Xantrex 36V 50Ah Lithium-Ion Battery

Unlock Superior Power for Your Marine and Mobile Adventures

Imagine heading out on the water or hitting the road with a battery that delivers relentless power without the weight and bulk of traditional options. This 36V 50Ah LiFePO4 battery steps in seamlessly where lead-acid Group 31 batteries fall short, especially for demanding setups like trolling motors on fishing boats. Its compact design packs exceptional energy density into a familiar footprint, freeing up space while boosting runtime on every trip.

Crafted with UL1642-certified cells and layered redundant safety systems, it stands as one of the most reliable choices for rugged environments. Whether you're battling waves or navigating off-grid routes, this battery endures up to 4,000 cycles—eight to ten times the lifespan of standard AGM or flooded lead-acid counterparts—ensuring years of dependable service.

Innovative Sleep Mode for Extended Storage

One standout feature sets this battery apart during downtime. In active use, it self-discharges at a modest 12.5% state of charge (SOC) per month. But after just 10 days of inactivity, it intelligently shifts into sleep mode, slashing that rate to only 3% SOC per month. A simple charge or discharge wakes it right up, resetting the timer. This smart conservation means less worry about deep discharges during off-seasons, preserving capacity for when you need it most.

Bluetooth Monitoring at Your Fingertips

Stay connected without guesswork. Pair it with the dedicated app on your smartphone to monitor SOC, spot faults in real-time, and even control remote on/off functions. This level of visibility empowers quick troubleshooting, whether you're dockside or deep in the backcountry, keeping your systems running smoothly.

Thrives in Extreme Conditions

Engineered for the real world, it handles charging up to 55°C (131°F) without compromise, ideal for sun-baked decks or engine bays. Low-temperature resilience and an included self-protecting BMS guard against overcharge, over-discharge, and shorts. For colder climates or external mounts, consider the optional heating blanket to maintain peak performance year-round.

LiFePO4 Advantages Over Traditional Lead-Acid Batteries

Why make the switch? LiFePO4 chemistry delivers consistent voltage throughout discharge, unlike lead-acid's steep drop-off. You'll get more usable energy per cycle, lighter weight for better fuel efficiency, and zero maintenance—no watering or venting required. In head-to-head tests, users report double the runtime for trolling motors, translating to longer fishing days without recharging hassles.

• Up to 4,000 cycles to 80% health vs. 400-500 for lead-acid
• Half the weight for easier handling and installation
• Stable output power—no voltage sag under load
• Safer chemistry with minimal thermal runaway risk

Versatile Applications Across Industries

From weekend warriors to pros, this battery powers diverse setups:

• Marine: Trolling motors, fish finders, and onboard electronics for extended outings.
• RVs: House loads, inverters, and accessories without draining starters.
• Trucks: Heavy-duty and work rigs for tools, lifts, and telematics.
• Specialty Vehicles: Custom builds, emergency services, or off-road beasts.

Its table-mount design and M8 IP rating ensure secure, weather-resistant fitment in tight spaces.

Detailed Specifications

Meets UN/DOT 38.3 standards for safe lithium-ion transport.

Pro Tips for Peak Performance

To maximize those 4,000 cycles, pair with a compatible LiFePO4 charger, avoid full discharges below 20% SOC when possible, and store at 50-80% charge in moderate temps. Its drop-in compatibility simplifies upgrades—often just swap and update your charger's settings for voltage limits.

Frequently Asked Questions