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




