{"title":"Limitless Lithium Retro Series LiFePO4 Batteries","description":"\u003ch1\u003eLimitless Lithium Retro Series LiFePO4 Batteries\u003c\/h1\u003e\n\n\u003cp\u003e\u003cstrong\u003eSold by AudioSellerz.com\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eShop \u003cstrong\u003eLimitless Lithium Retro Series LiFePO4 batteries\u003c\/strong\u003e for high-power car audio electrical systems at AudioSellerz.com. The current Retro lineup is centered around the \u003cstrong\u003eLimitless Lithium Retro Pro 56\u003c\/strong\u003e, a 12-volt 56Ah lithium iron phosphate battery built for systems that need serious reserve and high-current electrical support.\u003c\/p\u003e\n\n\u003cp\u003eThe Retro Pro 56 is available by itself or paired with a compatible \u003cstrong\u003e3.5A battery maintainer\u003c\/strong\u003e, giving builders the option to purchase the battery alone or get the charging-maintenance equipment at the same time.\u003c\/p\u003e\n\n\u003cp\u003eYou can also \u003ca href=\"https:\/\/audiosellerz.com\/collections\/limitless-lithium\" style=\"color:#0066cc;text-decoration:underline;\"\u003eshop all Limitless Lithium products at AudioSellerz\u003c\/a\u003e or compare additional battery options in our \u003ca href=\"https:\/\/audiosellerz.com\/collections\/lithium\" style=\"color:#0066cc;text-decoration:underline;\"\u003elithium car audio battery collection\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eWhat Is the Limitless Lithium Retro Series?\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eLimitless Lithium Retro Series\u003c\/strong\u003e is a LiFePO4 battery lineup designed for demanding 12-volt electrical systems. The current Retro Series offering from Limitless Lithium is the \u003cstrong\u003eRetro Pro 56\u003c\/strong\u003e, a 56Ah battery in a BCI Group 24 case.\u003c\/p\u003e\n\n\u003cp\u003eThis makes the Retro Pro 56 a serious option for car audio builders who want substantial lithium battery capacity while staying within a more traditional automotive-style battery case.\u003c\/p\u003e\n\n\u003cp\u003eThe Retro Pro 56 can make sense for:\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eHigh-power daily-driver car audio systems\u003c\/li\u003e\n  \u003cli\u003eLarge monoblock amplifier setups\u003c\/li\u003e\n  \u003cli\u003eMultiple amplifier systems\u003c\/li\u003e\n  \u003cli\u003eDemo vehicles\u003c\/li\u003e\n  \u003cli\u003eCompetition-oriented audio builds\u003c\/li\u003e\n  \u003cli\u003eSystems needing additional reserve capacity\u003c\/li\u003e\n  \u003cli\u003eVehicles already using upgraded charging systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eLimitless Lithium Retro Pro 56 Specifications\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eLimitless Lithium Retro Pro 56\u003c\/strong\u003e is a 12V LiFePO4 battery with 56Ah of actual capacity. Limitless lists the battery with the following specifications:\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 12V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCapacity:\u003c\/strong\u003e 56Ah\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChemistry:\u003c\/strong\u003e LiFePO4 lithium iron phosphate\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eResting voltage:\u003c\/strong\u003e approximately 13.1V to 13.4V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBCI case size:\u003c\/strong\u003e Group 24\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e approximately 21 lb\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e approximately 8.75 inches high x 6.5 inches deep x 10.125 inches wide\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTerminal size:\u003c\/strong\u003e M8 x 1.25\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTerminal orientation:\u003c\/strong\u003e positive left\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInternal balance board:\u003c\/strong\u003e yes\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBMS:\u003c\/strong\u003e no\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum charging voltage:\u003c\/strong\u003e 