LiTime 36V 50Ah TM Bluetooth Low-Temp Protection LiFePO4 Battery Buit in 50A BMS, Deep Cycle Group31 Lithium Iron Phosphate Battery Perfect for Trolling Motors, Marine, Boat, Home Energy Innovative Design for Trolling Motors As a proud member of both the ABYC (American Boat & Yacht Council) and ASA (American Sportfishing Association), LiTime surpasses industry standards with a relentless commitment to innovation. Crafted with premium Automotive-Grade cells, this battery boasts exceptional quality and reliability. With minimal self-discharge and capacity loss, this LiFePO4 battery delivers over 4000+ cycles，traditional lead-acid batteries can be recycled for 200-500 times, and its service life of up to 10 years is 3 times that of lead-acid batteries.Bluetooth 5.0 Integration Monitor Your Battery Status with Ease with Bluetooth 5.0, experience the ultimate convenience with the LiTime 36V 50Ah trolling motor battery, equipped with Bluetooth 5.0. This advanced feature offers:auto-connection, smart discharging control, real-time battery monitoring, battery system checking, turn off battery. 36V 50Ah Battery is suitable for energy storage and not for starting. Suitable for trolling motors up to 120lb thrust.Unparalleled Energy Density The LiTime 36V 50Ah Trolling Motor Battery stands out with its remarkable energy density, outperforming similar LiFePO4 batteries on the market. With an energy density of 57.93 Wh/lb (calculated as 1920Wh/33.14 lb = 57.93Wh/lb), it surpasses the 52.26 Wh/lb of a typical 12V 100Ah TM battery, marking a 10.85% increase in energy density. Ideal for Marine, Trolling Motors, Boats, Home Energy Storage, Solar Power Backup, Off-Grid Solar Systems, and more.Safety Protection and Expansion up to 7.68kWh Its integrated 50A BMS safeguards against harsh environments like high humidity and salt spray, while offering comprehensive protections against low/high temperatures, short circuit, over-voltage, under-voltage, and over-current.  The maximum discharge current is 50A and support 60A for continuous discharge for 30 minutes. LiTime 36V 50Ah battery supports up to 4 batteries in parallel to expand capacity, forming a 36V 200Ah battery system, which can store up to 7.68 kWh of energy and provide the maximum load power of 7.68 kW.5-Year After-Sales Service As the leading LiFePO4 lithium battery brand on Amazon, LiTime stands behind its products with a comprehensive 5-year after-sales service. Our team provides professional technical support and responsive online customer service, ensuring a swift response within 24 hours. Should you encounter any issues or have questions, our dedicated support team is always here to assist you. Note: When using for the first time and after shutting down, you need to use the charger to start up.Notes on Series-Parallel Connection To connect in series-parallel, batteries must be identical (same brand, type, voltage, capacity, and BMS) and purchased within 1 month.DO NOT Used as Starter Battery This 36V 50Ah Trolling Motor Battery is NOT suitable for starting engines or golf carts. If you need a starting battery, please consider our 12V marine starting batteries series. Precautions for Use If OT terminals are attached directly with screws and their thickness is less than 2mm, add gaskets for lock attachment to prevent loosening and overheating. The same applies to clamps.