Best 4 Bank Marine Battery Chargers

Published on: May 4, 2022
Written by Liam Jaxon / Fact-checked by David Rowan

It is a smart idea to choose a 4 bank marine battery charger because it can simultaneously charge multiple batteries at the same time. And its modern charger maintainer system ensures to prolong your battery life which will help you to save money.

Multiple bank onboard marine battery chargers are pretty smart. They have a built-in microprocessor in order to control multi-phase charging without doing any harm to your batteries. This ensures your battery life and performance. If you use it on your boat, then it can maintain off-session unattended through your batteries. That mostly allows your boat to be ready instantly.

With this type of onboard marine battery charger, you don’t need to rotate our battery charger for four batteries. These chargers have a built-in microprocessor so they can control multiple stages of charging with the maintenance process.

Interested in getting one for your boat? Fine, I can help you with the most important facts about the top 10 marine battery chargers of the time.

What is a 4 Bank Battery Charger

GEN4 is an On-Board for charging and keeping up a four 12-volt Marine battery charger, What’s more, start or Deep-Cycle battery. One of the most developed charging frameworks intended for improved execution and life span battery. A 40 Amp, 4-bank (10 Amps for every bank) on-board battery charger.

What Number of  AMP Battery Charger do I Need

An essential charger as a rule charges at about 2-amps – thus needs 24-hours to convey the 48-amps expected to completely charge a level, 48-amp hour battery. In any case, a wide scope of chargers with various charge rates available – from 2-10 amps. The taller the charge works, the quicker a level battery is revived.

How to Choose 4 Bank Marine Battery Charger

Battery Power

When you use it as a trolling motor battery then it has to be powerful. There are three types of battery power category. First one is “Low Output’” 6 AMP or below). You can use it for a few hours only. The second one is “Medium Output” (9-15 AMP). It can be used for a weekend or occasional use.

The final one is “High Output” (15AMP or above). It is highly recommended. You can use this in any situation for a long time. Be careful while selecting a multiple bank battery charger, because the manufacturers usually publish the amperage totally of the 4 banks.

Battery Types & Voltage

The marine battery has to serve multiple purposes on your boat. It needs to provide electricity for all of your primary systems from the start. There are several types of batteries used in marine batteries. Such as AGM or Gel cell. Gel cell batteries need a special charging system which is only provided by the manufacturers.

The AGM type battery does not have that limitation. You should be careful before selecting a 4 bank battery charger that can maintain all the types of battery you have. Most of the marine batteries are 12V or 24V. Choose only that battery that can handle the voltage of the battery of the boat.

Smart Chargers

Make sure that your battery has a smart charging feature. Most batteries have built-in microprocessors to use the intelligent charging program. It can handle your batteries without damaging, overheating, or overcharging. This safety feature protects your batteries from reserve polarity. It also can supervise the battery’s stat, charging status, output, or adjust the charger for every single battery.

Power Inverter

Some marine batteries have outlets of integrated AC to additionally support your AC devices close to the charger. It helps to prevent unwanted conditions.

Charger Condition

The condition of the charger should be perfect. Because the marine environment is filled with a lot of moisture along with humidity and direct spray. So, your battery should be perfectly sealed so as not to be exposed to the direct spray. It must be capable of withstanding and waterproof as you will use it in the marine area. Depending on the amount of the marine charger, it could be attacked by the salt spray or heavier splashes from the sea.

Mountable

Your battery has to be mountable, obviously. As the charger is an onboard kit, it has to have the mounted & associated hardware including the ability. Mounting a 4 bank marine battery will surely reduce the risk of damage to the cable or battery and give you a clean installation.

Safety

Safety first! Boat batteries have risks from fuel and battery. It can cause an explosion. So, choose a battery with certified safety protection features like overload, over-voltage, over-temperature & reserve polarity to stay safe and secure.

View Our Best 4 Bank Marine Battery Chargers

1. Minn Kota Precision (6 to 10 AMP) On-Board Charger

• It has digital control;
• Waterproof, vibration & shock resistant;
• Multi-stage charge type;

This Minn Kota 4 bank marine battery charger is a precision on-board charger. Each bank can output 6 to 10 AMP. In total, it’s 40 AMP, which is pretty good. It has a short charge time but a longer run time. This made it one of the best chargers on the water. It has some extreme protection and safety features. It can maintain power output in order to prevent overloading.

It has a smart option that lets you select which type of battery you want to charge. This option ensures the perfect protection of your battery. You also have full control of your battery. You can select the battery type (Flooded Lead Acid, Gel, or AGM) for each bank to ensure a protected and safe charge. You can use the LED light signal to monitor this system.

