The 10 Best Marine Battery Charger in 2023 – Complete Review

Last Updated on March 1, 2023

Best Marine Battery Charger

People like to go on the water from a long time ago. Whether you are a traveler or a fisherman or a boatman, you need a good battery that will help you. To stay for a longer time on the water, you need to quality charge to power up your battery very well.

For this, you must have to choose the best marine battery charger which will provide your battery a longer life. Here we are going to discuss ten best marine battery chargers you need.

Quick Answer – Marine Battery Charger

Reviews of the Best Marine Battery Charger

For staying a more extended period on the water, there is no doubt to carry a good battery that is charged fully. To charge your battery very well and to use for a long time in the water, you must have to choose the best battery charger from the market.

Here, we’ve provided some review of the best marine batteries that found in the online market. We hope, this best marine battery charger article will be helpful to you to buy the best marine battery charger and make your journey to the water joyous.

1. NOCO Genius G4 6V/12V 4.4 A 4-Bank Smart Battery Charge

Best Marine Battery ChargerThere are so many battery chargers in the market. But NOCO Genius is one of the best chargers among them. This is the safest and most advanced of the chargers found in the market.

The NOCO Genius G4 6V/12V 4.4A 4-Bank is ultra reliable and smart battery charger for your vehicle. This contains a unique design.

This is designed to charge multiple 6-volt and 12-volt lead-acid and lithium-ion batteries up to 40amp/hours. This charger includes an ultra-safe design which is featured by spark-proof technology.

The NOCO Genius G4 6V also has reverses polarity and overcharge protection. You can charge safely your automotive, marine, RV, power sport, lawn & garden batteries using this charger.

AGM and deep-cycle batteries also can be charged using this. This charger actively monitors the health of the battery as well as repairs the discharged and sulfated batteries to improve battery life.

Not only your marine device but also your other vehicles like a motorcycle, snowmobile, ATV, personal watercraft and others can be charged using this charger.


  • Designed to charge 6-volt and 12-volt lead-acid and lithium-ion batteries
  • Ultra-safe design with spark-proof technology
  • Monitors the battery health and repairs discharged and sulfated batteries
  • Lightweight, Only 2.7 pounds
  • 5 years warranty


  • Sometimes high pitch sound may come out
  • Can’t charge fully drained battery


2. NOCO Genius GENM3 12 Amp 3-Bank Battery Charger

Best Marine Battery ChargerThe Gen Mini On-board battery chargers are one of the best chargers in the market. This is a rugged and compact waterproof charger which can be used for 12 Volts lead-acid batteries.

It has a five years warranty. This charger contains 12 amp smart on-board charging system for 12- volt batteries where each bank has 4 amp load.

You can charge all types of lead-acid batteries from 20-120ah including wet, gel, MF and AGM and the charger maintains all of this.  This charger is safe, and anyone can use it.

The Gen Mini On-board battery chargers never generate sparks, and it prevents reverse battery hookup, short circuit, overheat, open circuit, overflow of electricity and never charge the battery more than its category.

Moreover, this charger contains an advanced recovery mode which can repair the damaged areas of the battery as a result; you’ll get a longer, healthier battery life.

It also recovers the discharged and sulfated batteries with pulse charging deeply. To charge battery 2X faster than any other traditional battery chargers, this charger features rapid charging technology. Its design is very lightweight, and it has a compact design.


  • 12 amp (4amp per bank) onboard battery charger for 12-volt batteries
  • Rapid charging technology to charge batteries 2x faster
  • Advanced recovery mode to repair damaged areas
  • This charger is waterproof
  • Very safe to use
  • 5 years warranty


  • A bit heavy (8.6 pounds) and massive in dimension


3. Minn Kota On-Board Digital Charger

Best Marine Battery ChargerMinn Kota on-board digital charger is another one of the best marine chargers. Its impressive features made it best one. It has several charging banks. Each bank contains 10AMPS.

In two banks charger, you’ll get a total output of 20 AMPS. Its recovery time is 4D6 hours. This is designed using a Digitally Controlled Microprocessor that provides its users to stay a long time on the water.

In three banks, you’ll get a total output of  30 AMPS. This is compatible with flooded lead-acid battery and AGM battery. On-shore AC is the power source of this charger.

The Minn Kota on-board digital charger also has a digitally controlled microprocessor design that protects batteries and provides its users to stay a long time on the water.

And in the 4 banks charger, you’ll get a total output of 40 AMPS.  Most of the features are same as the previous two models. In this model, recovery time is 10D12 hours which is higher than the last two.


