{"product_id":"aims-power-12v-400ah-lifepo4-auxiliary-battery-for-onboard-solar-generator-5-12kwh","title":"AIMS Power 12V 400Ah LiFePO4 Auxiliary Battery for Onboard Solar Generator | 5.12kWh","description":"\u003cdiv style=\"display: flex; flex-wrap: wrap; align-items: center; gap: 32px; margin: 0 0 40px;\"\u003e\n\u003cdiv style=\"flex: 2 1 320px; min-width: 0;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0643\/9128\/2937\/files\/front-of-the-aims-power-12v-400ah-auxiliary-battery-showing-can-and-rs485-ports-and-battery-expansion-port.jpg\" alt=\"Front of the AIMS Power 12V 400Ah auxiliary battery showing CAN and RS485 ports and battery expansion port\" width=\"1080\" height=\"451\" style=\"display: block; width: 100%; max-width: 1080px; height: auto; margin: 0 auto;\"\u003e\u003c\/div\u003e\n\u003cdiv style=\"flex: 3 1 320px; min-width: 0; text-wrap: pretty;\"\u003e\n\u003ch2 style=\"margin-top: 0;\"\u003eThe AIMS Power 12V 400Ah LiFePO4 Auxiliary Battery Adds 5.12kWh of Lithium Storage to Your Onboard Solar Generator or Large 12V System\u003c\/h2\u003e\n\u003cp\u003eThe AIMS Power 12V 400Ah LiFePO4 Auxiliary Battery stores 5.12kWh of rated energy in sixteen 3.1V 100Ah prismatic LiFePO4 cells arranged 4S4P. AIMS built it to expand the AIMS Power Onboard All-in-One Solar Generator (AIO-12V), and it can also work as a standalone 12V power source.\u003c\/p\u003e\n\u003cp\u003eIt's made for demanding off-grid systems, backup power installations and mobile energy platforms such as large RVs and mobile businesses. With 300A of continuous discharge, a built-in battery management system and CAN and RS485 communication ports, it gives installers and owners a large 12V bank that can grow.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cbr\u003e\n\u003ch3\u003eAIMS Power 12V 400Ah LiFePO4 Auxiliary Battery Features\u003c\/h3\u003e\n\u003ch4\u003e5.12kWh From Grade A Prismatic Cells\u003c\/h4\u003e\n\u003cp\u003eAIMS uses Grade A LiFePO4 prismatic cells rated 3.1V 100Ah, sixteen of them in a 4S4P configuration. That adds up to 400Ah and 5.12kWh of rated energy for stable storage and long operating life.\u003c\/p\u003e\n\u003ch4\u003eHigh Discharge for Heavy Loads\u003c\/h4\u003e\n\u003cp\u003eThe battery delivers 300A continuous discharge current, with 440A for 30 seconds and 480A for 5 seconds. That supports demanding DC loads and high-power inverter systems. The 300A discharge runs through an SB350 connector.\u003c\/p\u003e\n\u003ch4\u003eBuilt-In BMS With Cell Balancing\u003c\/h4\u003e\n\u003cp\u003eThe integrated battery management system protects against short circuits, overcharge, over-discharge and high and low voltage, with temperature protection and automatic cell balancing. AIMS lists the overcharge protection voltage at 14.6V.\u003c\/p\u003e\n\u003ch4\u003eStatus Lights and Communication Ports\u003c\/h4\u003e\n\u003cp\u003eThe front panel has an on\/off switch, battery state of charge lights for 25%, 50%, 75% and 100%, plus Alarm and On lights. CAN and RS485 ports let the BMS communicate with monitoring software, and AIMS lists a remote on\/off function.\u003c\/p\u003e\n\u003ch4\u003eParallel Expansion\u003c\/h4\u003e\n\u003cp\u003eAIMS rates the battery for parallel connection of up to 8 batteries, so you can grow storage for a large solar system or backup bank. A labeled battery expansion port on the front handles the connection.\u003c\/p\u003e\n\u003ch4\u003eLong Cycle Life\u003c\/h4\u003e\n\u003cp\u003eAIMS rates the battery for 3500 cycles at 80% depth of discharge and 6000 cycles at 60% depth of discharge, with no venting or gassing.\u003c\/p\u003e\n\u003cbr\u003e\n\u003ch3\u003eReal-World Applications\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eOnboard solar generator expansion.\u003c\/strong\u003e Add 5.12kWh of storage to an AIMS Power Onboard All-in-One Solar Generator through its battery expansion connection.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eLarge RVs and mobile businesses.\u003c\/strong\u003e Give a mobile power platform more stored energy for appliances, tools and equipment on the go.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eBackup power.\u003c\/strong\u003e Build a large 12V LiFePO4 bank for emergency backup and remote installations.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eStandalone 12V systems.\u003c\/strong\u003e Run the battery on its own to supply a high-power 12V inverter or large DC loads.\u003c\/p\u003e\n\u003cbr\u003e\n\u003ch3\u003ePractical Comparison\u003c\/h3\u003e\n\u003ch4\u003eLiFePO4 Auxiliary Battery Versus a Lead-Acid Bank\u003c\/h4\u003e\n\u003cp\u003eCompared with building a bank from lead-acid batteries, this battery puts 5.12kWh in one LiFePO4 unit with a built-in BMS, automatic cell balancing, virtually no maintenance and no venting or gassing.