RB40 12V 40Ah Deep Cycle Lithium Battery

Model #: RB40 SKU: RB40

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Product Description for RELiON RB40 12V 40Ah Deep Cycle Lithium Battery

RELiON RB40 12V 40Ah LiFePO4 Deep Cycle Lithium Battery – Reliable Power Solution for Solar, RV, Marine, and Off-Grid Systems

Elevate your energy needs with the RELiON RB40 12V 40Ah LiFePO4 battery (Model: RB40), a compact, high-performance deep cycle battery designed for demanding applications like fishing electronics, robotics, solar lighting, remote power, and outdoor adventures. Delivering 512Wh of energy with a 40A continuous discharge (80A peak for 7.5s), this battery offers more usable capacity, lighter weight, and up to 10x longer life than lead-acid alternatives. Its integrated Battery Management System (BMS) provides robust protection against overcharge, over-discharge, and thermal issues, ensuring safe and efficient operation in rugged environments. Key Features:

  • Superior Usable Capacity: Delivers 100% of rated capacity at any discharge rate, eliminating the need to oversize like with lead-acid batteries.
  • Exceptional Cycle Life: Up to 2,000+ cycles while retaining 80% capacity, backed by a 10-year limited warranty for unmatched longevity.
  • Maintenance-Free & Efficient: 99% round-trip efficiency with <3% monthly self-discharge; no watering, corrosion, or gassing required.
  • Wide Temperature Resilience: Discharge from -4°F to 140°F (-20°C to 60°C), charge from -4°F to 113°F (-20°C to 45°C), and store from 23°F to 95°F (-5°C to 35°C).
  • Safe & Certified: UL1642 (cells), IEC62133 (cells), UKCA, CE, and UN 3480 compliant; eco-friendly LiFePO4 chemistry with no fumes or pollution.
  • Rugged IP66 Construction: Dust-tight and water-resistant ABS enclosure with M8 threaded terminals for secure, vibration-resistant connections.
  • Fast Charging: Supports up to 40A continuous charge with low internal resistance for quick recharges.
  • Scalable Design: Up to 4 batteries in series; compatible with major inverters and systems for expanded setups.

Specifications at a Glance:

  • Voltage: 12.8V; Capacity: 40Ah; Energy: 512Wh.
  • Discharge: 40A continuous, 80A peak (7.5s); Charge: 40A max.
  • Efficiency: 99%; Self-Discharge: <3% per month.
  • Dimensions: 7.8 x 6.5 x 6.8 in (197 x 166 x 173 mm); Weight: 11.9 lbs (5.4 kg).
  • Enclosure: IP66 ABS; Terminals: M8 x 1.25.

Pair this battery with our premium chargers and inverters for a complete, sustainable power ecosystem. Whether powering RV trips, marine outings, or solar installations, the RB40 delivers reliable, lightweight performance and peace of mind. Order now and harness RELiON’s advanced lithium technology—stocked and ready to ship from lithiumion-batteries.com!

(For full technical details, download the datasheet or manual linked on the product page.)

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RELiON RB40 12V 40Ah LiFePO4 deep cycle lithium battery for solar, RV, and marine applications