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The 5 Best 3 Bank Marine Battery Chargers of 2022

Marine batteries are very sturdy batteries with solid construction. They are used in boats and can withstand a lot of bumpy waves and jerking around. The power required to charge these batteries is also considerably more. So you will require a strong charger to provide full charge. A 3 bank marine battery charger is a good option to look into. Do check out our top 3 bank marine battery chargers of 2022.

Best 3 Bank Marine Battery Chargers Comparison

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1. Noco Genius 3-Bank 15-Amp Smart Marine Charger

Best 3 Bank Marine Battery Chargers

The Noco charger provides fully automatic charging with overcharge protection. It is compact and powerful, and is sure to meet all your needs. It is 100% waterproof and is capable of withstanding long hours underwater.

This charger is capable of charging completely dead batteries from 1-volt to full capacity and even force a charge on a completely dead battery. It has quick and simple mounting and allows for reverse routing without any major problems or issues.

+ 100% waterproof

+ Charges completely dead batteries

+ Easy mounting

Charger is complex

Get it at Amazon

2. ProMariner Gen 3 ProSport 20 Amp Marine Battery Charger

Best 3 Bank Marine Battery Chargers

The ProMariner charger has long term battery storage care. It maintains your batteries at least once a month for long lasting protection, ensuring your battery will last longer. It is lightweight and portable with fast and easy charging. The LED display will show charging and other options so you can quickly access all these functions.

This charger also automatically distributes even charge among all the three batteries. It is able to detects fault quickly and will point them out for correction. With an aluminum design and safety fuse allowing for safe battery use, this charger is a great option.

+ Lightweight and portable

+ Even charge distribution

+ Detects faults

May not reach batteries far apart

Get it at Amazon

3. Schumacher 15 Amp Fully Automatic Battery Charger 

Best 3 Bank Marine Battery Chargers

This charge has high performance and energy with an efficient charger design. This charger will meet all your charging needs easily. It has an LED indicator to keep track of many batteries at once. There is an inbuilt battery type selector function as well, which helps you select the type of battery you need to charge.

This charger is fully water resistant, making it a great option. With this charger, you are able to adjust the current in order to maintain an optimal charge. It also has an option to permanently fix the charger near the battery.

+ LED indicator

+ Fully water resistant.

+ Option to permanently fix the charger near the battery

Get it at Amazon

4. ProMariner ProTournament 360 Elite Series 36 Amp Triple Bank Marine Battery Charger

Best 3 Bank Marine Battery Chargers

This is a high performance charger. It can easily charge batteries even for long duration. It has a multistage charging process and is two to three times faster charging than other chargers, making it a great option for those who would need charging frequently.

This charger has a concealed waterproof fan for cool operation and therefore fast charging. It also has a smart LED display with charge mode indicators and real time charge level status so you can always monitor your batteries.

+ Multistage charging process

+ Concealed waterproof fan

+ Smart LED display


Get it at Amazon

5. Mastervolt ChargeMaster 25 Amp Battery Charger

Best 3 Bank Marine Battery Charger

The Mastervolt charger is a great device which provides quick charging. It is small and compact and easy to move around. It has a three step charging process, which makes it easier for charging. It has inbuilt functions that make charging safe and secure.

This charger has memory function that prevents overcharging in case of power disruption. This charger is only 4 pounds, making it very lightweight. It also has a temperature probe with a wire length around 25 inches.

+ Three step charging process

+ Safe and secure inbuilt functions

+ Memory function

One input for temperature sensor

Get it at Amazon

What to Consider Before Buying a 3 Bank Marine Battery Charger

Before you purchase your battery charger, here are a list of considerations to think about. 

Battery Type

You’ll be able to find deep cycle and crank batteries. Crank batteries are mainly used to start your system while deep cycles are meant to keep it running. Make sure your battery type matches the charger. This also means looking at the voltage to make sure your charger applies the correct amount to your battery. 


You want to ensure your charger is easy to use and operate. This means finding one that does not have too many confusing buttons or options. Digital systems tend to be the easiest to utilize and manual controls must be given attention at all times. 


Some chargers will have smart technology that can detect your battery status and be safer to use. They tend to be more expensive than on-demand chargers. So, consider which is going to be the better option for you.

Tips For Maintaining Your 3 Bank Marine Charger

Here are a couple of tips to keep in mind to get the best use out of your charger.

  • Always wipe your charger dry and keep it in dry storage after use
  • Never have your charger around children
  • Consistently upgrade components and parts
  • Remember to dust it off to get rid of debris
  • Every once in a while, gauge the charger’s functionality

Wrapping Up

In conclusion, the 3 bank marine battery charger is a great option. Firstly, it will charge your batteries faster. Secondly, it will run for a long time with minimal problems. Most importantly, it will ensure that your batteries are well taken care of. There are many great options on the market. Choose one that suits your boating needs. If you have trouble choosing, we would like to recommend the Noco Genius Marine Charger. It will keep your battery healthy and fully charged always.

Frequently Asked Questions

What does a 3 bank battery charger do?

A 3 bank battery charger is able to charge a 3 battery boat. These chargers make for simultaneous charging as opposed to waiting for one to charge and switching the batteries out.

How long does a 3 bank charger take to charge?

Charge time depends on the charger and the status of the battery. You can typically see charge times between 10-12 hours and 4-6.

Should I leave a boat battery charger on at all times?

Leaving a charger on at all times can cause over-charging and damage your batteries as well as be a safety concern. Although some people prefer to do it, this is not recommended. If you do decide do to this, use a trickle charger.