14.8V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum listed input charging current:\u003c\/strong\u003e 400A\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eContinuous discharge current:\u003c\/strong\u003e 750A\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eListed burst discharge:\u003c\/strong\u003e 1,200 to 1,300A depending on temperature\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eListed cycle life:\u003c\/strong\u003e 2,000 cycles at 80% depth of discharge\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eAlways verify current manufacturer specifications before installation, especially when designing a higher-current charging system.\u003c\/p\u003e\n\n\u003ch2\u003eHow Much Car Audio Power Can the Retro Pro 56 Support?\u003c\/h2\u003e\n\n\u003cp\u003eLimitless lists the Retro Pro 56 with a \u003cstrong\u003e9,000 to 13,000 watt continuous range depending on alternator size\u003c\/strong\u003e, with a listed burst rating up to 16,000 watts.\u003c\/p\u003e\n\n\u003cp\u003eThe important part of that specification is \u003cstrong\u003edepending on alternator size\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003cp\u003eA battery does not create electrical power by itself. It stores energy and supplies current when the system demands it. The alternator still has to replenish that energy while the vehicle is running.\u003c\/p\u003e\n\n\u003cp\u003eActual electrical-system capability depends on the complete build, including:\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eAlternator output\u003c\/li\u003e\n  \u003cli\u003eCharging voltage\u003c\/li\u003e\n  \u003cli\u003eAmplifier efficiency\u003c\/li\u003e\n  \u003cli\u003eActual amplifier RMS demand\u003c\/li\u003e\n  \u003cli\u003ePower and ground wire size\u003c\/li\u003e\n  \u003cli\u003eBig 3 wiring\u003c\/li\u003e\n  \u003cli\u003eFuse and distribution setup\u003c\/li\u003e\n  \u003cli\u003eBattery placement\u003c\/li\u003e\n  \u003cli\u003eVoltage drop\u003c\/li\u003e\n  \u003cli\u003eHow long and how hard the system is played\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eDo not choose a battery only because the manufacturer's wattage number is higher than the amplifier rating. The entire electrical system has to support the power goal.\u003c\/p\u003e\n\n\u003ch2\u003eRetro Pro 56 for High-Power Car Audio\u003c\/h2\u003e\n\n\u003cp\u003eLarge car audio amplifiers can demand huge amounts of current during bass-heavy music. Once a system moves beyond basic stock electrical support, the battery and charging system become critical parts of the build.\u003c\/p\u003e\n\n\u003cp\u003eA properly matched Retro Pro 56 can help provide reserve and current support for systems using:\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eHigh-output monoblock amplifiers\u003c\/li\u003e\n  \u003cli\u003eLarge subwoofer systems\u003c\/li\u003e\n  \u003cli\u003eMultiple amplifier configurations\u003c\/li\u003e\n  \u003cli\u003eHigh-power daily-driver systems\u003c\/li\u003e\n  \u003cli\u003eDemo builds\u003c\/li\u003e\n  \u003cli\u003eCompetition-style electrical systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eAdding battery capacity can help support voltage during demanding musical peaks, but it does not replace adequate alternator output.\u003c\/p\u003e\n\n\u003ch2\u003eRetro Pro 56 Charging Voltage\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eCharging voltage matters with LiFePO4 batteries.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eLimitless currently lists a \u003cstrong\u003e14.8V maximum charging voltage\u003c\/strong\u003e for the Retro Pro 56. That is a maximum specification—not an instruction to automatically change every vehicle to 14.8 volts.