Best Deep Cycle Battery Chargers of 2020 – Ultimate Review

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If you own a deep cycle battery, you must also invest in a quality charger, since that is going to ensure that your battery stays top-notch and lasts long. These chargers are not universal, and a deep cycle battery has many minute details and requirements that must be considered. In this article, you will find the best deep cycle batteries in the market today.

Comparison Chart of the Best Deep Cycle Battery Chargers

PRODUCT DETAILS
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Battery Tender Plus 12V, 1.25A Battery Charger

  • Comes with proper storage voltage to eliminate leakage
  • The AC Power cord is 6 ft., which is quite convenient
  • Faster than any 3-amp charger
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NOCO Genius G15000

  • Recharges all types of batteries
  • Works with 12-volt and 24-volt lead-acid batteries
  • Equipped with advanced repair mode to protect from any damage
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LST 12V 5A

  • LED indicator to provide visual feedback
  • Best for the money
  • Trickle-free charger with detachable alligator clips
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Guest 2711A ChargePro On-Board Battery Charger

  • Best AGM Deep Cycle Battery Charger
  • 12V 10-amp battery charger that’s waterproof and shock-resistant
  • Reverse polarity system for increased safety
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ADPOW 5A 12V

  • Best marine deep cycle battery charger
  • The design is customized and quite lightweight and compact
  • Has a 7-stage intelligent charging process
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Schumacher SC1305 12V

  • Automatically controlled microprocessor
  • Best Schumacher Deep Cycle Battery Charger
  • Multi-stage charging facility for added battery life
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BMK 12V 5A Smart Battery Charger

  • Best 12V Deep Cycle Battery Charger
  • Short 4-stage smart charging
  • Can diagnose and detect faulty battery beforehand
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TECMATE OptiMATE 6 12V/24V

  • Best 24V Deep Cycle Battery Charger
  • Comes with an ampmatic change control to adjust the current
  • Voltage is adjustable according to the temperature
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SUNER POWER 12V

  • Unique charger which uses solar power to charge the batteries
  • Best solar deep cycle battery charger
  • Reverse protection feature that ensures safety
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TowerTop 2/8/15A 12V

  • Best 3 stage battery charger deep cycle
  • Controlled by a microprocessor
  • Charger equipped with LCD display
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Are All Deep Cycle Battery Chargers The Same?

No, not all battery chargers are the same. What may work for one battery may not have the right chemistry with another. This depends on a lot of factors, such as voltage and high capacity. Let’s go over some of the different types of deep cycle battery chargers which have unique features:

Automatic Charger 

Some battery chargers have better and more advanced features, such as smart technology. These automatic chargers disconnect the charger from the battery once it’s nearly full so that overcharging doesn’t occur. They also come with multiple security systems that help extend the battery’s life and protect it from any damage.

Multi-Voltage Charger 

Multi-voltage chargers are also available for those users who like to travel a lot and need a portable charger that will fit into any socket when visiting a foreign country.

Water-Proof Charger 

If your battery is exposed to a lot of harsh weather, you need a similar charger that is sturdy and weather-sealed. A waterproof charger is necessary for marine batteries as well, since they are exposed to a lot of water.

Multi-Bank Charger

There are also multi-bank chargers that allow you to charge a lot of batteries at once, and those are more powerful.

How to Choose a Deep Cycle Battery Charger

Let’s go over some of the most important considerations to make when purchasing a deep cycle battery charger so that you can look for these features in the reviews later on.

Environment

Not all batteries can be used indoors or outdoors. If you own an outdoor battery, then your charger must be strong enough to withstand the external elements that surround it. This includes rainstorms or hail, which can be quite harsh. If your charger is not fit for handling the changing climates, then it may not be good for your outdoor charger.

Size of the Battery

The size of the battery is measured in Amp-hours rather than kilos or dimensions. A huge, full-sized battery can hold up to 50 Amp-hours. In this case, a 10 Amp charger will take about 6 hours to charge a huge battery like this one, especially if it’s completely dead.