  • Digitally controlled.
  • Several charging bank options with different output
  • Each bank contains 10 AMPS
  • A Digitally-controlled microprocessor system
  • Lead-acid battery


  • A bit heavy (20 pounds) and a bit larger
  • No information about warranty


4. ProMariner 43012 ProSport 12 Amp Battery Charger

Best Marine Battery ChargerThis ProMariner 43012 is another best one chargers of the market. This company is a pioneer of onboard battery charger productivity for marine items. It is a two bank charger.

In bank 1, you can charge Cranking Battery, and in Bank 2, you can charge House Battery (like Trolling Motor). Each bank is of 12 AMP. In every bank, there is a 12 volts battery.

It may be helpful to you by knowing it that if have multiple batteries which are connected in the series, you can charge both batteries together using this charger.

The ProMariner 43012 ProSport 12 Amp charger has an energy saving mode. Storage recondition mode is also available in this charger.

With the purchase, you are getting two years of warranty. It weighs only 5.9 pounds, and its dimension is 12 x 6 x 8.5 inches. It has built-in quality and safe to use.


  • Double bank charger
  • Both Cranking and House batteries can be charged
  • Storage recondition mode is available
  • This charger has an energy saving mode
  • 2 years warranty
  • Safe to use


  • This charger is not waterproof
  • No digital control


5. ChargePro On-Board Waterproof Battery Chargers

Best Marine Battery ChargerThe Chargepro On-Board battery chargers got a place on the top chart of best marine chargers found in the market for its some awesome features.

This is 12 volt 20 AMP onboard battery charger which has 2 banks in it. It has a built-in safety system. Reverse polarity, over current, voltage overflow, over temperature and ignition protection includes into this charger.

It has in-Line fuses which used for maximum DC wire protection. This charger is 100% waterproof (Ip67). ChargePro On-Board is shock resistant too for all kind of fresh and saltwater applications. In every bank of this charger, it has dedicated battery charging, sensing, and control inside.

You can easily read through the LED user display that indicates the status of each battery bank while this is in the charging process. You can use this charger for all 12 Volt flooded and AGM lead-acid batteries. Its warranty period is two years.


  • 2 banks 12 Volt 20 AMP onboard battery charger
  • In-Line fuses for maximum DC Wire protection
  • LED user display to monitor charging status
  • 100% waterproof & Shock resistant
  • For 12 volt flooded and AGM lead-acid batteries


  • Not for Lithium-Ion batteries


6. Minn Kota Precision On-Board Charger

Best Marine Battery ChargerMinn Kota Precision is another one of the best chargers found in the market. This is an On-Board charger which has several banks for charging batteries (Up to 4 banks).

This charger has an intuitive LED display to monitor the charging status. This charger is waterproof. This has shock and vibration resistant aluminum construction.

This marine battery charger passed the saltwater test. The charger is constructed using fully corrosion-resistant. It has full protection from short circuit, reverse polarity, arc, and ignition.

Minn Kota Precision On-Board Charger is FCC compliant and UL listed in marine standard 1236. In this charger, there has battery equalization for charging multiple batteries.

This product is a bit heavy. Its weight is 10 lbs. Its dimension is 9.25 x 10.5 x 3 inches. When an outlet is overloaded or a long extension cord used, its low line voltage compensation adjusts it by a drop in voltage input.

This charger is utilized using Automatic Temperature Compensation feature to adjust the temperature fluctuations preventing over or undercharging. This charger is backed up by three years replacement warranty.


  • Several banks for charging batteries
  • Intuitive LED display to monitor charging status
  • Full protection from short circuit, reverse polarity, arc, and ignition
  • Waterproof
  • Automatic Temperature Compensation
  • Three years replacement warranty


  • A bit heavy weighs 10 Pounds
  • No shock resistance


7. MinnKota MK-105P Portable Battery Charger

Best Marine Battery ChargerMinn Kota MK-105P is a portable marine battery charger. This company is providing service to electric boating motors for more than 75 years. And this model is one of the latest portable battery chargers.

You can stay a long time on the water by charging your battery using this charger. It has a unique molded-in handle design that makes the charger easier to transport.

This portable 12-volt battery charger can be used to charge electric motor batteries. Minn Kota MK-105P Portable Battery Charger has fully automatic two-stage charging opportunity in 5 AMPS per bank.

This charger contains smart and durable system protection to prevent short circuit and reverse polarity problems from improper connections. To charge easy and conveniently, there has LED indicator lights in it.

