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The 3 Best Marine Battery Chargers of 2022

Marine battery chargers are required to charge the on board batteries in a ship or boat. To maintain the life of these batteries, it is essential to have the best marine battery charger to charge it. Here, we have presented to you the best marine electric chargers on the market right now.

Best Rechargeable Batteries
Best Universal Battery Charger
Best 3 Bank Marine Battery Charger
Best Deep Cycle Battery Charger
Best AA Battery Charger
Best LiPo Battery Charger
Best 18650 Battery Charger

1. Noco Gnoco Genius GenPro 10X2

Best Marine Battery Chargers

Noco Gnoco Genius GenPro is a 12V lead-acid and lithium-ion battery. It is designed to charge 2 12V batteries. This charger supports all types of lead-acid and lithium-ion batteries, including marine, boat, starter, and deep-cycle batteries. The charger includes a system of 4 charging modes which are 12V, 12V AGM, 12V Lithium, and 12V repair mode.

This charger also has an integrated thermal system that monitors and adjusts the battery cycle according to the surrounding temperature. Moreover, the company also claims it to be the most rugged, compact and powerful onboard marine charger they have ever made.

+ Rated IP68 waterproof

+ Charge dead batteries to 0-volts

+ Charges battery with as low as 1-Volt charge

Takes a while to charge

Get it at Amazon

2. Schumacher Fully Automatic Marine Battery Charger

Best Marine Chargers

This Schumacher delivers 15-Amp to rapid charge and 3-Amp to maintain automotive and marine batteries. It is compatible with standard, AGM, gel and deep-cycle batteries. It automatically detects the 6V or 12V battery and accordingly adjusts the amperage rate to charge and maintain it.

The Schumacher comes with reverse hook-up protection that prevents the charger from operating if clamps are reversed, protecting your battery and charger from reverse polarity that can cause shocks or short-circuiting. It has an LCD display that is easy to use and simple buttons.

+ Easy to use

+ Lightweight

+ Safe and reliable

Batteries may overheat if left on for too long

Get it at Amazon

3. ProMariner Gen 3 ProSport 43021 Marine Battery Charger

Best Marine Chargers

ProMariner Gen 3 ProSport 43021 is a 20-Amp 2/24/36 Volt 3 Bank Waterproof Marine Battery Charger. It can charge up to 3 batteries efficiently by using its distributed on demand technology. This technology helps automatically distributes charge amongst all the batteries as needed. Overall, it charges your batteries efficiently.

The ProMariner works quickly and efficiently and has a lightweight design. It has advanced technology that allows you to cut out early troubleshooting steps by indicating battery and system connections.It has protection to combat overload, reverse polarity and ignition, over-temperature, and over-voltage.

+ Easy to install

+ IP67 rated waterproof

Does not have an on/off switch

Get it at Amazon

What to Consider Before Buying a Marine Battery Charger

Before purchasing a marine battery charger, here are a few things you should think about.


First and foremost, you don’t want to skimp on the quality of your charger. You need to make sure you find a durable charger that has waterproof protection and can withstand shocks. 

Battery Coverage

Not every charger will be compatible with your type of batteries. It is essential that you find a charger that will effectively read your battery and be able to tell when it is nearly done charging to avoid over-charging. This also means finding a charger with the right amount of voltage. You’ll likely either need a charger with 6V and 12V or one with 24V and 48V.

Charge Time

How long it takes to charge your battery will depend on its size. However, the more powerful your charger is, the quicker it will charge your battery. Check the charge time of any charger you’re considering to make sure it is compatible with your needs. 


You’ll want to see what the required power source for your charger is. If you typically leave your boat overnight, you don’t have to worry about finding a specific one that needs a shore power unit. You can also look into portable chargers.


To ensure you don’t cause harm to yourself or others, there are a couple of features you’ll want to look for in your battery charger. You’ll want protection from overheating, over-charging, voltage, and current. This is especially essential if you will be leaving your charger and battery unattended. 

Tips For Using a Marine Battery Charger

Here are some tips to keep in mind to get the most out of your marine battery charger. 

  • Consider using a remote for your charger when the display is not easily visible
  • If you have a dark-colored hull, avoid mounting your charger directly inside it
  • Mount your charger in a location that will have cool air circulating around it
  • Always find a dry location for your battery and charger
  • Keep your charger away from areas that may have vapor and oils

Wrapping Up

Referring to our above given list of chargers, we recommend you to choose the charge according to your battery size and type. Hope our recommendations were helpful to you.

Hungry for more electric gadget reviews? Read our review on the best 3 bank marine battery chargers, the best apple watch chargers, and the best hand crank chargers!

Frequently Asked Questions

What is the best way to charge a deep-cycle marine battery?

The best way to charge a deep-cycle marine battery is via trickle charging.

Can you use a regal charger to charge a deep cycle battery?

It would take much longer to use a regular battery charger and normal battery chargers will not be able to detect when your battery is almost done charging, meaning it won’t switch charge modes. This could cause a lot of damage to your batteries.

What do I do if my charger overheats?

To avoid overheating, make sure you buy a battery charger that has over-heat protection and is made of high-quality materials. Overheating can cause damage to your batteries and be very unsafe. If your charger is overheating, stop using it.