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12V Lithium Trolling Motor Batteries: Everything You Need to Know

Redline Battery Supply

Redline Battery Supply is the Space Coast’s leading supplier of new and refurbished batteries for cars, trucks, motorcycles, boats, golf carts, and more! Founded by Carl Rutgerson the team at Redline is focused on educating their customers while providing the best service and pricing possible.

12V Lithium Trolling Motor Batteries: Everything You Need to Know

Aug 08, 2025

12V lithium trolling motor batteries are quickly becoming the top choice for boaters in Melbourne, Florida—whether you're casting lines in the Indian River Lagoon or enjoying a calm day on Lake Washington. With their superior performance and low maintenance needs, it's easy to see why more anglers are making the switch. In this blog, we'll cover everything you need to know about upgrading to lithium power—and why Redline Battery Supply is your trusted local source for marine lithium battery solutions.

Why Choose 12V Lithium Trolling Motor Batteries?

1. Longer Run Time

12V lithium batteries offer significantly longer run times compared to traditional lead-acid batteries. This means you can fish or cruise longer without the worry of losing power mid-trip.

2. Lightweight Design

A typical lithium battery weighs 50–70% less than its lead-acid counterpart. This weight reduction improves boat performance and handling—especially critical in smaller vessels.

3. Fast Charging

Lithium batteries charge up to four times faster, allowing you to get back on the water sooner. No more overnight charging or dragging around spares.

4. Longevity

Lithium batteries can outlast lead-acid batteries by as much as tenfold in lifespan. Many offer a lifespan of 10+ years with proper care—making them a smarter long-term investment.

Key Features to Look For

When choosing a 12V lithium trolling motor battery, consider:

Built-in Battery Management System (BMS): Protects against overcharging, overheating, and short circuits.

High Discharge Rate: For consistent power to your trolling motor, even under high loads.

Marine-Grade Housing: Waterproof, corrosion-resistant designs built for saltwater and freshwater use.

Warranty Support: Look for batteries backed by strong manufacturer warranties (and local service!).

At Redline Battery Supply, we offer premium-grade lithium batteries engineered specifically for trolling motors—and we stand behind every product with expert local support.

How Many Batteries Do You Need?

If you’re running a 12V trolling motor, one 12V lithium battery is sufficient. For 24V or 36V systems, you’ll need to connect two or three 12V batteries in series. We’ll help you calculate the ideal amp-hour (Ah) capacity based on your motor's specs and your typical time on the water.

Lithium vs. Lead-Acid: The Cost Breakdown

Although lithium batteries have a higher initial price, they last through several lead-acid battery lifecycles and deliver significantly greater efficiency. In the long run, they repay that investment by:

Fewer replacements

Less downtime

Improved performance and range

Why Melbourne, FL Boaters Rely on Redline Battery Supply

As a locally owned business right here in Melbourne, Florida, we understand the unique boating needs of Space Coast residents. Whether you're casting a line at Palm Bay or setting sail from Sebastian Inlet, Redline Battery Supply has you covered:

Expert recommendations tailored to your boat and motor

Top-quality 12V lithium trolling motor batteries from trusted brands

Local service and support you can count on

Stop by our store or give us a call—we’re here to power your next adventure.

Ready to Upgrade?

Ditch the heavy, old-school batteries and embrace the sleek, dependable energy of lithium power. Visit Redline Battery Supply in Melbourne, FL, and let us help you find the perfect 12V lithium trolling motor battery for your setup. Give us a ring at 321-327-8995 or head over to redlinebatterysupply.com to explore our inventory and see current prices.

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