\u003c\/p\u003e\n\n\u003cp\u003eBefore installing the Retro Pro 56, verify:\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eNormal vehicle charging voltage\u003c\/li\u003e\n  \u003cli\u003eAlternator output\u003c\/li\u003e\n  \u003cli\u003eVoltage-regulator behavior\u003c\/li\u003e\n  \u003cli\u003eBattery cable size\u003c\/li\u003e\n  \u003cli\u003eGrounding\u003c\/li\u003e\n  \u003cli\u003eFuse protection\u003c\/li\u003e\n  \u003cli\u003eAmplifier current demand\u003c\/li\u003e\n  \u003cli\u003eCompatibility of other vehicle electronics\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eNever increase charging voltage without confirming that every battery and electrical component connected to the system can safely operate at that voltage.\u003c\/p\u003e\n\n\u003ch2\u003eInternal Balance Board vs BMS\u003c\/h2\u003e\n\n\u003cp\u003eOne specification worth understanding on the Retro Pro 56 is that Limitless lists an \u003cstrong\u003einternal balance board but no battery management system, or BMS\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003cp\u003eA balance board helps keep the individual cells balanced with one another, but it should not be confused with a full BMS that may provide additional electronic protection against certain high-voltage, low-voltage, temperature, or short-circuit conditions.\u003c\/p\u003e\n\n\u003cp\u003eThat means proper electrical-system setup is especially important.\u003c\/p\u003e\n\n\u003cp\u003eWith the Retro Pro 56, pay close attention to:\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eCharging voltage\u003c\/li\u003e\n  \u003cli\u003eAlternator regulation\u003c\/li\u003e\n  \u003cli\u003eBattery state of charge\u003c\/li\u003e\n  \u003cli\u003ePower and ground connections\u003c\/li\u003e\n  \u003cli\u003eWire sizing\u003c\/li\u003e\n  \u003cli\u003eFuse protection\u003c\/li\u003e\n  \u003cli\u003eSystem voltage while playing\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRetro Pro 56 With 3.5A Battery Maintainer\u003c\/h2\u003e\n\n\u003cp\u003eAudioSellerz also carries the \u003cstrong\u003eLimitless Lithium Retro Pro 56 with a 3.5A battery maintainer\u003c\/strong\u003e.\u003c\/p\u003e\n\n\u003cp\u003eThis package includes the same 56Ah Retro Pro battery along with the compatible stock-voltage Limitless maintainer.\u003c\/p\u003e\n\n\u003cp\u003eA battery maintainer can be particularly useful for:\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eVehicles that sit for extended periods\u003c\/li\u003e\n  \u003cli\u003eDemo vehicles\u003c\/li\u003e\n  \u003cli\u003eSeasonal builds\u003c\/li\u003e\n  \u003cli\u003eShow cars\u003c\/li\u003e\n  \u003cli\u003eVehicles with small parasitic electrical draws\u003c\/li\u003e\n  \u003cli\u003eCustomers who want an easy way to maintain battery charge between uses\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eAlways use charging and maintenance equipment that matches the battery chemistry and voltage requirements. Do not assume every charger labeled for a 12-volt battery is appropriate for LiFePO4.\u003c\/p\u003e\n\n\u003ch2\u003eDo I Need a High Output Alternator With a Retro Pro 56?\u003c\/h2\u003e\n\n\u003cp\u003eThat depends on how much current the audio system demands.\u003c\/p\u003e\n\n\u003cp\u003eA battery can provide reserve energy, but the alternator is responsible for producing electrical power while the engine is running and replacing the energy removed from the battery.\u003c\/p\u003e\n\n\u003cp\u003eA high-output alternator becomes increasingly important when:\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eYou are running several thousand watts of amplifier power\u003c\/li\u003e\n  \u003cli\u003eVoltage drops significantly during music\u003c\/li\u003e\n  \u003cli\u003eThe battery does not recover while driving\u003c\/li\u003e\n  \u003cli\u003eYou play the system hard for long periods\u003c\/li\u003e\n  \u003cli\u003eMultiple amplifiers are installed\u003c\/li\u003e\n  \u003cli\u003eThe vehicle is being built for demos or competition\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLimitless itself ties the Retro Pro 56's power capability to alternator size, which is exactly why the battery and alternator should be planned as a system rather than as separate upgrades.\u003c\/p\u003e\n\n\u003ch2\u003eUpgrade the Big 3 With a Lithium Battery\u003c\/h2\u003e\n\n\u003cp\u003eInstalling a serious lithium battery while relying on small factory charging and grounding cables can create an unnecessary bottleneck.