Equalizing

If you are looking for a charger that can make the battery last longer without it needing to be charged often, then the equalizing feature is necessary. This feature reverses the sulfation so that the battery’s plates are not damaged, and it works for a longer period of time than a standard battery.

Quick Take - The Best Deep Cycle Battery Chargers

Before you go any further, here are our top picks for the best deep cycle battery chargers: 


  1. Battery Tender Plus 12V, 1.25A Charger
  2. NOCO Genius G15000
  3. LST 12V 5A

Review of the Best Deep Cycle Battery Chargers

Let’s now dive into the detailed reviews of the best deep cycle battery chargers that you can find in the market.

Battery Tender Plus 12V, 1.25A Battery Charger

Pros

  • This charger comes with a 10-year warranty
  • Reverse polarity protection embedded for safety
  • Comes with two accessories: ring terminals and alligator clips
  • Helps manage the temperature and charges all batteries at 1.25 Amps
  • It is a smart battery, which makes its performance consistent and reliable

Cons

  • Alligator clips are small
  • The product is not durable
  • No green light to indicate that the battery is fully charged

What Recent Buyers Report

This is an excellent charger and works just as advertised. It is leakage and spill-proof and is quite responsive to huge loads. It is also 5 times faster than a standard battery charger and can withstand harsh climates such as cold weather. It is also easy to use and comes at a reasonable price.

Why it Stands Out to Us

One of the best features of this battery charger is the quick harness that comes along with it. This allows you to charge the battery in places where it is harder to reach, making it convenient. It also comes with the reverse polarity protection feature, which ensures the user’s safety.

Who Will Use This Most

This is an excellent and versatile charger since the harness is long and can move about in hard-to-reach places. This makes it ideal for charging lawnmowers, scooters, televisions, or cars. It is also a great option for motorcyclists as it is temperature compensated and spark-proof. Overall, it is quite handy.

Bottom Line

If you’re on the hunt for the best charger in the market, then this is the one for you. Not only is it super versatile and can work on almost anything, but it also provides value for your money and has exceptional safety features that make this charger the best overall charger for deep cycle batteries.

Runner-up:
 NOCO Genius G15000

NOCO Genius G15000 12V/24V 15 Amp Pro-Series Battery Charger and Maintainer

Pros

  • Optimized charging mode for extra safety of the user
  • Quite versatile when it comes to maintaining the batteries
  • Ability to work with all types of batteries makes it impressive
  • The design is compact and portable, making it easy to carry around
  • Plug and play design, with automatic smart technology to monitor the battery

Cons

  • Does not charge dead batteries
  • It is not weather-proof or sealed
  • In some units, there is an issue with the build of the product

What Recent Buyers Report

This is a great charger that maximizes the life of the battery, according to the users. It can use many accessories and is embedded with many impressive features such as the automatic battery monitoring system and spark-proof technology, which is efficient and ensures the safety of the user.

Why it Stands Out to Us

This battery charger is one of the best ones you can find in the market because of its phenomenal features that make it stand out from the rest. It can maintain and monitor all battery sizes, repairs desulfated batteries, comes at a portable size for easy carry, and has a smart charging port system.

Who Will Use This Most

This is an excellent battery charger that you can take with you on the go to charge all sorts of battery sizes. It is perfect for keeping most vehicles such as cars and motorcycles charged, and can be used in workshops, garages, and even at home. It also works with automotive, deep cycle, and marine batteries.

Bottom Line

If you’re looking for a battery charger that is easy to carry around and comes with smart technological advancements as well as impressive features, then this one will not disappoint you. Not only is it extremely powerful, but it is also super safe and user-friendly, making it the runner-up for deep cycle batteries.

