{"product_id":"lion-energy-ut-3500-htr-280ah-battery","title":"Lion Energy UT 3500 HTR 280Ah Battery","description":"\u003ch2\u003eLion Energy UT 3500 HTR – 280Ah Heated LiFePO4 Auxiliary Battery\u003c\/h2\u003e\n\u003cp\u003eThe Lion Energy UT 3500 HTR is a high-capacity 12V lithium iron phosphate battery built for auxiliary power, RV energy systems, solar storage, off-grid battery banks, cabins, and backup power applications. With 280Ah \/ 3,584Wh capacity and a 12.8V nominal rating, it provides substantial stored energy in a single-battery footprint. The UT 3500 HTR uses LiFePO4 battery chemistry for long cycle life and deep-cycle energy storage performance. Built-in Bluetooth® monitoring allows users to check battery status from a compatible device, while the integrated heater supports cold-weather charging conditions. This battery is designed for properly configured auxiliary power systems and should not be treated as a general-purpose starter battery.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e280Ah LiFePO4 Capacity for Larger Power Systems\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe UT 3500 HTR provides 280Ah \/ 3,584Wh of energy storage for supported RV, solar, off-grid, cabin, and backup power systems. Its higher capacity helps reduce the need for multiple smaller batteries when a properly sized single-battery setup is preferred.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eBuilt-In Heater for Cold-Weather Charging Support\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe integrated heater helps support battery charging in colder environments when the system is configured correctly. This makes the UT 3500 HTR a practical option for users who need lithium battery storage in seasonal, mobile, or off-grid applications where temperatures may drop.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eBluetooth® Monitoring from a Compatible Device\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eBluetooth® monitoring allows users to check battery status, charge level, and system information from a compatible mobile device. This helps simplify visibility for RV systems, solar battery banks, and auxiliary power setups.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eHigh-Output Auxiliary Power Performance\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe UT 3500 HTR supports 150A continuous discharge and 280A peak discharge for up to 50 seconds. It also includes a 10.5V low-voltage safety shutoff and LED indicators that show remaining charge level from 10% to 100%.\u003c\/p\u003e\n\u003c!-- Responsive Image\/Text Blocks --\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; align-items: center; justify-content: center; padding: 0;\"\u003e\n\u003cdiv class=\"responsive-half\" style=\"flex: 1 1 300px; max-width: 50%; padding: 0 4px;\"\u003e\u003cimg height=\"1000\" width=\"1000\" alt=\"Lion Energy UT 3500 HTR 280Ah heated LiFePO4 auxiliary battery with Bluetooth monitoring\" class=\"responsive-image\" style=\"width: 100%; height: auto;\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0761\/5781\/2888\/files\/ut-3500-front-top.webp?v=1778885941\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"responsive-half\" style=\"flex: 1 1 300px; max-width: 50%; padding: 1rem; text-align: center;\"\u003e\n\u003cp\u003eThe Lion Energy UT 3500 HTR is built for users who need more stored energy from a 12V lithium battery system. Its 280Ah capacity, Bluetooth® monitoring, and heated battery design make it a strong fit for properly configured RV, solar, cabin, and off-grid power setups.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Image Block 2 --\u003e\n\u003cdiv style=\"display: flex; flex-wrap: wrap; align-items: center; justify-content: center; padding: 0;\" class=\"image-block-2\"\u003e\n\u003cdiv class=\"responsive-half\" style=\"flex: 1 1 300px; max-width: 50%; padding: 1rem; text-align: center;\"\u003e\n\u003cp\u003eThis heated LiFePO4 battery should be matched with compatible charging equipment, wiring, fusing, and system design. Confirm your application requirements before using it in an RV, solar battery bank, auxiliary power system, or backup energy setup.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"responsive-half\" style=\"flex: 1 1 300px; max-width: 50%; padding: 0 4px;\"\u003e\u003cimg height=\"1000\" width=\"1000\" alt=\"Lion UT 3500 HTR 12V 280Ah lithium iron phosphate battery for RV solar and off-grid auxiliary power\" class=\"responsive-image\" style=\"width: 100%; height: auto;\" loading=\"lazy\" decoding=\"async\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0761\/5781\/2888\/files\/ut-3500-front-right.webp?v=1778885941\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c!-- Mobile Stack Fix --\u003e\n\u003cstyle\u003e\n@media(max-width:768px) {\n  .responsive-half { max-width: 100% !important; flex: 1 1 100% !important; }\n  .responsive-image { width: 100% !important; height: auto !important; }\n  .image-block-2 { flex-direction: column-reverse !important; }\n}\n\u003c\/style\u003e\n\u003ch3\u003eLion Energy UT 3500 HTR Features \u0026amp; Benefits\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e280Ah \/ 3,584Wh capacity:\u003c\/strong\u003e Provides high-capacity lithium energy storage for compatible auxiliary power, RV, solar, and off-grid systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e12.8V nominal LiFePO4 battery:\u003c\/strong\u003e Uses lithium iron phosphate chemistry for deep-cycle energy storage applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt-in heater:\u003c\/strong\u003e Supports cold-weather charging conditions when the battery system is configured correctly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBluetooth® monitoring:\u003c\/strong\u003e Allows users to monitor battery status from a compatible device.