[Pre-purchase instructions] The like-new batteries were purchased by customers who mistakenly bought the wrong capacity or incompatible batteries for their applications. We assure you that our batteries are thoroughly checked and tested before delivery ( only a few have minor scratches on the surface). Our like-new batteries come with a 4-year warranty, while our used-very good batteries have a 5-year warranty. [Innovative 100A BMS with Bluetooth 5.0] Easily connect to the battery via the Bluetooth app by scanning the QR code on the battery top. This ensures a stable, interference-free connection, allowing you to monitor real-time battery status, including SOC and voltage. The upgraded BMS includes self-recovery protection (30s) and a pre-charge function, simplifying operations and enhancing compatibility for an exceptional user experience.[BCI Group 31, Universal Fit] Introducing the Power Queen 12V 100Ah Group 31 Bluetooth battery, meticulously crafted to meet BCI standards for Group 31 batteries. The transition from lead-acid to lithium effortlessly with its seamless replacement design. Its universal compatibility makes it ideal for trailer RVs, off-grid camping or living, and home solar storage systems.[Designed for Trolling Motors, Enhance Your Fishing Experience] Our advanced BMS offers comprehensive protection against overcharge, over-discharge, over-current, short circuit, over-temperature, and low-temperature conditions. Maximize your battery's lifespan and charging efficiency with low-temperature cutoff protection, ensuring safety and reliable power even in the coldest conditions.[Extra Protection BMS & Low Temp Cut-off] Our advanced BMS offers comprehensive protection against overcharge, over-discharge, over-current, short circuit, over-temperature, and low-temperature conditions. Maximize your battery's lifespan and charging efficiency with low-temperature charging cutoff protection, ensuring safety and reliable power even in the coldest conditions.[Peace of Mind with Warranty and Support] The Power Queen 12V 100Ah Bluetooth LiFePO4 Battery boasts a lifespan of up to 10 years and comes with a 5-year warranty. It supports 4000 cycles at 100% DOD, 6000+ cycles at 80% DOD, and up to 15,000+ cycles at 60% DOD. For optimal performance, charge the battery at 14.6V with a 20A charging current, which takes approximately 5 hours to charge fully. Upgrade to the Power Queen “One for ALL” LiFePO4 Battery today and redefine your outdoor experiences with unmatched power and reliability.[Automatic Overload Protection and Recovery] Featuring automatic overload recognition and protection mechanisms, the Power Queen 12V100Ah Group 31 Bluetooth LiFePO4 battery self-protects and resumes normal operation when an overload is detected. This ensures a reliable power supply and extends the battery's lifespan, all without the need for constant monitoring or manual resets.[US Warehouse & Fast Shipping] Shipping locations include CA, TX., and GA, Generally, you will receive the batteries in 2-5 working days, but you need to determine the delivery time according to the actual situation. We offer a 5-year warranty and 24-hour service, please contact us for stock availability.Attention Please: This battery is NOT suitable to be used as a starter battery, golf cart battery, or for high-power applications such as water pumps, electric jacks, lifts, vacuum cleaners, four-wheel drive lawn mowers, etc., for more info please consult Power Queen: service@ipowerqueen.com
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