You’ll get a lightweight 36V LiFePO4 pack (50Ah, 1,920 Wh) in a Group‑31 case that’s built for sustained trolling‑motor use rather than engine starting. The integrated BMS supports 50A continuous and 250A peak, with IP65 sealing and certifications like UL1973 and UN38.3. Expect reliable 30–50A runtimes, ~4,000 cycles, and about 33 lb weight. Mount low, fuse at the positive terminal, and size cables properly; read on for installation, runtime math, and tradeoffs.
Some Key Takeaways
- Lightweight 36V, 50Ah LiFePO4 pack (~1,920 Wh) gives long runtime for trolling motors with about half the weight of lead equivalents.
- Integrated BMS supports 50A continuous and 250A peak, protecting cells and sustaining steady voltage under 30–50A loads.
- Durable IP65 enclosure, M8 terminals, and certifications (UL1973, UN38.3, CE, RoHS, FCC, ABYC) suit marine use.
- Expected >4,000 cycles and predictable LiFePO4 performance, but charging is disabled below 32°F and it’s not a starter battery.
- Install low and secure with proper fusing, correct conductor sizing, and plan series/parallel layouts for higher voltage or capacity.
Quick Verdict: Who This Battery Is Best For
Quick verdict: if you need a lightweight, long-lasting 36V deep‑cycle pack for sustained trolling-motor use, this Redodo 50Ah LiFePO4 is built for you. You’ll appreciate the compact anglers’ advantage: Group 31 sizing and reduced weight free up space and let you run longer on the water. You’ll also like that budget buyers get durable chemistry and a long cycle life without constant replacements. You can install it yourself, link packs for higher capacity, and trust onboard BMS safeguards. It won’t start engines, but for sustained trolling and minimalist setups, it delivers reliable, no-nonsense power. Designed with paddlers in mind, it pairs well with other small-boat essentials like emergency power banks to keep your electronics and safety gear running while you fish.
Specs and Certifications: What the Numbers Tell You
A few key numbers tell you exactly what this pack can — and can’t — do: it’s a 36V, 50Ah (1,920 Wh) LiFePO4 deep‑cycle battery in a Group 31 form factor, with a continuous 50A discharge rating (BMS‑rated) and a 250A peak surge capability. You’ll value the clear cell chemistry—LiFePO4—giving predictable voltage under load and long cycle life (over 4,000 cycles). The integrated BMS and IP65 enclosure handle thermal management and protect cells from humidity and salt. Safety certifications (UL1973, UN38.3, CE, RoHS, FCC) and ABYC compliance mean you can deploy this pack confidently on marine systems. For paddlers fitting electronics into small boats, consider deck-mount compass options when planning panel layout for marine systems.
Real-World Performance: Runtime, Weight Savings, and Durability Expectations
When you push this 36V 50Ah LiFePO4 pack into service, expect predictable runtimes, noticeable weight savings over lead‑acid, and multi‑year durability under normal marine use. You’ll get roughly 1920 Wh usable energy; under a 30–50 A trolling load expect steady runtimes that beat equivalent lead batteries and preserve battery longevity through shallow discharge cycling. At ~33 lbs you drop nearly half the weight of two Group 31 lead cells, improving handling and range. The BMS and IP65 enclosure support long-term reliability; quieter operation delivers tangible noise reduction while you fish. Plan for 4,000+ cycles and years of service. Pack a basic repair kit to handle minor on-water fixes and keep your setup running.
Installation and Usage Tips for Boats and Trolling Motors
Because proper installation directly affects performance and safety, you’ll want to plan wiring, mounting, and ventilation before you fit the Redodo 36V 50Ah LiFePO4 into your boat. Place the battery low and central to lower center of gravity; secure with vibration-damping straps and a Group 31 tray. Route cables short and direct, using star-grounding where possible. Use appropriately sized copper conductors, heat-shrinked lugs, and anti-corrosion spray at M8 terminals. Install an accessible fuse or circuit breaker near the positive terminal. Observe wiring best practices: neat runs, strain relief, labeled leads, and keep the BMS ventilation unobstructed for reliable, free-range boating. For small craft and beginners, pairing the battery with essential bilge pumps and basic safety gear improves overall safety on the water.
Pros, Cons, and Buying Checklist
Although compact and lightweight, the Redodo 36V 50Ah LiFePO4 delivers high continuous output and robust protections that suit serious trolling-motor and marine use. You get 50A continuous, 250A peak, IP65 sealing, automotive-grade cells, UL/UN certifications, and ~4,000 cycles — freedom to run long days without bulk. Cons: charging disabled below 32°F, not a starter battery, Group 31 sizing may need trays. Buying checklist: confirm terminal (M8) fit, match BMS current to motor, plan series/parallel layouts, check vendor return policy and Warranty transfers, and verify Battery recycling options and local disposal rules before purchase. Consider also having a dedicated GPS backup system when paddling long distances.
Some Questions Answered
Can I Parallel Multiple Units for Higher Amp-Hour Capacity?
Yes — you can parallel multiple units to increase amp-hour capacity. In a parallel configuration you'll get additive Ah while voltage stays 36V, but you must guarantee matched state-of-charge, identical BMS settings and proper current balancing to avoid uneven wear. Physically connect positive-to-positive and negative-to-negative with equal-length cables, include fusing, and monitor temperatures. You’ll gain runtime and redundancy, but follow manufacturer guidance for safe, balanced operation and warranty compliance.
Is Cold-Weather Performance Reduced for Discharging as Well?
Yes — discharging is somewhat reduced in cold. You’ll hit low temperature cutoffs for charging, but discharge capacity and peak current drop too because electrolyte viscosity increases and internal resistance rises. Expect lower usable Ah, reduced continuous/peak current, and slightly higher voltage sag at low temps. You can operate, but plan for derating, avoid deep cycles in freezing conditions, and warm the pack to restore full performance and longevity.
Do I Need a Special Charger for This Lifepo4 Battery?
Yes — you should use a charger compatible with LiFePO4 chemistry. Choose one that supports 36V LiFePO4 charging profiles and adheres to proper charging protocols (CC/CV, correct float/termination voltages). The battery’s BMS adds protections, but a LiFePO4-specific charger guarantees peak balancing, longevity, and safe low-temperature behavior. You’re free to use smart chargers with adjustable protocols, or manufacturer-recommended units to maximize cycle life and warranty compliance.
How Should I Store the Battery During Off-Season Months?
Store it at a partial charge (40–60%) for long term storage. Keep the battery cool, dry, and ventilated—avoid freezing or direct sunlight. Disconnect terminals, check BMS status monthly, and top up to 40–60% if voltage drops. Use battery maintenance logs and a LiFePO4-capable charger when reconditioning. Aim for storage temperatures between 32–77°F and secure mounting to prevent vibration. That keeps capacity, safety, and your freedom to deploy quickly.
Are Aftermarket Battery Monitors Compatible With the BMS?
Yes — you can use third party monitors, but you’ll need to verify BMS telemetry compatibility first. Check that the monitor supports the BMS communication protocol (CAN, UART, or voltage/current shunt inputs) and pinouts. You’ll connect to the BMS data port or sense leads, configure scaling, and confirm alarms. If protocols mismatch, use a compatible gateway or converter. Always test under load and keep firmware updated for reliable, free-range system monitoring.