\u003c\/p\u003e\n\n\u003cp\u003eThe Big 3 upgrade strengthens three major electrical paths:\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eAlternator positive to battery positive\u003c\/li\u003e\n  \u003cli\u003eBattery negative to chassis\u003c\/li\u003e\n  \u003cli\u003eEngine block to chassis\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eIf you are upgrading to the Retro Pro 56, browse our \u003ca href=\"https:\/\/audiosellerz.com\/collections\/big-3-kits\" style=\"color:#0066cc;text-decoration:underline;\"\u003eBig 3 upgrade kits for car audio\u003c\/a\u003e to strengthen the charging and grounding foundation of the system.\u003c\/p\u003e\n\n\u003ch2\u003eUse Proper Power and Ground Wire\u003c\/h2\u003e\n\n\u003cp\u003eHigh-current batteries and amplifiers need wiring capable of safely carrying the current being demanded.\u003c\/p\u003e\n\n\u003cp\u003eUndersized wire, weak grounds, loose terminals, poor crimp connections, and insufficient fuse protection can cause:\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eVoltage drop\u003c\/li\u003e\n  \u003cli\u003eExcessive heat\u003c\/li\u003e\n  \u003cli\u003eAmplifier protect mode\u003c\/li\u003e\n  \u003cli\u003eWeak charging performance\u003c\/li\u003e\n  \u003cli\u003eInconsistent amplifier output\u003c\/li\u003e\n  \u003cli\u003eElectrical-system damage\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eBrowse \u003ca href=\"https:\/\/audiosellerz.com\/collections\/wire\" style=\"color:#0066cc;text-decoration:underline;\"\u003ecar audio power wire, ground wire, speaker wire, amp kits, and installation wiring\u003c\/a\u003e when planning the rest of the electrical system.\u003c\/p\u003e\n\n\u003ch2\u003eLiFePO4 Battery vs AGM for Car Audio\u003c\/h2\u003e\n\n\u003cp\u003eBuilders often consider LiFePO4 when a traditional AGM battery setup becomes too heavy, takes up too much space, or does not provide the reserve and current delivery needed for the power goal.\u003c\/p\u003e\n\n\u003cp\u003eA properly selected LiFePO4 car audio battery can offer:\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eHigh current capability\u003c\/li\u003e\n  \u003cli\u003eStrong usable reserve\u003c\/li\u003e\n  \u003cli\u003eLower weight than many large AGM arrangements\u003c\/li\u003e\n  \u003cli\u003eGood voltage support when properly charged\u003c\/li\u003e\n  \u003cli\u003eFast recovery when paired with adequate charging support\u003c\/li\u003e\n  \u003cli\u003eA compact way to support larger amplifier systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eHowever, lithium is not automatically better for every vehicle. Charging compatibility, alternator output, installation quality, system size, and intended use still determine whether it is the right upgrade.\u003c\/p\u003e\n\n\u003cp\u003eFor more help deciding whether lithium makes sense for your system, read our \u003ca href=\"https:\/\/audiosellerz.com\/blogs\/audio-sellerz-blogs\/do-you-need-lithium-for-car-audio\" style=\"color:#0066cc;text-decoration:underline;\"\u003eDo You Need Lithium for Car Audio? battery upgrade guide\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch2\u003eHow Do I Know If the Retro Pro 56 Is Right for My Build?\u003c\/h2\u003e\n\n\u003cp\u003eThe Retro Pro 56 is worth considering when your electrical system has moved beyond a simple stock-battery setup and you need substantial reserve for a larger car audio system.\u003c\/p\u003e\n\n\u003cp\u003eBefore ordering, consider:\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eYour amplifier's actual RMS power\u003c\/li\u003e\n  \u003cli\u003eAlternator amperage\u003c\/li\u003e\n  \u003cli\u003eCharging voltage\u003c\/li\u003e\n  \u003cli\u003eExisting battery setup\u003c\/li\u003e\n  \u003cli\u003eAvailable battery space\u003c\/li\u003e\n  \u003cli\u003ePower and ground wire size\u003c\/li\u003e\n  \u003cli\u003eHow long the system will be played at high output\u003c\/li\u003e\n  \u003cli\u003eWhether the vehicle is a daily driver, demo build, or competition vehicle\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eIf you are unsure, contact AudioSellerz with the vehicle, amplifiers, alternator size, charging voltage, and current battery setup. We would rather help you plan the electrical system correctly than have you guess from a wattage rating.