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Find Your Perfect Boat Battery Charger

These high-speed, smart boat battery chargers plug safety and security into all of your marine adventures.

Whether on the open sea or the lazy lake, a carefree, safe adventure begins with a fully charged, reliable battery. Keep your deep cycle boat battery in maximum working order with an Ionic smart boat battery charger.

experience the advantage of ionic brand lithium batteries

3 blue LithiumHub Ionic batteries.

11 year
warranty

Buy with confidence with our competitive no-nonsense 11 year warranty.

grade a
cells only

Ionic uses the best cells so your battery lasts longer and performs better.

bluetooth
monitoring

Monitor your charge at any time from our user-friendly Ionic mobile app.

Advanced
BMS

Ionic batteries are 100% compatible and safe with Yamaha and Mercury motors

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get the battery of tomorrow, today

50%

50 percent lighter

0%

zero maintenance

200%

2x the power

500%

5x faster charging

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Our Lithium LiFePO4 batteries bring you revolutionary technology ahead of its time. As the creators of the Ionic brand, we combine powerful lithium, Grade A battery cells, and Bluetooth monitoring for a battery that lasts longer, works harder, and plays smarter. With LithiumHub, you’re guaranteed 100% US based support, plus a competitive, no-nonsense 11-year warranty.

Lithium LiFEPO4 Boat Battery Chargers

Find the right smart charger for your boat batteries here. Choose from 12V, 24V, or 36V chargers.

12V Boat Battery Chargers

12V Single Chargers

These single chargers charge individual 12V boat batteries.

12V Onboard Chargers

Charge multiple 12V boat batteries at the same time with these smart onboard chargers.

24V Boat Battery Chargers

Use these chargers for single 24V boat batteries.

36V Boat Battery Charger

The Ionic 2 bank charger charges one 36V 10A battery and one 12V 10A battery at the same time.

Why Choose an Ionic Smart Charger for Your Marine Battery?

First comes the boat, then comes the batteries...then comes the charger and other accessories. It’s a package deal--so make sure no part of the package is faulty. When choosing a charger for your marine battery, not just any charger will do. Especially if you’ve invested in top-quality, high tech lithium marine batteries.

Match the power and prowess of your lithium LiFEPO4 batteries with an equally outstanding charger: the Ionic smart boat battery charger.

What is a smart boat battery charger?

Sure, you can charge your lithium boat battery with an “ordinary” charger. But you won’t get the same results or perks that a smart charger offers. Check out these smart charger benefits:

  • DAMAGE-FREE

    Our Ionic smart boat battery chargers stop charging and switch to float mode once fully charged. This smart function protects your battery from damage.

  • HIGH QUALITY

    Built strong from high-quality materials, our chargers are made for life on the water. They are toughness-tested, water resistant, and long-lasting.

  • OPTIMIZED FOR LITHIUM

    While our smart boat battery chargers are compatible with other battery types, they are optimized for LiFePO4 batteries. Get on the water fast with a rapid, reliable charge every time.

  • CCCV CAPABLE

    Maximize the lifespan of your marine battery with CCCV (constant current, constant voltage).

  • LIGHTWEIGHT

    These chargers won’t burden your boat with dead weight. Our largest Ionic charger, the 4 Bank 12V 10A charger, weighs just 11 pounds.

  • BUILT TO FIT

    Worried about fitting yet another gadget inside your boat? Our smart chargers won’t swallow up limited space. Our largest charger, the 4 Bank 12V charger, measures just 12in x 9.5in x 2in.

  • AFFORDABLE

    Sure, these smart chargers are ahead of their time. But their price tag fits the competitive prices of today’s market. Take advantage of our 30 Day Return Policy, top-tier warranty, and free shipping.

Boat Battery Charger Guide

Want to get the best performance possible from your boat battery? It all starts with picking the right boat battery charger.

