{"product_id":"custom-lithium-ultra-slim-xl-1120ah-lifepo4-battery","title":"Next Generation Ultra Slim XL 1120Ah LiFePO4 Battery | 380A BMS","description":"\u003cdiv style=\"font-weight: bold;\"\u003e\n\u003ch2 style=\"color: #dd1d1d;\"\u003e🔋 CUSTOM LITHIUM NEXT GENERATION ULTRA SLIM XL 1120AH LiFePO4 BATTERY – AUSTRALIAN MADE\u003c\/h2\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e1120Ah • 12.8V LiFePO4 • 380A Continuous Discharge • Modified Heltech BMS • Active Balancing • Aluminium Enclosure • 100kg • 7 Year Warranty\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eCustom Lithium Next Generation Ultra Slim XL 1120Ah Battery\u003c\/strong\u003e is designed for very large off-grid electrical systems requiring exceptional energy storage in a single purpose-built lithium battery.\u003c\/p\u003e\n\u003cp\u003eWith an enormous \u003cstrong\u003e1120Ah of LiFePO4 capacity\u003c\/strong\u003e, the Ultra Slim XL is aimed at high-demand caravan, motorhome, canopy and remote-power installations where extended runtime and substantial usable energy are priorities.\u003c\/p\u003e\n\u003cp\u003eA stated \u003cstrong\u003e380A continuous discharge capability\u003c\/strong\u003e, premium A-grade automotive LiFePO4 cells, modified high-current Heltech BMS and active cell balancing provide the foundation for demanding 12V systems and appropriately engineered high-power inverter installations.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e⭐ KEY FEATURES\u003c\/h3\u003e\n\u003cp\u003e\u003cspan style=\"color: #80ff00;\"\u003e🔋 Massive 1120Ah LiFePO4 Capacity\u003c\/span\u003e\u003cbr\u003eProvides exceptional stored energy for serious off-grid systems, large caravans, motorhomes, canopies and remote-work installations.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #80ff00;\"\u003e⚡ 380A Continuous Discharge\u003c\/span\u003e\u003cbr\u003eHigh-current capability supports demanding 12V loads and appropriately designed inverter systems.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #80ff00;\"\u003e🛡️ Modified Heltech BMS\u003c\/span\u003e\u003cbr\u003eThe supplied product information specifies a modified Heltech BMS designed to protect against overheating, over-discharge and low-temperature charging conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #80ff00;\"\u003e❄️ Low-Temperature Cut-Off Protection\u003c\/span\u003e\u003cbr\u003eThe BMS is stated to incorporate low-temperature cut-off protection to help protect the battery in unsuitable charging conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #80ff00;\"\u003e⚖️ Active Cell Balancing\u003c\/span\u003e\u003cbr\u003eThe integrated active balancer helps manage individual cells and maintain consistent battery performance.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #80ff00;\"\u003e🔋 Premium A-Grade Automotive LiFePO4 Cells\u003c\/span\u003e\u003cbr\u003eBuilt using premium lithium iron phosphate cells for demanding mobile and off-grid applications.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #80ff00;\"\u003e🛡️ Aluminium Enclosure\u003c\/span\u003e\u003cbr\u003eThe custom aluminium enclosure is designed to protect the cells while packaging substantial capacity into a purpose-built form factor.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #80ff00;\"\u003e🚙 Designed for Rugged Touring Conditions\u003c\/span\u003e\u003cbr\u003eInternal components are insulated against vibration to help protect the battery during corrugated-road and remote-area travel.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #80ff00;\"\u003e🧪 Individually Bench Tested\u003c\/span\u003e\u003cbr\u003eEach battery is individually bench tested before supply as part of Custom Lithium's quality-control process.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #80ff00;\"\u003e🇦🇺 Australian Made\u003c\/span\u003e\u003cbr\u003eBuilt in Brisbane and supplied as a certified Australian Made product.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #80ff00;\"\u003e🛡️ 7 Year Warranty\u003c\/span\u003e\u003cbr\u003eBacked by a full 7-year manufacturer warranty.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e🚐 BUILT FOR LARGE OFF-GRID SYSTEMS\u003c\/h3\u003e\n\u003cp\u003eThe Ultra Slim XL 1120Ah is intended for systems where battery capacity is a major priority and extended operation away from mains power is required.\u003c\/p\u003e\n\u003cp\u003eSuitable applications can include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLarge caravans\u003c\/li\u003e\n\u003cli\u003eMotorhomes \u0026amp; RVs\u003c\/li\u003e\n\u003cli\u003eHigh-capacity 4WD canopy systems\u003c\/li\u003e\n\u003cli\u003eRemote-work vehicles\u003c\/li\u003e\n\u003cli\u003eMobile trade installations\u003c\/li\u003e\n\u003cli\u003eLong-duration off-grid systems\u003c\/li\u003e\n\u003cli\u003eHigh-demand inverter-based electrical systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e🔩 IMPORTANT MOUNTING REQUIREMENTS\u003c\/h3\u003e\n\u003cp\u003eDue to the size and weight of the Ultra Slim XL battery, Custom Lithium recommends that it be \u003cstrong\u003ehard mounted directly to the vehicle or canopy floor\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThe supplied installation guidance allows the battery to be mounted either:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFlat on its broad face surface\u003c\/li\u003e\n\u003cli\u003eOn one of its longer sides, as shown in the manufacturer's installation examples\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis allows the battery's weight to be fully supported by the floor rather than relying on a mounting rail or unsupported bracket arrangement.