\u003c\/p\u003e\n\u003ch4\u003eOne Battery Versus a Parallel Bank\u003c\/h4\u003e\n\u003cp\u003eOne auxiliary battery adds 5.12kWh. Paralleling more batteries adds capacity for larger systems. With several batteries, AIMS has you turn the power switches on one at a time, and off one at a time after the inverter is off.\u003c\/p\u003e\n\u003cbr\u003e\n\u003ch3\u003eBuyer Guidance\u003c\/h3\u003e\n\u003ch4\u003ePlan the Connection\u003c\/h4\u003e\n\u003cp\u003eFor the add-on battery, AIMS recommends a battery-to-battery SB350 grey 4\/0 AWG cable, which is not included. Connect the battery expansion SB350 to the expansion battery first, then to the AIO-12V. At start-up, turn on the main battery first, then the expansion battery. If you're adding more than one battery to an Onboard Solar Generator, check your plan with our team before you order.\u003c\/p\u003e\n\u003ch4\u003eChoose the Location\u003c\/h4\u003e\n\u003cp\u003eAIMS lists the auxiliary battery at 125 lbs and rates it IP21. Store and operate it indoors in a cool, dry, well-ventilated area on a flat surface, away from extreme weather, and don't install it upside down. Frequent exposure to harsh temperatures may shorten battery life.\u003c\/p\u003e\n\u003ch4\u003eThis May Be A Good Fit If\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eYou own or plan an AIMS Power Onboard Solar Generator\u003c\/li\u003e\n\u003cli\u003eYou need 300A continuous from a 12V bank\u003c\/li\u003e\n\u003cli\u003eYou want CAN and RS485 battery communication\u003c\/li\u003e\n\u003cli\u003eYou can install the battery indoors on a flat surface\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\n\u003ch3\u003eCommon Questions\u003c\/h3\u003e\n\u003ch4\u003eCan I Use It Without the Onboard Solar Generator?\u003c\/h4\u003e\n\u003cp\u003eYes. AIMS says the battery can operate as a standalone 12V power source or expand the Onboard All-in-One Solar Generator.\u003c\/p\u003e\n\u003ch4\u003eWhat Are the Charge Settings?\u003c\/h4\u003e\n\u003cp\u003eAIMS lists a max charge voltage of 14.2V, overcharge protection at 14.6V and a charge current of 200A.\u003c\/p\u003e\n\u003ch4\u003eWhat Temperatures Can It Handle?\u003c\/h4\u003e\n\u003cp\u003eIt discharges from -20°C to 65°C (-4°F to 149°F). Charging starts at 0°C (32°F), so don't charge it below freezing.\u003c\/p\u003e\n\u003ch4\u003eAre Cables Included?\u003c\/h4\u003e\n\u003cp\u003eAIMS lists the recommended SB350 grey 4\/0 AWG battery cables as not included. Our team can help you choose the right cables.\u003c\/p\u003e\n\u003cbr\u003e\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x AIMS Power 12V 400Ah LiFePO4 Auxiliary Battery\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cbr\u003e\n\u003ch3\u003eLarge 12V Storage You Can Build On\u003c\/h3\u003e\n\u003cp\u003eThe AIMS Power 12V 400Ah LiFePO4 Auxiliary Battery pairs 5.12kWh of prismatic LiFePO4 storage with 300A continuous discharge, a built-in BMS and CAN and RS485 communication. If you'd like help planning your connection or sizing a battery bank, the Outbound Power team is happy to help.\u003c\/p\u003e\n\u003cbr\u003e\n\u003ctable style=\"border-collapse: collapse; max-width: 100%; overflow-x: auto;\" cellspacing=\"0\" cellpadding=\"8\" border=\"1\"\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth colspan=\"2\" style=\"background-color: rgb(242, 242, 242); text-align: left; width: 100%;\"\u003e\n\u003ch3\u003eAIMS Power 12V 400Ah LiFePO4 Auxiliary Battery for Onboard Solar Generator | 5.12kWh Specifications\u003c\/h3\u003e\n\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\" style=\"background-color: rgb(242, 242, 242);\"\u003e\u003cstrong\u003eElectrical\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 44.1489%;\"\u003e\u003cstrong\u003eNominal Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 55.8511%;\"\u003e12V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCapacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e400Ah\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRated Energy\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5.12kWh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChemistry\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLiFePO4, Grade A prismatic cells\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCells\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e16 x 3.1V 100Ah prismatic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCell Configuration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4S4P\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\" style=\"background-color: rgb(242, 242, 242);\"\u003e\u003cstrong\u003eCharge and Discharge\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eContinuous Discharge Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e300A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePeak Discharge Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e440A for 30 sec, 