\u003c\/p\u003e\n\n\u003ch2\u003eWhy Buy Limitless Lithium Retro Pro Batteries From AudioSellerz?\u003c\/h2\u003e\n\n\u003cp\u003eAudio Sellerz works with real high-power car audio systems. We understand amplifiers, batteries, high-output alternators, wiring, grounding, fuse protection, voltage drop, and the electrical upgrades required when a system starts making serious power.\u003c\/p\u003e\n\n\u003cp\u003eWhen you buy Limitless Lithium from AudioSellerz, you can shop the rest of the electrical system in one place and get help matching the components to the actual build.\u003c\/p\u003e\n\n\u003cp\u003eAudioSellerz carries:\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eLimitless Lithium batteries\u003c\/li\u003e\n  \u003cli\u003eLiFePO4 batteries\u003c\/li\u003e\n  \u003cli\u003eSodium-ion battery options\u003c\/li\u003e\n  \u003cli\u003eHigh-output alternators\u003c\/li\u003e\n  \u003cli\u003eBig 3 kits\u003c\/li\u003e\n  \u003cli\u003ePower and ground wire\u003c\/li\u003e\n  \u003cli\u003eFuse holders and electrical accessories\u003c\/li\u003e\n  \u003cli\u003eAmplifiers\u003c\/li\u003e\n  \u003cli\u003eSubwoofers\u003c\/li\u003e\n  \u003cli\u003eComplete car audio system components\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eBrowse the complete \u003ca href=\"https:\/\/audiosellerz.com\/collections\/limitless-lithium\" style=\"color:#0066cc;text-decoration:underline;\"\u003eLimitless Lithium collection at AudioSellerz\u003c\/a\u003e to compare the Retro Pro Series with Nano, NoLi, Shake Awake, chargers, maintainers, terminals, and other Limitless electrical products.\u003c\/p\u003e\n\n\u003ch2\u003eShop Limitless Lithium Retro Pro 56 Batteries\u003c\/h2\u003e\n\n\u003cp\u003eIf your car audio system needs serious lithium battery capacity, the \u003cstrong\u003eLimitless Lithium Retro Pro 56\u003c\/strong\u003e gives you 56Ah of LiFePO4 capacity in a Group 24-style battery package designed for high-current electrical systems.\u003c\/p\u003e\n\n\u003cp\u003eChoose the Retro Pro 56 by itself or select the package with the compatible 3.5A battery maintainer depending on how you plan to use and maintain the vehicle.\u003c\/p\u003e\n\n\u003cp\u003eShop the available Limitless Lithium Retro Series products above and build the battery, alternator, wiring, and amplifier system together instead of treating each part as a separate upgrade.\u003c\/p\u003e\n\n\u003ch2\u003eFollow Audio Sellerz\u003c\/h2\u003e\n\n\u003cp\u003eStay connected with Audio Sellerz for lithium battery information, high-output car audio builds, electrical upgrades, amplifier installs, product releases, demos, troubleshooting tips, and new videos.\u003c\/p\u003e\n\n\u003cp\u003e\n\u003ca href=\"https:\/\/www.facebook.com\/Audiosellerz\/\" style=\"color:#0066cc;text-decoration:underline;\"\u003eFollow Audio Sellerz on Facebook\u003c\/a\u003e\u003cbr\u003e\n\u003ca href=\"https:\/\/www.instagram.com\/audiosellerz\/\" style=\"color:#0066cc;text-decoration:underline;\"\u003eFollow Audio Sellerz on Instagram\u003c\/a\u003e\u003cbr\u003e\n\u003ca href=\"https:\/\/www.tiktok.com\/@audiosellerz\" style=\"color:#0066cc;text-decoration:underline;\"\u003eFollow Audio Sellerz on TikTok\u003c\/a\u003e\u003cbr\u003e\n\u003ca href=\"https:\/\/www.youtube.com\/@audiosellerz\" style=\"color:#0066cc;text-decoration:underline;\"\u003eSubscribe to Audio Sellerz on YouTube\u003c\/a\u003e\n\u003c\/p\u003e\n\n\u003ch2\u003eHelpful Audio Sellerz Links\u003c\/h2\u003e\n\n\u003cp\u003e\n\u003ca href=\"https:\/\/audiosellerz.com\/collections\/limitless-lithium\" style=\"color:#0066cc;text-decoration:underline;\"\u003eShop Limitless Lithium\u003c\/a\u003e\u003cbr\u003e\n\u003ca href=\"https:\/\/audiosellerz.com\/collections\/lithium\" style=\"color:#0066cc;text-decoration:underline;\"\u003eShop