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CHOOSE BY VOLTAGE/AMPS

For a charger to be compatible with a battery, it needs to have the right amount of voltage and amps. The voltage of your charger should match the battery voltage. (For example, a 12V charger for a 12V battery). However, it’s also possible to connect a charger to more than one battery in a series. For example, you can use a 24V charger to charge a battery bank consisting of two 12V batteries in series.

To determine the amount of amps you need in your boat battery charger, look at the Ah rating of your battery. Ideally, the amp (A) rating of your battery charger should be around 20-33% of your battery’s amp hour (Ah) rating.

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CHOOSE BY TYPE

Once you know the amount of voltage and amps you need, select your charger type. If you want to charge just one battery, a single boat battery charger will do. For charging multiple batteries, choose a 2 bank or 4 bank charger.

SINGLE CHARGERS (CHARGE 1 BOAT BATTERY)

12V 12V LiFePO4 4A Charger. Works with any battery up to 30 Ah. Max charge voltage 14.6V. Max charge voltage 14.6V. 12V LiFePO4 10A Charger Works for 30Ah batteries and larger. Max charge voltage 14.6V. Max charge current 10A. 12V LiFePO4 20A Charger Compatible with 20Ah batteries and larger, optimal for 50Ah batteries and larger. Max charge voltage 14.6V Max charge current 18A 12V LiFePO4 30A Charger Optimal for 12V 100Ah, 125Ah and 300Ah or multiple batteries in parallel. Max charge voltage 14.6V Max charge current 18A
24V 24V LiFePO4 2A Charger Suitable for a 24V 10Ah battery. Max Charge Voltage 29.2V. Max Charge Current 2A. 24V LiFePO4 10A Charger Optimal for a 24V 50Ah battery. Max Charge Voltage 29.2V. Max Charge Current 10A.

ONBOARD CHARGERS (CHARGE MULTIPLE BOAT BATTERIES AT ONCE)

2 Bank Charger
4 Bank Charger 4 banks (Each charges a 12V 10A battery) Max charge voltage 14.6 V

Max charge current 10A (each channel)
Shows charge level and time to charge (when charging lithium batteries only)

5 foot cable for each bank
Green and Red indicator lights show charging status. (Red means charging, Green means charging completed).
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Need More Help?

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Not sure which boat battery charger suits your needs? Speak with our lithium battery and charger experts, located right here in the USA.

Boat Battery Charger FAQs

Do I need a special charger for a boat battery?

Not necessarily. It is most important to match your battery’s chemistry, voltage, and amp hour rating. However, chargers designed with boats in mind tend to be tougher and more water resistant. They weigh less and are sized to fit into tight spaces.

Can I use an Ionic smart battery charger for lead acid or AGM batteries?

Yes! Our smart boat battery chargers are compatible with lithium, lead acid, and AGM batteries. When using an onboard charger, you may charge batteries with different chemistries at the same time. This will not damage your batteries. However, only Ionic lithium batteries are compatible with LithiumHub’s Bluetooth app. This app allows you to view battery charging status, time left to charge, and other stats from your phone.

Are these onboard battery chargers?

Yes, you can place them in your boat and connect them to your batteries. This makes it convenient to simply back your boat into your garage and plug your charger in when it’s time to charge your batteries.

Lithium LiFEPO4 Boat Battery Chargers

Find the right smart charger for your boat batteries here. Choose from 12V, 24V, or 36V chargers.

12V Boat Battery Chargers

12V Single Chargers

These single chargers charge individual 12V boat batteries.

12V Onboard Chargers

Charge multiple 12V boat batteries at the same time with these smart onboard chargers.

24V Boat Battery Chargers

Use these chargers for single 24V boat batteries.

36V Boat Battery Charger

The Ionic 2 bank charger charges one 36V 10A battery and one 12V 10A battery at the same time.

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need help finding the right deep cycle battery?

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Our experts are just a click (or a call) away. Get fast, expert battery advice from a real human, located right here in the USA.

GET IN THE LOOP

We’re always adding incredible lithium products to our lineup. Want to be the first to know when they drop? Sign up for LithiumHub updates, and get the inside scoop on exclusive deals and exciting new additions.

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