Relion RB300 12V 300Ah LiFePO4 Lithium Battery Group 8D

The Relion RB300 is a high-performance 12V 300Ah lithium iron phosphate (LiFePO4) battery designed to deliver exceptional power in a lightweight package. Built in the Group 8D form factor, this battery is ideal for marine, RV, off-grid solar, and industrial applications where reliable deep-cycle performance is essential.

Key Features:

• 300Ah capacity at 12V provides 3,840 watt-hours of usable energy
• Weighs approximately 66 lbs—less than half the weight of comparable lead-acid batteries
• LiFePO4 chemistry delivers 3,000+ cycle life at 80% depth of discharge
• Maintenance-free operation with no watering, equalization, or off-gassing
• Built-in Battery Management System (BMS) protects against overcharge, over-discharge, and short circuits
• Flat discharge curve maintains consistent voltage throughout the discharge cycle
• Fast recharge capability accepts high charge currents for minimal downtime
• Operates in temperatures from -4°F to 140°F (-20°C to 60°C)
• Group 8D case dimensions for drop-in replacement of traditional batteries

RELiON batteries are built to withstand the demands of marine environments, recreational vehicles, and off-grid power systems. With superior energy density, longer lifespan, and significantly reduced weight compared to flooded or AGM batteries, the RB300 delivers outstanding value and performance for users who demand reliable power in demanding applications.