Lithium Car Audio Batteries\u003c\/a\u003e\u003cbr\u003e\n\u003ca href=\"https:\/\/audiosellerz.com\/collections\/big-3-kits\" style=\"color:#0066cc;text-decoration:underline;\"\u003eShop Big 3 Upgrade Kits\u003c\/a\u003e\u003cbr\u003e\n\u003ca href=\"https:\/\/audiosellerz.com\/collections\/wire\" style=\"color:#0066cc;text-decoration:underline;\"\u003eShop Car Audio Wire \u0026amp; Installation Wiring\u003c\/a\u003e\u003cbr\u003e\n\u003ca href=\"https:\/\/audiosellerz.com\/blogs\/audio-sellerz-blogs\/do-you-need-lithium-for-car-audio\" style=\"color:#0066cc;text-decoration:underline;\"\u003eRead the Lithium Battery Upgrade Guide\u003c\/a\u003e\n\u003c\/p\u003e","products":[{"product_id":"limitless-lithium-retro-pro-56-56ah-lifepo4-battery","title":"Limitless Lithium Retro Pro 56 56Ah LiFePO4 Battery","description":"\u003ch2\u003eLimitless Lithium Retro Pro 56 56Ah LiFePO4 Battery\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eSold by AudioSellerz.com\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe Limitless Lithium Retro Pro 56 56Ah LiFePO4 Battery is a 12-volt LiFePO4 battery from the Limitless Lithium Retro Pro series. It is a higher-capacity option for electrical-support applications where the battery dimensions, terminal orientation, charge voltage, and current demand all match the build.\u003c\/p\u003e\u003ch3\u003eKey Specifications \u0026amp; Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e12V \/ 56Ah LiFePO4 battery\u003c\/li\u003e\n\u003cli\u003e13.1–13.4V resting voltage range\u003c\/li\u003e\n\u003cli\u003e21 lb\u003c\/li\u003e\n\u003cli\u003e8.75 in H x 6.5 in D x 10.125 in W\u003c\/li\u003e\n\u003cli\u003eBCI Group 24 case\u003c\/li\u003e\n\u003cli\u003eM8x1.25 terminals; positive left\u003c\/li\u003e\n\u003cli\u003eInternal balance board; no BMS listed\u003c\/li\u003e\n\u003cli\u003eMaximum charging voltage: 14.8V\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eElectrical Planning Matters\u003c\/h3\u003e\u003cp\u003eBefore installation, confirm the vehicle charging system can stay within the battery's specified charging range. Use appropriately sized power and ground wire, secure connections, and correct fuse protection.\u003c\/p\u003e\u003cp\u003ePlanning the rest of the electrical system? \u003ca href=\"https:\/\/audiosellerz.com\/collections\/limitless-lithium\" style=\"color:#0066cc;text-decoration:underline;\"\u003eshop Limitless Lithium at AudioSellerz\u003c\/a\u003e, compare \u003ca href=\"https:\/\/audiosellerz.com\/collections\/big-3-kits\" style=\"color:#0066cc;text-decoration:underline;\"\u003eBig 3 upgrade kits\u003c\/a\u003e, \u003ca href=\"https:\/\/audiosellerz.com\/collections\/wire\" style=\"color:#0066cc;text-decoration:underline;\"\u003ecar audio wire and install wiring\u003c\/a\u003e, and review our \u003ca href=\"https:\/\/audiosellerz.com\/blogs\/audio-sellerz-blogs\/do-you-need-lithium-for-car-audio\" style=\"color:#0066cc;text-decoration:underline;\"\u003elithium battery upgrade guide\u003c\/a\u003e before finalizing the build.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSold by AudioSellerz.com\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eFollow Audio Sellerz\u003c\/h3\u003e\n\u003cp\u003eStay connected with Audio Sellerz for car audio builds, product updates, installation tips, videos, giveaways, new releases, and behind-the-scenes content from our team.\u003c\/p\u003e\n\u003cp\u003e\n\u003ca href=\"https:\/\/www.facebook.com\/Audiosellerz\/\" style=\"color:#0066cc;text-decoration:underline;\"\u003eFollow Audio Sellerz on Facebook\u003c\/a\u003e\u003cbr\u003e\n\u003ca href=\"https:\/\/www.instagram.com\/audiosellerz\/\" style=\"color:#0066cc;text-decoration:underline;\"\u003eFollow Audio Sellerz on Instagram\u003c\/a\u003e\u003cbr\u003e\n\u003ca href=\"https:\/\/www.tiktok.com\/@audiosellerz\" style=\"color:#0066cc;text-decoration:underline;\"\u003eFollow Audio Sellerz on TikTok\u003c\/a\u003e\u003cbr\u003e\n\u003ca href=\"https:\/\/www.youtube.com\/@audiosellerz\" style=\"color:#0066cc;text-decoration:underline;\"\u003eSubscribe to Audio Sellerz on YouTube\u003c\/a\u003e\n\u003c\/p\u003e","brand":"Limitless Lithium","offers":[{"title":"Default Title","offer_id":56841390751884,"sku":"RP24-56AH","price":1339.