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #dd1d1d;\"\u003e⚠️ At approximately 100kg, this battery requires substantial structural support and secure mechanical retention. The installation must account for vehicle movement, braking loads, vibration and rough-road conditions.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #dd1d1d;\"\u003e⚠️ Custom Lithium recommends installation by a qualified auto electrician.\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e⚡ SERIOUS POWER FOR HIGH-DEMAND EQUIPMENT\u003c\/h3\u003e\n\u003cp\u003eWith 1120Ah of stored capacity and substantial continuous-current capability, the Ultra Slim XL can support compatible equipment including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e❄️ Multiple 12V fridges \u0026amp; freezers\u003c\/li\u003e\n\u003cli\u003e💡 Vehicle \u0026amp; camp lighting\u003c\/li\u003e\n\u003cli\u003e📡 Starlink\u003c\/li\u003e\n\u003cli\u003e💻 Computers \u0026amp; electronics\u003c\/li\u003e\n\u003cli\u003e📷 Cameras \u0026amp; charging equipment\u003c\/li\u003e\n\u003cli\u003e💨 Air compressors\u003c\/li\u003e\n\u003cli\u003e🛠️ Tools \u0026amp; battery chargers\u003c\/li\u003e\n\u003cli\u003e☕ Coffee machines through a suitable inverter\u003c\/li\u003e\n\u003cli\u003e🍳 Induction cooking through an appropriately engineered inverter system\u003c\/li\u003e\n\u003cli\u003e🔌 Compatible 240V appliances through a suitable inverter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e🔋 PREMIUM LiFePO4 CELL TECHNOLOGY\u003c\/h3\u003e\n\u003cp\u003eThe battery is constructed using \u003cstrong\u003eA-grade automotive LiFePO4 cells\u003c\/strong\u003e combined with a modified high-current Heltech BMS and active cell balancing.\u003c\/p\u003e\n\u003cp\u003eThe supplied product information describes LiFePO4 as suitable for demanding environments where safety, reliability and consistent electrical performance are important.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e📊 TECHNICAL SPECIFICATIONS\u003c\/h3\u003e\n\u003cp\u003eCapacity: 1120Ah\u003c\/p\u003e\n\u003cp\u003eNominal Voltage: 12.8V\u003c\/p\u003e\n\u003cp\u003eContinuous Discharge: 380A\u003c\/p\u003e\n\u003cp\u003eRecommended Charge Current: 130A\u003c\/p\u003e\n\u003cp\u003eCharge Voltage: 14.2–14.6V\u003c\/p\u003e\n\u003cp\u003eAbsorption \/ Float Voltage: 13.4–13.6V\u003c\/p\u003e\n\u003cp\u003eLow-Voltage Cut-Off: 10.5V\u003c\/p\u003e\n\u003cp\u003eOperating Temperature: 0°C to 60°C\u003c\/p\u003e\n\u003cp\u003eTerminals: M10\u003c\/p\u003e\n\u003cp\u003eBattery Dimensions: 803mm L × 487mm H × 163mm W as supplied\u003c\/p\u003e\n\u003cp\u003eOverall Dimensions: 830mm L × 487mm W × 163mm H as supplied\u003c\/p\u003e\n\u003cp\u003eWeight: Approx. 100kg\u003c\/p\u003e\n\u003cp\u003eBattery Chemistry: LiFePO4\u003c\/p\u003e\n\u003cp\u003eCells: Premium A-Grade Automotive LiFePO4\u003c\/p\u003e\n\u003cp\u003eBMS: Modified Heltech High-Current BMS\u003c\/p\u003e\n\u003cp\u003eCell Balancing: Active Balancer\u003c\/p\u003e\n\u003cp\u003eLow-Temperature Cut-Off: Yes, exact threshold not supplied\u003c\/p\u003e\n\u003cp\u003eEnclosure: Aluminium\u003c\/p\u003e\n\u003cp\u003eWarranty: 7 Years\u003c\/p\u003e\n\u003cp\u003eManufactured: Brisbane, Australia\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e⚡ 380A CONTINUOUS DISCHARGE\u003c\/h3\u003e\n\u003cp\u003eThe stated \u003cstrong\u003e380A continuous discharge capability\u003c\/strong\u003e provides substantial current availability for demanding auxiliary electrical systems.\u003c\/p\u003e\n\u003cp\u003eThis allows the Ultra Slim XL to form part of an appropriately engineered high-power inverter system, provided the inverter, DC cabling, fuse protection, terminals and complete installation are correctly designed.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e🔌 CHARGING REQUIREMENTS\u003c\/h3\u003e\n\u003cp\u003eThe supplied specification lists a recommended charge current of \u003cstrong\u003e130A\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRecommended Charge Current: 130A\u003c\/li\u003e\n\u003cli\u003eBulk \/ Charge Voltage: 14.2–14.6V\u003c\/li\u003e\n\u003cli\u003eAbsorption \/ Float Voltage: 13.4–13.6V\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCompatible lower-output charging equipment can also be used, but recharge times will increase accordingly.\u003c\/p\u003e\n\u003cp\u003eWith an 1120Ah battery bank, the overall charging strategy should be considered carefully. Depending on the application, this may involve a combination of DC-DC charging, solar and 240V mains charging.