RB36V40 36V 40Ah Lithium Deep Cycle Battery Group 31
Model #: RB36V40 SKU: RB36V40
Product Details
RELiON RB36V40 36V 40Ah LiFePO4 Deep Cycle Battery (Group 31)
RELiON RB36V40 36V 40Ah LiFePO4 Deep Cycle Battery (Model: RB36V40) – High-Performance Power Solution for Marine, Trolling Motors, Solar, Commercial, and Off-Grid Applications
Engineered for marine and commercial durability, the RELiON RB36V40 36V 40Ah LiFePO4 Deep Cycle Battery (Part No: RB36V40) delivers 40Ah of reliable LiFePO4 power at 38.4V (1.536kWh), offering 3x the usable capacity of lead-acid batteries at significantly reduced weight (30.9 lbs), with over 3,000 cycles at 100% DoD. Featuring an integrated BMS for safety and efficiency, IP67 waterproof enclosure for harsh environments, and parallel configuration support for expanded capacity, it handles 50A continuous discharge (175A peak), making it ideal for trolling motors, electric outboards, commercial floor cleaners, solar storage, or off-grid marine systems requiring maintenance-free, long-lasting performance.
Key Features:
- High-Capacity Design: 40Ah at 38.4V (1.536kWh) for extended runtime in 36V marine and commercial systems.
- Integrated BMS: Protects against overcharge, over-discharge, short-circuit, and thermal issues; ensures cell balancing for optimal longevity.
- High Discharge Capability: 50A continuous / 175A peak (7.5s) for powering motors up to 1.92kW or high-demand equipment.
- Extended Cycle Life: 3,000+ cycles at 100% DoD, with <3% monthly self-discharge for reliable standby power.
- Versatile Compatibility: Parallel connections unlimited; drop-in Group 31 replacement; compatible with most 36V chargers (14.6V–15.2V recommended).
- Rugged Durability: IP67-rated ABS/PC enclosure (UL94-V0 flame retardant), vibration-resistant for marine and commercial use; operates from -4°F to 140°F discharge.
- Eco-Friendly: Non-toxic LiFePO4 chemistry, recyclable, and zero maintenance compared to lead-acid alternatives.
- 10-Year Warranty: Backed by RELiON’s commitment to quality and US-based support.
Specifications at a Glance:
- Nominal Capacity: 40Ah at 38.4V (1.536kWh).
- Nominal Voltage: 38.4V.
- Charge Voltage: 42.6V–43.8V; Max Charge Current: 40A.
- Discharge: 50A continuous / 175A peak (7.5s); Low Voltage Cutoff: 27.6V.
- Cycle Life: 3,000+ at 100% DoD; Operating Temperature: Charge -4°F–113°F / Discharge -4°F–140°F.
- Certifications: UN38.3, CE, UKCA, UL1642 (cells), IEC62133 (cells).
- Dimensions: 13.0" L x 6.8" W x 8.4" H (329 x 172 x 214.7 mm); Weight: 30.9 lbs (14 kg).
Pair this battery with RELiON 36V chargers or solar controllers for a complete, high-efficiency power ecosystem. Whether powering trolling motors, commercial floor machines, or solar arrays, the RB36V40 delivers unmatched reliability and runtime. Order now and experience RELiON’s engineered excellence—stocked and ready to ship from relionbattery.com!
(For full technical details, download the datasheet or manual linked on the product page.)




