Marine Battery Chargers

If you drive a boat or own one, you will certainly know the frustration of a dying battery. Batteries that do not have enough power to start the engine will need a battery charger that can provide a good amount of amps to your battery that it has lost during the time it was not used. The performance of a marine battery does not solely depend on the brand but also the features of the charger. Hence, having a high-performance marine battery charger is as essential as having a powerful, high-quality battery.  

Due to a vast variety of marine battery chargers available in the market, it can get quite overwhelming in selecting the right one for your marine battery. To save you some time, we’ve done the research work and compiled a list of top marine battery chargers that you can rely on.

Before going to the list, here are some things that you should consider before buying a marine battery charger:


Get a charger that delivers the same voltage required by your battery. Most marine batteries are of 12V. Another thing to remember is connecting multiple batteries in parallel not series. Charging multiple marine batteries in series can cause a reduction in battery life due to unbalanced charge cycles.

Battery type

Before getting a battery charger, make sure you are familiar with the type and specs of your marine battery. The things to see in the battery is amp per hour, input voltage, and type. After you know these things well, it will be quite easy for you to get the right marine battery charger for your battery.


Opt for a marine battery charger that is capable of providing protection against water damage and other hazards like overheat, over voltage etc. Chargers with epoxy-filled construction are reliable and highly recommended. It would be a plus point if the charger is in compliance with safety features like ABYC safety standards.

Here is the list of best marine chargers available in the market:

Where to Buy
ProMariner 43012 ProSport 12 12-Amp 2-Bank Battery Charger
VMAX 15Amp 7-Stage 12-Volt Microprocessor Controlled Fully Automatic
BMK 12V 5A Smart Battery Charger
NOCO Genius G750 6V/12V 750mA Advanced Battery Trickle Charger Maintainer
Ampeak 2/8/15A 12V Smart Battery Charger/Maintainer
MICTUNING MULTI-STAGE Smart Fully Automatic Battery Float Charger / Maintainer


1. ProMariner 43012 ProSport 12 12-Amp 2-Bank Battery Charger

ProMariner 43012 is a 12 Amp, dual bank on-board waterproof marine battery charger that delivers high-performance and fast charging. It is equipped with distributed on-demand technology that efficiently distributes the charge amongst all the batteries according to their need. It also tells if there is any fault in batteries, with the help of indicating system.

Its compact, rugged, and lightweight design makes it portable enough to be carried without any problem. In short, ProMariner 43012 ProSport 12 is one of the best chargers for marine batteries available currently in the market.

2. VMAX 15Amp 7-Stage 12-Volt Microprocessor Controlled Fully Automatic “Smart” Battery Charger/Tender/ Maintainer

VMAX is a 7-stage 15 Amps smart charger for any 12 volt AGM, Gel, SLA, Wet (FLA) batteries. If you have a lead-acid battery, it can charge and maintain it from 40Ah-300Ah. It also features 13.8V of float voltage with pulse feature. The estimated time it takes to charge a marine battery ranges from 4 to 15 hours (capable of charging up to 300AH batteries in 24 hours).

3. BMK 12V 5A Smart Battery Charger

BMK is a 4-stage smart battery charger that can efficiently charge a car, lawn mower, and boat’s battery. It features fully automatic function that consists of 4 stages i.e. 25%, 50%, 75%, and 100% to indicate the quantity of electricity and monitor the whole charging progress. One of the best things about this smart battery charger is that it automatically recognizes when the battery is fully charged and stops.

If you are looking for a portable charger that can charge various batteries, BMK smart battery charger is a great option to consider.

4. NOCO Genius G750 6V/12V 750mA Advanced Battery Trickle Charger Maintainer

NOCO Genius G760 is a 2-in-one i.e. a charger and a maintainer. Its advanced functionality maintains the charge in the battery and extends its life so you can store it for a long-term without destroying it. Also, it works great in charging all the batteries up to 30 amp-hours. It is compatible with all types of 6-volt and 12-volt lead-acid batteries including Wet, Gel, AGM or any common marine battery.

It is spark-proof and equipped with reverse polarity protection. It also comes with battery clamps with integrated eyelets and a 5-year warranty.

5. Ampeak 2/8/15A 12V Smart Battery Charger/Maintainer

Ampeak is a 12V smart battery charger and maintainer that can be plugged in with your boat’s battery and provide fully automatic high-frequency charging. It is smart enough to choose the charging rate manually according to the type of your battery. It features an excellent mode: winter charging mode that is designed for winter weather conditions to sustain longer battery life and ensure perfect charging every time.

It is equipped with a built-in multiprocessor that takes all the smart decisions for added precision, safety, and enhanced battery life. With Ampeak smart battery charger, you don’t need to worry about problems like overheat, over voltage, overtime charging, short circuit, or reverse polarity. Another thing that adds into to its amazing functionality is the advanced LED display that makes it easy to keep track of charging status, charging current, voltage, battery type, and error information.

6. MICTUNING MULTI-STAGE Smart Fully Automatic Battery Float Charger / Maintainer

Mictuning is another fully automatic smart battery charger and maintainer that works great with lead-acid batteries. It is controlled by just a single button but offers 4 different modes. Once plugged in with your battery, it will automatically detect the battery volts and output’s desired charging current then switch to trickle charge after the battery reaches full capacity. It features all those protections that are essential for the battery to provide optimum high-quality performance for a long term.

It is also equipped with an LCD backlit digital screen that is full-sealed with IP65 waterproof outer case so you can easily keep track of readings even during a downpour, without worrying about it getting water damaged. The package includes a 2year warranty, 1 smart battery charger, 1 ring terminal with fuse, 1 alligator clamp, and a manual.

Final Verdict

You should always keep a marine battery charger when going for a cruise in your boat. Latest marine battery chargers are equipped with smart technology that makes it much easier for you to charge your battery. The ones we listed above are the best in the market because of their performance and capability; you can get the one that perfectly aligns with your requirements. However, if you want high safety and more options, you can opt for a dual-functionality charger and maintainer like NOCO Genius G750. If you just want to charge your battery with a high-quality charger and don’t require a maintainer, you can go for ProMariner 43012 ProSport.