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
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Manufacturer Part Number: RB300
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Series: Legacy Series
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Voltage: 12 Volt
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BCI Group Number: 31
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Battery Type: Marine Deep Cycle
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Electrolyte Style: Lithium Iron Phosphate (LiFePO₄)
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Amp Hour Rating: 300 AH
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Cold Cranking Amps (CCA): 200 Amps
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Cranking Amps: 100 Amps
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Reserve Capacity: 720 Minutes
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Terminal Location: M8 Threaded Stud Top Terminals
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Case Material: ABS
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Length: 20.6 Inches
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Width: 10.5 Inches
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Height: 8.7 Inches
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Marine Rated: Yes
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Universality: Fully Universal
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Ingress Protection: IP65
Features & Benefits
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High-capacity LiFePO₄ lithium technology provides significantly more usable energy than lead-acid batteries
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Integrated Battery Management System (BMS) ensures protection, safety, and accurate SOC calculations
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Ultra-fast charging and high-efficiency discharge performance
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Up to 99% efficiency for maximum usable power
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Extended cycle life with maintenance-free operation
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Durable ABS enclosure for demanding marine and off-grid environments
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Capable of charging in temperatures from -20°C to 45°C
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Ideal solution for large battery banks and high-consumption systems
Applications
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Marine deep cycle power systems
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RV house battery banks
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Solar energy storage
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Off-grid and backup power systems
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High-demand DC power applications
Warranty
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Limited 10-Year Product Warranty
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3-Year Free Replacement Warranty
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Non-Returnable Item
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