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RELiON Lithium Battery RB300 Group 31 12V 300Ah Marine Deep Cycle

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Relion BatterySKU: 06-8329

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Sale price$4,038.00 Regular price$5,626.00

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Only 2 units left

Description

RELiON Legacy Series Lithium Battery RB300 is a high-capacity 12-volt, Group 31 lithium iron phosphate (LiFePO₄) deep cycle battery engineered for marine, RV, solar, and off-grid power systems with substantial energy demands. Designed as a direct replacement for large-format AGM, GEL, or lead-acid batteries, the RB300 delivers exceptional usable capacity, ultra-fast charging, and extended cycle life with zero maintenance.

Built with a durable ABS enclosure and an integrated Battery Management System (BMS), the RB300 ensures safe operation, accurate state-of-charge monitoring, and long-term reliability. With 300 amp hours of capacity and an impressive 720-minute reserve capacity, this battery is ideal for applications requiring long runtimes and consistent deep cycle performance.


Key Specifications

  • Manufacturer Part Number: RB300

  • Series: Legacy Series

  • Voltage: 12 Volt

  • BCI Group Number: 31

  • Battery Type: Marine Deep Cycle

  • Electrolyte Style: Lithium Iron Phosphate (LiFePO₄)

  • Amp Hour Rating: 300 AH

  • Cold Cranking Amps (CCA): 200 Amps

  • Cranking Amps: 100 Amps

  • Reserve Capacity: 720 Minutes

  • Terminal Location: M8 Threaded Stud Top Terminals

  • Case Material: ABS

  • Length: 20.6 Inches

  • Width: 10.5 Inches

  • Height: 8.7 Inches

  • Marine Rated: Yes

  • Universality: Fully Universal

  • Ingress Protection: IP65


Features & Benefits

  • High-capacity LiFePO₄ lithium technology provides significantly more usable energy than lead-acid batteries

  • Integrated Battery Management System (BMS) ensures protection, safety, and accurate SOC calculations

  • Ultra-fast charging and high-efficiency discharge performance

  • Up to 99% efficiency for maximum usable power

  • Extended cycle life with maintenance-free operation

  • Durable ABS enclosure for demanding marine and off-grid environments

  • Capable of charging in temperatures from -20°C to 45°C

  • Ideal solution for large battery banks and high-consumption systems


Applications

  • Marine deep cycle power systems

  • RV house battery banks

  • Solar energy storage

  • Off-grid and backup power systems

  • High-demand DC power applications


Warranty

  • Limited 10-Year Product Warranty

  • 3-Year Free Replacement Warranty

  • Non-Returnable Item

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