480A for 5 sec\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax Charge Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e14.2V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOvercharge Protection Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e14.6V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCharge Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e200A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCycle Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3500 cycles at 80% DoD, 6000 cycles at 60% DoD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eParallel Connection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 8 batteries\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\" style=\"background-color: rgb(242, 242, 242);\"\u003e\u003cstrong\u003eTemperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDischarge Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-20°C to 65°C (-4°F to 149°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCharge Temperature (Low Limit)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0°C (32°F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\" style=\"background-color: rgb(242, 242, 242);\"\u003e\u003cstrong\u003eBMS and Monitoring\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBMS\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBuilt-in, with automatic cell balancing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProtections\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eShort circuit, overcharge, over-discharge, high and low voltage shutdown, temperature\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCommunication Ports\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCAN and RS485\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIndicators\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eState of charge LEDs (25%, 50%, 75%, 100%), Alarm and On\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eControls\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePower switch and remote on\/off\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\" style=\"background-color: rgb(242, 242, 242);\"\u003e\u003cstrong\u003ePhysical\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBattery Connection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSB350 connector (battery expansion port)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRecommended Cable\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSB350 grey 4\/0 AWG battery to battery (not included)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e26 x 32 x 14 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e125 lbs (163 lbs shipped)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIP Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIP21\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInstallation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIndoors, on a flat surface, not upside down\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOther\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRoHS compliant, no venting or gassing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\" style=\"background-color: rgb(242, 242, 242);\"\u003e\u003cstrong\u003eCompatibility\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eExpands\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAIMS Power Onboard All-in-One Solar Generator (AIO-12V)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStandalone Use\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eYes, as a 12V power source\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cbr\u003e\n\u003ch3\u003eAIMS Power 12V 400Ah LiFePO4 Auxiliary Battery for Onboard Solar Generator | 5.12kWh Manual\u003c\/h3\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0643\/9128\/2937\/files\/aims-power-aio-12v-09252025.pdf\" title=\"AIMS Power 12V 400Ah LiFePO4 Auxiliary Battery for Onboard Solar Generator | 5.12kWh Manual\" rel=\"noopener\" target=\"_blank\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0643\/9128\/2937\/files\/aims-power-12v-400ah-lifepo4-auxiliary-battery-for-onboard-solar-generator-5.12kwh-manual.jpg\" alt=\"AIMS Power 12V 400Ah LiFePO4 Auxiliary Battery for Onboard Solar Generator | 5.12kWh Manual\" width=\"100\" height=\"100\" style=\"margin-bottom: 16px; float: none;\"\u003e\u003c\/a\u003e\u003c\/div\u003e","brand":"AIMS Power","offers":[{"title":"Default Title","offer_id":67662583857401,"sku":"AIO-12V-BAT2","price":2350.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0643\/9128\/2937\/files\/aims-power-12v-400ah-lifepo4-auxiliary-battery-front-panel-with-sb-connectors-switch-and-charge-lights.jpg?v=1794357901","url":"https:\/\/outboundpower.com\/products\/aims-power-12v-400ah-lifepo4-auxiliary-battery-for-onboard-solar-generator-5-12kwh","provider":"Outbound Power","version":"1.0","type":"link"}