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

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Relion Battery MPN: RB300

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Sale price$4,119.00 Regular price$5,472.00

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Description

This new 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.

Product Details

  • 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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