This battery charger also has unparalleled durability and digital control. It is easy to say that digital is better than analog. It provides you with a built-in microprocessor that has an awesome design and lets you get a fishing day without worry. It can charge your batteries fast with true rated output.

It has automatic temperature compensation & low-line voltage compensation and an AC plug holder that protects batteries and keeps the plug safe. It has an automatic multi-stage charging facility too. This 4 bank marine battery charger is highly reserved polarity, ignition and short circuit protected.

What we liked

• Flood/Gel/AGM type battery;
• FCC compliant;
• Waterproof, saltwater tested;
• Vibration, shock, and corrosion-resistant;
• Reserve polarity, arc, short circuit, and ignition protected;
• 12, 24, 36, or 48V uses;
• 4 bank with 6 to 10 AMP each;

What we didn’t like

• This item is not portable;

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2. NOCO Genius GEN4 40 Amp 4-Bank On-Board Battery Charger

• Rugged construction;
• IP68 rated;
• Charge batteries 2x faster;

The Noco Genius GEN4 40 AMP 4 bank smart marine battery charger offers you a build of rugged construction and high technology. This device is fully sealed and waterproof.

It has an intelligent Noco VosFX microprocessor that can maintain the whole system and handle open circuits, short circuits, reserve polarity, spark-proof, overheating, overvoltage, and overcharge of your battery. It can be charged by itself automatically. It charges your batteries 2x faster than other traditional batteries with rapid charging technology.

This 4 bank marine battery charger can safely charge Gel, Wet, AGM, and MF batteries from maintenance-free batteries of 25-230Ah. The bulk charge mode automatically turns it off while not using it to extend and keep power. This kit is IP68 and ETL certified. That means it is highly long-lasting and can survive you in the long run. It is a compact charger with lightweight, high efficiency, and high frequency.

This charger is fully environmentally friendly. It can automatically recover power and it is highly ignition and voltage protected.

What we liked

• 4 bank with 10AMP each;
• IP68 & ETL certified;
• Can maintain all types of batteries;
• Has a 12V battery;
• Waterproof and fully sealed;
• Completely environment friendly;
• Lightweight and compact charger;

What we didn’t like

• Absence of digital control;

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3. MinnKota MK 440D On-Board Battery Charger

• It has a 6V/12V battery;
• Can charge 2x faster;
• Digitally controlled;

The Minn Kota MK 440D marine battery charger with 4 bank x 10AMP is a great charger for use. This kit is designed with a microprocessor and it is digital to charge faster, let you survive longer on the water, and protect your battery. It is digitally controlled, so you don’t need to worry about monitoring your batteries. It also takes care of your batteries. The automatic temperature and multi-stage charging protect your battery life and its automatic on-off system can charge your battery 2 times faster.

This 4 bank charger has a notice area so that you can be notified when your battery gets a full charge. It is waterproof and saltwater tested. Besides, it is fully corrosion resistant. It can protect against short circuits, overheating, over-voltage, overcharging, and reverse the polarity of over current. It has a 6V/12V battery. It has an aluminum construction with shock-resistant as well as vibration resistance.

What we liked

• Waterproof, vibration, and shockproof;
• 4 bank with 10 AMP each;
• FCC compliant;
• Digital control;
• Multi-stage charging;
• Saltwater tested & corrosion resistant;
• Safety features;

What we didn’t like

• A longer recovery time;

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4. Clore Automotive PL4020 4-Bank Marine Battery Charger

• 2 amps per channel;
• 6V/12V battery;
• 4 Amp charging rate;

The Clore Automotive PL4020 4 banks ultra-safe smart marine battery charger offers you a build of rugged construction and high technology.

This device is fully sealed and waterproof. It can maintain the whole system and handle open circuits, short circuits, reserve polarity, overheating, overvoltage, and overcharge of your battery.

This device is designed to use the micro-hybrid start-stop feature and can repair damaged batteries. It can be charged by itself automatically. It charges your batteries 2x faster than other traditional batteries with rapid charging technology. Besides, It can safely charge Gel, Wet, AGM, and MF batteries from maintenance-free batteries of 25-230Ah.

The bulk charge mode automatically turns it off while not using it to extend and keep power. That means it is highly long-lasting and can survive you in the long run. It is a compact charger with lightweight, high efficiency, and high frequency. This charger is fully environmentally friendly. It is also UV rays protected and effectively handles multiple batteries.