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e150A continuous discharge:\u003c\/strong\u003e Supports demanding auxiliary power applications within the battery’s rated output limits.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e280A peak discharge:\u003c\/strong\u003e Provides short-duration peak discharge support for up to 50 seconds within the battery’s rating.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLED charge indicators:\u003c\/strong\u003e Shows remaining battery level from 10% to 100% for quick status checks.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"background: #EFE9DC; border: 1px solid #D6D0C4; border-radius: 8px; padding: 24px; text-align: center; margin: 2rem 0; color: #1f1f1f;\"\u003e\n\u003cp style=\"margin: 0 0 8px 0;\"\u003e\u003cstrong\u003eNeed help choosing the right high-capacity lithium battery setup?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 14px 0;\"\u003eContact TrueStead Supply for help comparing Lion Energy batteries, solar storage systems, RV power setups, and compatible charging accessories.\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 14px 0;\"\u003e✔ Lithium battery guidance    ✔ Solar storage support    ✔ RV and off-grid power options\u003c\/p\u003e\n\u003ca style=\"display: inline-block; padding: 0.75rem 1.5rem; background-color: #2f4f2f; color: #ffffff; text-decoration: none; font-weight: bold; border-radius: 6px;\" href=\"https:\/\/truesteadsupply.com\/pages\/contact-us\"\u003eContact Us for a Quote\u003c\/a\u003e\n\u003c\/div\u003e\n\u003ch3\u003eLion Energy UT 3500 HTR Specifications\u003c\/h3\u003e\n\u003ctable style=\"width: 100%; border-collapse: collapse; margin-bottom: 2rem; border: 1px solid #D6D0C4;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #D6D0C4; padding: 8px;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #D6D0C4; padding: 8px;\"\u003eLion Energy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #D6D0C4; padding: 8px;\"\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #D6D0C4; padding: 8px;\"\u003eUT 3500 HTR \/ UT 3500 BT-H\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #D6D0C4; padding: 8px;\"\u003e\u003cstrong\u003eSKU \/ Item Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #D6D0C4; padding: 8px;\"\u003e50170186\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #D6D0C4; padding: 8px;\"\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #D6D0C4; padding: 8px;\"\u003e12V Heated LiFePO4 Auxiliary Battery\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #D6D0C4; padding: 8px;\"\u003e\u003cstrong\u003eBattery Chemistry\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #D6D0C4; padding: 8px;\"\u003eLithium Iron Phosphate (LiFePO4)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #D6D0C4; padding: 8px;\"\u003e\u003cstrong\u003eNominal Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #D6D0C4; padding: 8px;\"\u003e12.8V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #D6D0C4; padding: 8px;\"\u003e\u003cstrong\u003eBattery Capacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #D6D0C4; padding: 8px;\"\u003e280Ah \/ 3,584Wh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #D6D0C4; padding: 8px;\"\u003e\u003cstrong\u003eContinuous Discharge\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #D6D0C4; padding: 8px;\"\u003e150A continuous output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #D6D0C4; padding: 8px;\"\u003e\u003cstrong\u003ePeak Discharge\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #D6D0C4; padding: 8px;\"\u003e280A peak discharge for up to 50 seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #D6D0C4; padding: 8px;\"\u003e\u003cstrong\u003eLow-Voltage Safety Shutoff\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #D6D0C4; padding: 8px;\"\u003e10.5V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #D6D0C4; padding: 8px;\"\u003e\u003cstrong\u003eBuilt-In Heater\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #D6D0C4; padding: 8px;\"\u003eIncluded for cold-weather charging support\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #D6D0C4; padding: 8px;\"\u003e\u003cstrong\u003eBluetooth® Monitoring\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #D6D0C4; padding: 8px;\"\u003eMonitor battery status from a compatible mobile device or web app\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #D6D0C4; padding: 8px;\"\u003e\u003cstrong\u003eLED Indicators\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #D6D0C4; padding: 8px;\"\u003eShows battery level from 10% to 100%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #D6D0C4; padding: 8px;\"\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #D6D0C4; padding: 8px;\"\u003e13.85\" × 7.64\" × 12.85\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border: 1px solid #D6D0C4; padding: 8px;\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border: 1px solid #D6D0C4; padding: 8px;\"\u003e72.31 lbs.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch4\u003eLion Energy UT 3500 HTR Info\u003c\/h4\u003e","brand":"Lion Energy","offers":[{"title":"Default Title","offer_id":49114317488280,"sku":"50170186","price":1499.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0761\/5781\/2888\/files\/ut-3500-front.webp?v=1778885941","url":"https:\/\/www.truesteadsupply.com\/products\/lion-energy-ut-3500-htr-280ah-battery","provider":"TrueStead Supply","version":"1.0","type":"link"}