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Bronson Outdoor MBL Pro Series
The Bronson Outdoor LiFePO4 lithium marine battery for boats with trolling motors
The Bronson Outdoor MBL-PRO series of lithium marine batteries is designed to offer reliable and secure power for demanding outdoor activities such as the use on boats for running trolling motors.
The Bronson MBL-PRO Series, equipped with advanced lithium battery technology, features high energy density in a compact, portable form. It is protected by shock-absorbing EVA foam and a dust- and IP67 waterproof case, ensuring durability. The lightweight design and non-slip rubber handle make it easy to carry and install. Plug-in waterproof connectors provide safe and simple operation.
An advanced Battery Management System (BMS) offers safety with protection against short circuits, overload, and overvoltage, while also optimizing cell performance and extending battery life by active cell balancing, potentially lasting beyond 10 years.
Key Features
Lightweight: Weighs significantly less than traditional lead-acid batteries.
Durable: Maintains original capacity for at least 2000 charge cycles.
Efficient: Optimized charging and discharging reduce power waste.
Robust: Dust and water-resistant (IP67 protection class).
Temperature Resistant: Output between -20°C to +65°C.
USB-C Connection: 100W PD-Charger for fast charging of USB device types.
Accurate Charge Indicator: Six LED lights indicate remaining capacity, blinking below 10%.
Battery Management System: Provides enhanced safety and automatic active cell balancing for a longer lifespan.

Use Cases
The MBL Pro Series are batteries for boats excel in marine settings, offering rugged, maintenance-free 12 V/24 V power tailored for trolling motors and on-board electronics. Anglers count on these deep-cycle LiFePO₄ batteries for the high-current surges and sustained output that whisper-quiet electric trolling motors demand, enabling fuel-free, noise-free navigation all day. Meanwhile, the same batteries seamlessly drive fish finders, echo sounders, live-well pumps, LED deck lights and USB charging ports in an IP67-rated housing.
Beyond boats, the MBL Pro Series lithium marine batteries shines in remote IoT deployments as dependable off-grid power. Paired with solar or wind chargers, these batteries for boats and field gear maintain state of charge for months, even in extreme temperatures, and support LoRaWAN, cellular or satellite gateways for uninterrupted data links. Whether quietly pushing a fishing skiff at dawn or sustaining environmental sensors deep in the wilderness, the MBL Pro Series is not only a battery for boats, it delivers reliable performance and long-lasting energy you need for every outdoor adventure.
Why Choose the MBL Pro Series?
- Integrated Battery Management System (BMS): Safeguards against over-charge, deep-discharge, over-current and over-temperature,active cell balancing, ensuring long service life.
- LiFePO₄ Chemistry: Offers up to 3 × the cycle life of lead-acid, high power density for rapid trolling-motor surges, and a lightweight design for easy installation.
- Rugged Outdoor Construction: IP67-rated, UV-resistant casing with marine-grade terminals and vibration-proof mounting brackets.
- Deep-Cycle Performance: Delivers consistent capacity at up to 80 % depth-of-discharge across hundreds of cycles—ideal for all-day fishing trips or continuous data logging.
- Smart Monitoring (Optional): Built-in Bluetooth lets you check state-of-charge and health metrics on your phone or dashboard.
- Eco-Friendly Operation: Non-hazardous LiFePO₄ cells eliminate acid spills and reduce environmental impact at end of life.
Whether you’re quietly running a trolling motor on the lake at dawn or powering a remote sensor farm in the wilderness, the MBL Pro Series is your trusted partner for rugged, long-lasting outdoor power.