What we liked

• LED indicators provide visual feedback;
• Four independent channels;
• 4 bank with 10 AMP each;
• Portable, ultra-compact, and lightweight;
• Provides safety protection of redundant levels;
• LED indicators;
• Affordable.

What we didn’t like

• The protection level is a little bit less;

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5. NOCO GENIUS2X4 4-Bank Battery Charger

• 6/12V battery;
• 40Ah x 4 Banks;
• 7.78 Pounds.

The new NOCO GENIUS2X4 8 AMP 4 bank smart waterproof marine battery charger offers you a mix built of rugged construction and high technology. 

It can maintain open circuits, short circuits, reserve polarity, spark-proof, overheating, overvoltage, and overcharge of your battery.

It can be charged by itself automatically. With the rapid charging technology, it charges your batteries 2x faster than other traditional batteries. It can safely charge Gel, Wet, AGM, and MF batteries from maintenance-free batteries. The bulk charge mode automatically turns it off while not using it to extend and keep power.

It is a compact charger with lightweight, high efficiency, and high frequency. It is capable of recovering, diagnosing, and maintaining the batteries of all types of batteries like MF, AGM, Wet, or Gel. This charger is extremely environmentally friendly. It can automatically recover power and it is highly voltage & ignition protected.

What we liked

• Extremely environment friendly;
• 12V deep cycle marine battery;
• Thermal sensor;
• Compact size;
• Capable of recovering, diagnosing, and maintaining batteries;
• Charge dead batteries.

What we didn’t like

• It’s not waterproof.

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6. Minn Kota MK 460 PC Precision 4-Bank Marine Battery Charger

• On-board chargers are built to be waterproof;
• It’s ensuring a fast, safe and precise charge;
• Long run times but short charge times;
• Most protected charge on the water.

Minn Kota Precision Chargers like their Minn Kota MK 460 PC Precision On-Board 4-Bank Charger 15-Amp are installed as long way battery chargers. Feature selection by the bank enables you to choose an alternate type for each bank guaranteeing a protected and safe charge.

It makes longer run times and conditions of charge for quicker increasingly directed exact battery charging. Low-Line Voltage Compensation and Automatic Temperature Compensation change charging voltage consequently to guarantee a protected, quick, and safe charge under all conditions. Minn Kota Precision Chargers onboard are intended to make quick, safe charges.

What we liked

• Waterproof, saltwater tested;
• Battery Equalization;
• Low line voltage compensation.

What we didn’t like

• This item is not portable;

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FAQs About 4 Bank Marine Battery Chargers

What is a 4-Battery Battery Charger?

4-bank 40MP on-board battery charger. The G4 is a board battery charger for charging and holding four 12-volt marine, starter, and deep-cycle batteries. It screens the battery movement for safe, fast, and efficient charging of wet, gel, AGM, and maintenance-free batteries without the worry of fraud.

Can I Mount it to the Hull of the Boat?

Simply no, but technically yes. They are mainly onboard chargers. You won’t get included screws to mount. But to mount it on a hull or boat, first, mount it on a board and then mount the board on the hull of the boat. You may use strong adhesive for this work.

Can I Mount It in a Hull or Boat?

Simply no, but technically yes. They are mainly on board chargers. You won’t get a screw to mount. But to mount it on a hull or boat, first mount it on a board and then mount the board on the hull of the boat. You may use strong adhesive for this work.

Do They Work Well With All the Deep Cycle Batteries?

Yes, they are made to do so. They work fine.

Will I Get 4 Separate Cables for Charging 4 Separate Batteries?

Yes, you will. As they are 4 bank battery chargers, you will get 4 separate charging cables.

Do They Work if I Connect Them to the Generator to Charge My Rv Battery?

Yes, they work well if your generator produces enough power output. This is a helpful method when you’re outdoors for camping.

Can I Use It to Start My Car Battery if It Dies?

No! They are battery chargers, not jump starters. You need to trickle charge the battery and try again. You need to use a jump starter to do that.

Conclusion

I Hope this buying guide can help you to decide which one will be great for you.

Once you get the best portable marine battery charger, you’ll overcome your frustration of charging your batteries in a rotation with a one/ two/ three bank charger.

The most important advantage you can get from this type of charger is they can take care of the individual needs of your marine batteries. This will enhance the lifespan of your batteries and save your money as you don’t need to buy batteries frequently.

So hurry! Get the right one for your batteries and enjoy your trip.

Related Posts:

• Can I Trickle Charge a Battery Without Disconnecting It
• 3 Bank Marine Battery Chargers – How to Choose It