This item has three years warranty. This charger is finely designed, and its dimension is 8.2 x 8 x 6.9 inches. It is light to carry. Its weight is only 4.2 pounds.


  • Provides long-time charge capability
  • A unique molded-in handle design
  • Smart and durable system protection
  • Fully automatic two-stage charging capability with 5 amps per bank
  • Three years warranty


  • Can be used in smaller marine cycle battery
  • No information about water resistance


8. Schumacher SSC-1500A-CA Ship ‘N’ Shore 15 Amp Charger

Best Marine Battery ChargerThis is a 12V 15 amp fully automatic microprocessor controlled battery charger which can be used in batteries of automotive and marine. It has 12V auto voltage detection.

This charger can use 3 Amp for maintaining, 8 Amp for medium charging and 15 Amp for rapid charging. You can monitor this process in a digital display.

This charger contains a digital meter display which provides its users to watch the battery charge status and test results. A retractable handle for easy portability features this. You can easily diagnose its problems using its system test.

Schumacher SSC-1500A has electronic push-button control switches that help users to select between display mode, charge rate, and battery.

It has battery clamps, and these are rated at 75 Amp per clamp. This is only for use in 12 volts batteries. This charger is not compatible with WM-12 or EC-25 quick connect cables.


  • Fully automatic microprocessor controlled
  • 12 v auto voltage detection
  • Digital meter display
  • Electronic push button control switches
  • Five years limited warranty provided.


  • No information found about water resistance.


9. WEEGO JS12 Jump Starter 1400 Peak 400 Cranking Amps Pack

Best Marine Battery ChargerThis is another best marine chargers in the market. Weego Jump Starter JS12 can quickly and easily start 6.4L gas and 3.2L diesel engines which are used in cars, trucks, boats, motorcycles and more others.

To provide 1400 peak amps and 400 cracking amps power is guaranteed in this charger when you need it most. This charger offers a safe and worry-free charging operation, and anybody can use this.

On a single charge & 1000 charging cycles, there is up to 1-year standby power is provided by this.  It has standard jumper clamps and the battery pack including built-in circuitry protections.

WEEGO JS12 Jump Starter has some attracting features include. It has 100 lumens LED flashlight with strobe and SOS emergency light functions. There is a USB port too to charge phones, tablets speakers and any other portable USB devices.

It can power laptop and 12 V accessories. This also included a wall and car charger, 3 in 1 (micro, 30 pins, and lighting) USB cord and carrying case too. Besides, you will get excellent and reliable customer service from them.


  • Can charge 6.4 L gas and 3.2L diesel engines
  • 1400 peak amps and 400 cracking amps power
  • 100lumen LED flashlight and SOS emergency light functions
  • USB port for mobile phones, tablet, and other USB devices
  • It can charge 12V accessories


  • No water resistance
  • A lithium polymer battery is required to use this


10. BMK 12V 5A Smart Battery Charger

Best Marine Battery ChargerThis super smart battery charger has a fast charging car battery booster. Its DC output is 13.8V/5A; AC input is 100-240V, 1.5A 60/50Hz.

With 5A DC output current; this charger is suitable for charging batteries with 15-100Ah capacity. It has multi safety protection.

This is made of a great ABS pI65 100% waterproof, multi protect from short circuit, over voltage, over current, polarity reverse.

This is featured with a constant pulse current maintenance function which avoids overcharge and discharge. It provides highly reliable efficiency stable performance and longer service life because it is fully loaded and the burn-in test proved.

BMK 12V 5A Smart Battery Charger is a fully automatic boat battery charger, and it has 4 stage smart charging system. This 12V battery charger operated with 4 stages charging process using MCU controller.

It monitors the whole charging process and automatically stops while the battery is charged fully. There is a LED indicator in it to display the different battery status.

BMK battery maintainer charger is the excellent choice for la awn mower, boat, car, motorcycle or other electric vehicles and tools.


  • 12V battery charger with fast charging
  • 4 stages smart charging system
  • LED indicator to display charging difference
  • 100% waterproof
  • Very lightweight, only 1.75 pounds


  • Sometimes, indicator lights may not help
  • Gets hot after charging sometimes


Final Words

If you like and love to travel on the water with an engine boat, you must have to charge the battery of your boat very well. To stay a long time on the water and get the best uses of the cell of your boat, you must have to charge the battery with an excellent charger which is suitable for that. We hope, this review helped you to choose the best marine battery charger from the online market.


10 Best Marine Battery Charger


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