1\"\u003e \u003ctable data-start=\"2387\" data-end=\"3540\"\u003e \u003cthead data-start=\"2387\" data-end=\"2414\"\u003e \u003ctr data-start=\"2387\" data-end=\"2414\"\u003e \u003cth data-start=\"2387\" data-end=\"2403\" data-col-size=\"sm\"\u003eSpecification\u003c\/th\u003e \u003cth data-start=\"2403\" data-end=\"2414\" data-col-size=\"md\"\u003eDetails\u003c\/th\u003e \u003c\/tr\u003e \u003c\/thead\u003e \u003ctbody data-start=\"2444\" data-end=\"3540\"\u003e \u003ctr data-start=\"2444\" data-end=\"2490\"\u003e \u003ctd data-start=\"2444\" data-end=\"2460\" data-col-size=\"sm\"\u003eConfiguration\u003c\/td\u003e \u003ctd data-start=\"2460\" data-end=\"2490\" data-col-size=\"md\"\u003e3 × Ethos 5.12 kWh Modules\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"2491\" data-end=\"2519\"\u003e \u003ctd data-start=\"2491\" data-end=\"2509\" data-col-size=\"sm\"\u003eNominal Voltage\u003c\/td\u003e \u003ctd data-start=\"2509\" data-end=\"2519\" data-col-size=\"md\"\u003e51.2 V\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"2520\" data-end=\"2553\"\u003e \u003ctd data-start=\"2520\" data-end=\"2537\" data-col-size=\"sm\"\u003eSystem Voltage\u003c\/td\u003e \u003ctd data-start=\"2537\" data-end=\"2553\" data-col-size=\"md\"\u003e48 V nominal\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"2554\" data-end=\"2593\"\u003e \u003ctd data-start=\"2554\" data-end=\"2571\" data-col-size=\"sm\"\u003eTotal Capacity\u003c\/td\u003e \u003ctd data-start=\"2571\" data-end=\"2593\" data-col-size=\"md\"\u003e15.36 kWh (300 Ah)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"2594\" data-end=\"2627\"\u003e \u003ctd data-start=\"2594\" data-end=\"2615\" data-col-size=\"sm\"\u003eCell Configuration\u003c\/td\u003e \u003ctd data-start=\"2615\" data-end=\"2627\" data-col-size=\"md\"\u003e16S × 3P\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"2628\" data-end=\"2668\"\u003e \u003ctd data-start=\"2628\" data-end=\"2653\" data-col-size=\"sm\"\u003eCharging Voltage Range\u003c\/td\u003e \u003ctd data-start=\"2653\" data-end=\"2668\" data-col-size=\"md\"\u003e55.6 – 57 V\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"2669\" data-end=\"2702\"\u003e \u003ctd data-start=\"2669\" data-end=\"2694\" data-col-size=\"sm\"\u003eMaximum Charge Voltage\u003c\/td\u003e \u003ctd data-start=\"2694\" data-end=\"2702\" data-col-size=\"md\"\u003e57 V\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"2703\" data-end=\"2742\"\u003e \u003ctd data-start=\"2703\" data-end=\"2729\" data-col-size=\"sm\"\u003eOperating Voltage Range\u003c\/td\u003e \u003ctd data-start=\"2729\" data-end=\"2742\" data-col-size=\"md\"\u003e48 – 57 V\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"2743\" data-end=\"2789\"\u003e \u003ctd data-start=\"2743\" data-end=\"2774\" data-col-size=\"sm\"\u003eSuggested Low Voltage Cutoff\u003c\/td\u003e \u003ctd data-start=\"2774\" data-end=\"2789\" data-col-size=\"md\"\u003e48 – 50.8 V\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"2790\" data-end=\"2830\"\u003e \u003ctd data-start=\"2790\" data-end=\"2821\" data-col-size=\"sm\"\u003eMaximum Continuous Discharge\u003c\/td\u003e \u003ctd data-start=\"2821\" data-end=\"2830\" data-col-size=\"md\"\u003e250 A\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"2831\" data-end=\"2872\"\u003e \u003ctd data-start=\"2831\" data-end=\"2858\" data-col-size=\"sm\"\u003eMaximum Continuous Power\u003c\/td\u003e \u003ctd data-start=\"2858\" data-end=\"2872\" data-col-size=\"md\"\u003e≈ 12,800 W\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"2873\" data-end=\"2915\"\u003e \u003ctd data-start=\"2873\" data-end=\"2898\" data-col-size=\"sm\"\u003ePeak Discharge Current\u003c\/td\u003e \u003ctd data-start=\"2898\" data-end=\"2915\" data-col-size=\"md\"\u003e300 A (≤ 5 s)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"2916\" data-end=\"2950\"\u003e \u003ctd data-start=\"2916\" data-end=\"2941\" data-col-size=\"sm\"\u003eMaximum Charge Current\u003c\/td\u003e \u003ctd data-start=\"2941\" data-end=\"2950\" data-col-size=\"md\"\u003e200 A\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"2951\" data-end=\"2985\"\u003e \u003ctd data-start=\"2951\" data-end=\"2975\" data-col-size=\"sm\"\u003eRound-Trip Efficiency\u003c\/td\u003e \u003ctd data-start=\"2975\" data-end=\"2985\" data-col-size=\"md\"\u003e≥ 95 %\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"2986\" data-end=\"3034\"\u003e \u003ctd data-start=\"2986\" data-end=\"2998\" data-col-size=\"sm\"\u003eChemistry\u003c\/td\u003e \u003ctd data-start=\"2998\" data-end=\"3034\" data-col-size=\"md\"\u003eLithium Iron Phosphate (LiFePO₄)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"3035\" data-end=\"3083\"\u003e \u003ctd data-start=\"3035\" data-end=\"3048\" data-col-size=\"sm\"\u003eCycle Life\u003c\/td\u003e \u003ctd data-start=\"3048\" data-end=\"3083\" data-col-size=\"md\"\u003e4,000 – 8,000 cycles @ 80 % DOD\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"3084\" data-end=\"3118\"\u003e \u003ctd data-start=\"3084\" data-end=\"3100\" data-col-size=\"sm\"\u003eCommunication\u003c\/td\u003e \u003ctd data-start=\"3100\" data-end=\"3118\" data-col-size=\"md\"\u003eCANBus \/ RS485\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"3119\" data-end=\"3146\"\u003e \u003ctd data-start=\"3119\" data-end=\"3138\" data-col-size=\"sm\"\u003eEnclosure Rating\u003c\/td\u003e \u003ctd data-start=\"3138\" data-end=\"3146\" data-col-size=\"md\"\u003eIP65\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"3147\" data-end=\"3190\"\u003e \u003ctd data-start=\"3147\" data-end=\"3174\" data-col-size=\"sm\"\u003eCharge Temperature Range\u003c\/td\u003e \u003ctd data-start=\"3174\" data-end=\"3190\" data-col-size=\"md\"\u003e0 °C – 45 °C\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"3191\" data-end=\"3239\"\u003e \u003ctd data-start=\"3191\" data-end=\"3221\" data-col-size=\"sm\"\u003eDischarge Temperature Range\u003c\/td\u003e \u003ctd data-start=\"3221\" data-end=\"3239\" data-col-size=\"md\"\u003e–20 °C – 60 °C\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"3240\" data-end=\"3310\"\u003e \u003ctd data-start=\"3240\" data-end=\"3275\" data-col-size=\"sm\"\u003eStorage Temperature (SoC \u0026gt; 50 %)\u003c\/td\u003e \u003ctd data-start=\"3275\" data-end=\"3310\" data-col-size=\"md\"\u003e–20 °C – 45 °C (up to 6 months)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"3311\" data-end=\"3388\"\u003e \u003ctd data-start=\"3311\" data-end=\"3334\" data-col-size=\"sm\"\u003eDimensions (Stacked)\u003c\/td\u003e \u003ctd data-start=\"3334\" data-end=\"3388\" data-col-size=\"md\"\u003eApprox. 170 × 674 × 1520 mm (6.7 × 26.5 × 59.8 in)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"3389\" data-end=\"3442\"\u003e \u003ctd data-start=\"3389\" data-end=\"3408\" data-col-size=\"sm\"\u003eWeight (Stacked)\u003c\/td\u003e \u003ctd data-start=\"3408\" data-end=\"3442\" data-col-size=\"md\"\u003e≈ 175 – 180 kg (385 – 397 lbs)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"3443\" data-end=\"3487\"\u003e \u003ctd data-start=\"3443\" data-end=\"3460\" data-col-size=\"sm\"\u003eCertifications\u003c\/td\u003e \u003ctd data-start=\"3460\" data-end=\"3487\" data-col-size=\"md\"\u003eUL9540A, UL1973, UN38.3\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"3488\" data-end=\"3516\"\u003e \u003ctd data-start=\"3488\" data-end=\"3502\" data-col-size=\"sm\"\u003eDesign Life\u003c\/td\u003e \u003ctd data-start=\"3502\" data-end=\"3516\" data-col-size=\"md\"\u003e10 + years\u003c\/td\u003e \u003c\/tr\u003e \u003ctr data-start=\"3517\" data-end=\"3540\"\u003e \u003ctd data-start=\"3517\" data-end=\"3528\" data-col-size=\"sm\"\u003eWarranty\u003c\/td\u003e \u003ctd data-start=\"3528\" data-end=\"3540\" data-col-size=\"md\"\u003e10 years\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003c\/div\u003e \u003c\/div\u003e \u003ch3 data-start=\"3547\" data-end=\"3568\"\u003e\u003c\/h3\u003e \u003ch3 data-start=\"3547\" data-end=\"3568\"\u003eIncluded in Kit\u003c\/h3\u003e \u003cp data-start=\"3570\" data-end=\"3601\"\u003eETHOS 15.4 kWh (3 Module)\u003c\/p\u003e \u003cp data-start=\"3603\" data-end=\"3625\"\u003eIncluded in Kit:\u003c\/p\u003e \u003cul data-start=\"3626\" data-end=\"3681\"\u003e \u003cli data-start=\"3626\" data-end=\"3681\"\u003e \u003cp data-start=\"3628\" data-end=\"3681\"\u003e(3) FETHS-48051-G1 – 5.12 kWh Ethos Battery Modules\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp data-start=\"3683\" data-end=\"3718\"\u003eIncluded in Each Battery Box:\u003c\/p\u003e \u003cul data-start=\"3719\" data-end=\"3907\"\u003e \u003cli data-start=\"3719\" data-end=\"3790\"\u003e \u003cp data-start=\"3721\" data-end=\"3790\"\u003e(1) Ethos Battery Module Red \u0026amp; Black Parallel Cable 0.7 ft (220 mm)\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"3791\" data-end=\"3855\"\u003e \u003cp data-start=\"3793\" data-end=\"3855\"\u003e(1) Ethos Battery Module Communication Cable 0.7 ft (220 mm)\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"3856\" data-end=\"3907\"\u003e \u003cp data-start=\"3858\" data-end=\"3907\"\u003e(2) L-Shaped Wall Mounting Brackets + Fasteners\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp data-start=\"3909\" data-end=\"3943\"\u003eIncluded in Control Box Kit:\u003c\/p\u003e \u003cul data-start=\"3944\" data-end=\"4159\"\u003e \u003cli data-start=\"3944\" data-end=\"4159\"\u003e \u003cp data-start=\"3946\" data-end=\"4159\"\u003e(1) CNT060 – Ethos Control Box \u0026amp; Accessories\u003cbr data-start=\"3990\" data-end=\"3993\"\u003e • (1) Ethos Stack Base\u003cbr data-start=\"4016\" data-end=\"4019\"\u003e • (2) Ethos Control Box to Inverter Power Cable Pairs 4.9 ft (1500 mm)\u003cbr data-start=\"4090\" data-end=\"4093\"\u003e • (1) Ethos Control Box to Inverter Comm Cable 4.9 ft (1500 mm)\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003cp data-start=\"4161\" data-end=\"4193\"\u003eAdditional Included Cable:\u003c\/p\u003e \u003cul data-start=\"4194\" data-end=\"4294\"\u003e \u003cli data-start=\"4194\" data-end=\"4294\"\u003e \u003cp data-start=\"4196\" data-end=\"4294\"\u003e(1) CBL091 – Ethos Battery Final Module to Control Box Power Cable Pair (3 Stack) 4 ft (1220 mm)\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e \u003ch3 data-start=\"4301\" data-end=\"4319\"\u003eApplications\u003c\/h3\u003e \u003cul data-start=\"4320\" data-end=\"4478\"\u003e \u003cli data-start=\"4320\" data-end=\"4360\"\u003e \u003cp data-start=\"4322\" data-end=\"4360\"\u003eResidential solar storage and backup\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"4361\" data-end=\"4399\"\u003e \u003cp data-start=\"4363\" data-end=\"4399\"\u003eOff-grid and hybrid energy systems\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"4400\" data-end=\"4439\"\u003e \u003cp data-start=\"4402\" data-end=\"4439\"\u003eCommercial and light industrial use\u003c\/p\u003e \u003c\/li\u003e \u003cli data-start=\"4440\" data-end=\"4478\"\u003e \u003cp data-start=\"4442\" data-end=\"4478\"\u003eExpandable microgrid installations\u003c\/p\u003e \u003c\/li\u003e \u003c\/ul\u003e","brand":"BigBattery","offers":[{"title":"Default Title","offer_id":55064591728979,"sku":"Ethos15.4","price":2130.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1076\/9324\/4755\/files\/OIP_0849d4aa-f255-405e-8ab3-01658b125240.jpg?v=1790371602","url":"https:\/\/progradewarehouse.com\/products\/ethos-15-4wh-stackable-battery-3-module","provider":"PRO GRADE WAREHOUSE","version":"1.0","type":"link"}