Marine & Boat Batteries

LithiumHub’s marine and boat batteries category includes Ionic lithium deep cycle batteries built for reliable power on the water. You’ll find 12V, 16V, 24V, and 36V LiFePO4 batteries for trolling motors, marine electronics, sonar, bass boats, boat accessories, and full marine power setups.

These batteries are ideal for anglers who need steady trolling motor power through long days on the water. They’re also a strong choice for boat owners who want less weight, faster charging, and more usable power than traditional lead-acid batteries. Whether you’re upgrading a fishing boat, powering sonar and electronics, or building a more dependable lithium setup, this category makes it easier to match the right battery to your boat.

A top choice in this category is the Ionic Lithium 12V 100Ah LiFePO4 Deep Cycle Battery. It’s a versatile marine battery for bass boats, trolling motors, and many other uses. With Bluetooth monitoring, an internal BMS, an 11-year warranty, and long cycle life, it’s one of the best all-around options for boaters who want dependable lithium performance.

When choosing a marine lithium battery, consider your motor voltage, amp-hour needs, available space, charger compatibility, and whether you need dedicated power for electronics or trolling. Many Ionic lithium boat batteries also offer major advantages like lighter weight, faster charging, built-in protection, and real-time battery status through the Ionic app.

Ionic Lithium Deep Cycle Marine Batteries

Stay on the water longer with Ionic deep cycle lithium marine batteries. Built with Grade A cells and the only LiFePO4 deep cycle batteries in the marine industry with built-in Bluetooth, they power your trolling motor, fish finder, GPS, and onboard electronics through a full day of fishing — then last for years longer than lead-acid. Whether you run a bass boat, pontoon, center console, or electric boat, there’s an Ionic battery built for it.

Available Voltages

Our marine lineup covers every common boat setup:

• 12V batteries — including the 12V 60Ah and 12V 100Ah deep cycle batteries, and the 12V 150Ah Dual Purpose (1,600 CA) that cranks your engine and runs your electronics (also available with a built-in heater).
• 16V batteries — the 16V 52Ah Marine Electronics/Sonar battery, purpose-built for power-hungry electronics like Livescope.
• 24V batteries — the 24V 50Ah deep cycle for 24V trolling systems in a single battery.
• 36V batteries — the 36V 50Ah deep cycle (Group 31 case) for 36V trolling motors with fewer cables and connection points.

Types of Marine Batteries & Their Purpose

Most bass boats use two types of 12-volt batteries. A cranking (starting) battery delivers short, big bursts of energy to start the main engine. A deep cycle battery releases power slowly to run the trolling motor and accessories like your audio system, fish finder, and GPS, and can be drained and recharged thousands of times. Dual-purpose batteries like our 12V 150Ah do both — ideal for boats without room for two batteries, though many professionals still prefer two dedicated batteries for maximum performance.

Why Lithium Beats Lead-Acid, AGM, and Gel

• Lasts 2–4x longer (up to 10x) — rated for 5,000 cycles, nearly 14 years of daily use, versus 300–400 cycles for lead-acid.
• 99% depth of discharge — use nearly the entire battery, while AGM and lead-acid are limited to about 50%.
• Consistent output — full amperage even below 50% charge, so your electronics don’t fade as the battery drains.
• Up to 70% lighter — less weight means less fuel and easier handling.
• 5x faster charging and zero maintenance — no watering, no corrosion, no sulfation from sitting partially charged.
• Bluetooth monitoring — check exact charge, voltage, and charge time from the Ionic iOS or Android app.
• Holds its charge for years in storage, and is non-toxic, leak-free, and safe to store indoors.

Built for the Elements

Ionic marine batteries are durable enough for rugged conditions and include a built-in BMS that prevents overcharging. They also have built-in cold-weather protection — the battery won’t accept a charge below about 24°F (-4°C) to protect the cells. Our heater models warm the battery so it can safely charge in cold conditions. High energy density means more power stored in a smaller, lighter package.

Typical Marine & Bass Boat Setups

36V trolling motor: The most common setup is three 12V 50Ah batteries for the motor plus one 12V 150Ah for the engine starter and electronics — or simplify with a single 36V 50Ah battery for fewer cables and connection points.

24V trolling motor: Two 12V 100Ah batteries for the trolling motor plus one 12V 150Ah for the starter and onboard equipment.

12V trolling motor: One 12V 150Ah to start your engine and run electronics, plus one 12V 100Ah for the trolling motor.

Connect batteries in series to increase voltage and in parallel to boost amp-hours. Not sure what fits your boat? Contact our U.S.-based experts for a recommendation.

Warranty & Support

Every Ionic marine battery is backed by a competitive, no-nonsense 11-year warranty, Grade A cells, and 100% U.S.-based support — with free shipping on U.S. orders over $150.