52V Battery, 48V LiFePo4 Battery For Electric Boat, Small Day Cruiser, Lake Boat, Electric Tender, Sailboat

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Batteries shown according to actual customer cases

When you choose Bonnen Battery for your project, you’re providing your customers with a superior boating experience. Here’s what they get:

⚡Worry-Free Boating: With our advanced BMS and IP67-rated construction, owners can trust their power system in any weather. It’s a “set it and forget it” solution.

⚡More Time on the Water: The high energy density of LiFePO4 means longer run times between charges. Less time at the dock, more time enjoying the water.

⚡Enjoy the Silence: Electric motors are quiet. Our batteries deliver that power without any noise or fumes, allowing boaters to enjoy the sounds of nature.

⚡Zero Maintenance: Unlike lead-acid batteries, our LiFePO4 batteries require no watering, cleaning of terminals, or other regular maintenance.

⚡Enhanced Performance: The significant weight reduction improves the boat’s speed, handling, and overall efficiency.

⚡Clean & Green Power: Offer a 100% eco-friendly solution with zero emissions. It’s a powerful selling point for environmentally-conscious buyers.

✅ Small Day Cruiser ⇱ — A 52V pack gives quiet, efficient propulsion for short- to medium-range day trips with fast recharging between outings.

✅ Lake Boat — IP67 protection and low maintenance make these packs ideal for day use on lakes where splash and wet storage are common.

✅ Electric Tender — Compact 48V packs deliver reliable start and cruise power while keeping weight low for easy handling.

✅ Sailboat (auxiliary power) — Use a slim pack with external display in the cockpit or locker for silent motoring and reliable battery support for instruments and autopilot.

✅ Multi-purpose / hybrid setups — Combine with solar chargers or shore chargers for extended time on the water and reduced fuel dependence.

What’s the biggest difference between this LiFePO4 battery and my old, heavy lead-acid ones?
The main differences are weight, lifespan, and maintenance. Our LiFePO4 battery is up to 60% lighter, which can improve your boat’s performance. It lasts for over 4000 charge cycles (many years of use), and it’s completely maintenance-free—no need to add water or clean terminals.

I boat in the ocean. Is the aluminum case safe for saltwater use?
Absolutely. The battery is housed in a rugged, corrosion-resistant aluminum alloy case specifically designed to withstand harsh marine environments, including saltwater spray and humidity.

What does the “IP67 Waterproof” rating really mean for me?
IP67 means the battery is fully protected from dust and can handle being submerged in up to 1 meter of water for 30 minutes. For you, this means you don’t have to worry about rain, waves, or heavy spray damaging your power source. It’s built for real-world boating conditions.

What information does the external display screen show me?
The screen gives you critical information at a glance. You can instantly see your battery’s State of Charge (SoC), current voltage, and how much power you’re drawing. This helps you know exactly how much run time you have left.

You say LiFePO4 is the “safest” lithium. Is there any risk of fire?
LiFePO4 is known for its incredible stability. Unlike the lithium chemistries used in some phones or laptops, it is not prone to overheating or catching fire. Combined with our smart BMS, it’s the safest and most reliable choice for your boat.

What is a BMS and what does it do for me?
BMS stands for Battery Management System. Think of it as the battery’s onboard brain. It automatically protects your battery from issues like over-charging, deep discharging, or short circuits. It keeps both you and your expensive battery safe, ensuring a long and reliable service life.

Will this lightweight battery actually make my boat faster or handle better?
Yes, it’s very likely. By significantly reducing the weight in your boat, you can see improvements in handling, efficiency, and even top speed. Your boat will feel more responsive and sit higher in the water.

How much longer can I stay out on the water with this battery?
While the exact time depends on your boat and motor, our LiFePO4 batteries have a much higher energy density ⇱ than lead-acid batteries of the same size. This means you get much longer run times, allowing you to spend more time cruising and less time heading back to the dock to charge.

Is this a good battery for my sailboat’s auxiliary electric motor?
It’s a perfect fit. It provides reliable, silent power to get you in and out of the harbor or to motor along when there’s no wind. Its light weight also helps maintain your sailboat’s performance under sail.

How many years can I expect this battery to last?
Our batteries are rated for over 4000 charge-discharge cycles while retaining most of their original capacity. For the average boater, this translates to many, many years of worry-free power.

What kind of regular maintenance does this battery need?
Zero. It’s a “set it and forget it” system. There is no watering, no desulfating, and no terminal cleaning required.

How do I know if I need the 48V or other battery for my electric motor?
You should always match the battery’s voltage to your motor’s specifications. Please check the manual for your electric propulsion system or consult with your installer to ensure you select the correct voltage.

My boat’s battery compartment is an odd shape. Can I get a battery that fits?
Yes. Because Bonnen is the manufacturer, we can work with your dealer or boat builder to create a custom-sized battery pack that fits your specific space requirements.

How long does the battery take to recharge?
Charging time depends on the charger you use, but LiFePO4 batteries can be charged much faster than traditional lead-acid batteries. You’ll be back on the water much quicker.

Is this battery hard to install?
The battery is designed to be a “drop-in replacement” for lead-acid systems, making installation straightforward. However, we always recommend having it installed by a qualified marine technician to ensure everything is connected safely and correctly.