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #dd1d1d;\"\u003e⚠️ A battery of this capacity can require substantial recharge time. Charger output, available alternator capacity, solar array size, mains charging capability and typical daily energy consumption should all be considered when designing the complete system.\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e❄️ LOW-TEMPERATURE BMS PROTECTION\u003c\/h3\u003e\n\u003cp\u003eThe supplied product information states that the modified Heltech BMS incorporates \u003cstrong\u003elow-temperature cut-off protection\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThis provides additional battery protection where charging temperatures fall outside acceptable limits.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e\n\u003cspan style=\"color: rgb(128, 255, 0);\"\u003e🇦🇺\u003c\/span\u003e AUSTRALIAN MADE\u003c\/h3\u003e\n\u003cp\u003eCustom Lithium states that the Ultra Slim XL battery is \u003cstrong\u003eAustralian Made certified\u003c\/strong\u003e and manufactured in Brisbane.\u003c\/p\u003e\n\u003cp\u003eEach battery is individually bench tested before supply and backed by a 7-year manufacturer warranty.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e🛠️ INSTALLATION CONSIDERATIONS\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eApproximate battery weight: 100kg\u003c\/li\u003e\n\u003cli\u003eHard mounting directly to the vehicle or canopy floor is recommended\u003c\/li\u003e\n\u003cli\u003eBattery may be positioned flat or on one of its longer sides as specified by Custom Lithium\u003c\/li\u003e\n\u003cli\u003eInstallation structure must support the full battery mass\u003c\/li\u003e\n\u003cli\u003eAllow clearance for M10 terminals and heavy-current cabling\u003c\/li\u003e\n\u003cli\u003eCorrect cable sizing, fuse protection and isolation are essential\u003c\/li\u003e\n\u003cli\u003eProfessional installation by a qualified auto electrician is recommended\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2 style=\"color: #dd1d1d;\"\u003e❓ QUICK FAQ\u003c\/h2\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eHow much capacity does the Ultra Slim XL provide?\u003c\/h3\u003e\n\u003cp\u003eThe battery provides a stated \u003cstrong\u003e1120Ah at 12.8V nominal\u003c\/strong\u003e, making it one of the highest-capacity batteries in the Custom Lithium Ultra Slim range.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eHow should the 1120Ah battery be mounted?\u003c\/h3\u003e\n\u003cp\u003eCustom Lithium recommends hard mounting the battery directly to the vehicle or canopy floor, either flat on its broad face or supported on one of its longer sides in accordance with the manufacturer's installation guidance.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eCan this battery run a large inverter?\u003c\/h3\u003e\n\u003cp\u003eIt can form part of an appropriately engineered high-power inverter system. The supplied continuous discharge rating is 380A, so inverter selection must consider actual DC current demand, surge requirements, cabling, fuse protection and BMS limitations.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eDoes it have low-temperature protection?\u003c\/h3\u003e\n\u003cp\u003eYes. The supplied product information states that the modified Heltech BMS incorporates low-temperature cut-off protection. The exact temperature threshold has not been supplied.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eWhat charging profile should I use?\u003c\/h3\u003e\n\u003cp\u003eThe supplied specifications call for a \u003cstrong\u003e14.2–14.6V charge voltage\u003c\/strong\u003e and \u003cstrong\u003e13.4–13.6V absorption\/float voltage\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eWhat charge current is recommended?\u003c\/h3\u003e\n\u003cp\u003eThe supplied recommended charge current is \u003cstrong\u003e130A\u003c\/strong\u003e. Lower-output compatible charging equipment can also be used but will further increase recharge time.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2 style=\"color: #dd1d1d;\"\u003e🔋 1120AH OF SERIOUS OFF-GRID ENERGY STORAGE\u003c\/h2\u003e\n\u003cp\u003eWith 1120Ah of LiFePO4 capacity, 380A continuous discharge capability, a modified Heltech BMS, active cell balancing and a purpose-built aluminium enclosure, the Custom Lithium Next Generation Ultra Slim XL is designed for large electrical systems where long-term off-grid energy storage is the priority.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eExtreme capacity. Purpose-built protection. Australian made.\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/div\u003e","brand":"CUSTOM LITHIUM","offers":[{"title":"Default Title","offer_id":48172899107064,"sku":"CL-USV3-1120","price":10499.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/9230\/4632\/files\/Front_on_2_-_Edited.webp?v=1774935329","url":"https:\/\/www.homeof12volt.com.au\/products\/custom-lithium-ultra-slim-xl-1120ah-lifepo4-battery","provider":"Home of 12 Volt Northern","version":"1.0","type":"link"}