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/5076\/8524\/files\/RETROPRO56-001__97324.1701381622.webp?v=1788836408"},{"product_id":"limitless-lithium-retro-pro-56-with-3-5a-battery-maintainer","title":"Limitless Lithium Retro Pro 56 With 3.5A Battery Maintainer","description":"\u003ch2\u003eLimitless Lithium Retro Pro 56 With 3.5A Battery Maintainer\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eSold by AudioSellerz.com\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe Limitless Lithium Retro Pro 56 With 3.5A Battery Maintainer is a 12-volt LiFePO4 battery from the Limitless Lithium Retro Pro series. It is a higher-capacity option for electrical-support applications where the battery dimensions, terminal orientation, charge voltage, and current demand all match the build.\u003c\/p\u003e\u003ch3\u003eKey Specifications \u0026amp; Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eRetro Pro 56 56Ah LiFePO4 battery\u003c\/li\u003e\n\u003cli\u003eBCI Group 24 case\u003c\/li\u003e\n\u003cli\u003e13.1–13.4V resting voltage range\u003c\/li\u003e\n\u003cli\u003eMaximum charging voltage: 14.8V\u003c\/li\u003e\n\u003cli\u003eIncludes compatible 3.5A stock-voltage maintainer\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eElectrical Planning Matters\u003c\/h3\u003e\u003cp\u003eBefore installation, confirm the vehicle charging system can stay within the battery's specified charging range. Use appropriately sized power and ground wire, secure connections, and correct fuse protection.\u003c\/p\u003e\u003cp\u003ePlanning the rest of the electrical system? \u003ca href=\"https:\/\/audiosellerz.com\/collections\/limitless-lithium\" style=\"color:#0066cc;text-decoration:underline;\"\u003eshop Limitless Lithium at AudioSellerz\u003c\/a\u003e, compare \u003ca href=\"https:\/\/audiosellerz.com\/collections\/big-3-kits\" style=\"color:#0066cc;text-decoration:underline;\"\u003eBig 3 upgrade kits\u003c\/a\u003e, \u003ca href=\"https:\/\/audiosellerz.com\/collections\/wire\" style=\"color:#0066cc;text-decoration:underline;\"\u003ecar audio wire and install wiring\u003c\/a\u003e, and review our \u003ca href=\"https:\/\/audiosellerz.com\/blogs\/audio-sellerz-blogs\/do-you-need-lithium-for-car-audio\" style=\"color:#0066cc;text-decoration:underline;\"\u003elithium battery upgrade guide\u003c\/a\u003e before finalizing the build.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSold by AudioSellerz.com\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eFollow Audio Sellerz\u003c\/h3\u003e\n\u003cp\u003eStay connected with Audio Sellerz for car audio builds, product updates, installation tips, videos, giveaways, new releases, and behind-the-scenes content from our team.\u003c\/p\u003e\n\u003cp\u003e\n\u003ca href=\"https:\/\/www.facebook.com\/Audiosellerz\/\" style=\"color:#0066cc;text-decoration:underline;\"\u003eFollow Audio Sellerz on Facebook\u003c\/a\u003e\u003cbr\u003e\n\u003ca href=\"https:\/\/www.instagram.com\/audiosellerz\/\" style=\"color:#0066cc;text-decoration:underline;\"\u003eFollow Audio Sellerz on Instagram\u003c\/a\u003e\u003cbr\u003e\n\u003ca href=\"https:\/\/www.tiktok.com\/@audiosellerz\" style=\"color:#0066cc;text-decoration:underline;\"\u003eFollow Audio Sellerz on TikTok\u003c\/a\u003e\u003cbr\u003e\n\u003ca href=\"https:\/\/www.youtube.com\/@audiosellerz\" style=\"color:#0066cc;text-decoration:underline;\"\u003eSubscribe to Audio Sellerz on YouTube\u003c\/a\u003e\n\u003c\/p\u003e","brand":"Limitless Lithium","offers":[{"title":"Default Title","offer_id":56841395503244,"sku":"RP24-56AH\/MTN","price":1399.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/5076\/8524\/files\/combo-retro56-35v2__98758.1727382300.webp?v=1788836411"}],"url":"https:\/\/audiosellerz.com\/collections\/limitless-lithium-retro-series-lifepo4-batteries.oembed","provider":"Audio Sellerz","version":"1.0","type":"link"}