Best for the Money:
 LST 12V 5A

Guest 2711A ChargePro On-Board Battery Charger 10A / 12V, 2 Bank, 120V Input

Pros

  • Wide-application and versatile use
  • It can extend the harness up to 10 feet
  • LED indicator gives detailed feedback of battery capacity
  • Lightweight and compact, making it easier for travel purposes
  • Comes with accumulator recovery feature, making it easy to charge safely

Cons

  • Not easy to setup
  • Charging takes up a lot of time
  • AC plug seems to be unreliable

What Recent Buyers Report

This is a compact and lightweight battery charger, but it is super powerful and efficient to use. It can bring back the battery from the dead and does not trickle or spill out, making it super safe to use, even on 6-volt batteries. It can revive old batteries and save you lots of money.

Why it Stands Out to Us

This battery consumes less energy but performs brilliantly. There is zero current release from the battery, and it is able to charge fully drained or dead 12V batteries and bring them back to life. It comes equipped with an intelligent microprocessor that also provides feedback on the battery capacity.

Who Will Use This Most​

This is an excellent battery charger to use if you are traveling or are on the go because it is lightweight and can save you a lot of hassle and time. Moreover, it is great for lawnmowers, tractors, cars, snowmobiles, boats, and so many more automobiles, making it super versatile.

Bottom Line

If you’re looking for a lightweight battery charger that comes with smart technology and provides excellent value for money, then this is the one for you. With its impressive high-quality features and performance, this is definitely a charger that will not disappoint or let you down.

Best AGM Deep Cycle Battery Charger:
 Guest 2711A ChargePro

Guest 2711A ChargePro On-Board Battery Charger 10A / 12V, 2 Bank, 120V Input

Pros

  • LED monitoring for battery fault detection1
  • Newer technology for increased performance
  • Reverse polarity built-in to provide security and protection
  • Reverse polarity built-in to provide security and protection
  • Individual sensing and control for each bank, so you can be updated about the battery’s progress

Cons

  • Only two years of warranty
  • No instruction manual with this product
  • Not a replacement for the older battery chargers

What Recent Buyers Report

This is an amazing battery charger that works well without battery tenders. It is also cheaper than purchasing a new battery and is super easy and breezy to install. It also helps clean off any of the sulfation on the battery and makes sure that there is no leakage for safety.

Why it Stands Out to Us

This is a great battery charger that comes with an LED display to indicate the status of the battery as it charges. It is also 100% waterproof and shock-resistant and comes with reverse polarity, which means that it can be used on rainy days without damaging the battery or causing any harm to the user.

Who Will Use This Most​

This amazing battery charger can be used for traveling, and the quality and build of this battery is designed to withstand the marine environment. The materials used provide durability and strength to the charger so that it can be used in harsher climates and longer periods of time.

Bottom Line

If you’re looking for the best AGM Deep Cycle charger in the market right now, then this is the one you should grab. It is powerful, durable, and delivers incredible performance. It is also secure and waterproof, so you do not have to worry about any damage or harm to yourself or the battery.

Best Marine Deep Cycle Battery Charger:
 ADPOW 5A 12V

ADPOW 5A 12V Automatic Smart Battery Charger Automotive Maintainer 7-Stages Trickle Charger for Deep Cycle Battery Car Marine Trolling Motor Boat Truck Lawn Mower RV AGM with Terminal Cleaning Brush

Pros

  • It is easy to use and set-up
  • Entire build is very lightweight and compact
  • Can re-condition dead batteries
  • Great security and protection from overheating
  • Quality of the charger is amazing and the materials used are durable

Cons

  • The float voltage is too high
  • Instruction manual is hard to understand
  • For some users, this unit did not detect bad batteries

What Recent Buyers Report

This battery charger is loved by many users because it is affordable and provides excellent value for the money. It not only works like a dream but also revives dead batteries, which helps you save a lot of money on buying new ones. It is also easy to use, and the clamps are sturdy. It is also portable.

Why it Stands Out to Us

The reason why this battery charger stands out in this list is because of its impeccable performance and its ability to bring back the dead batteries to life. It can also improve the performance of your battery and will increase its lifespan so you can use it for longer periods of time.

Who Will Use This Most

This battery charger is most commonly used for cars, trucks, boats, Ski-doos, SUVs, RVs, Jetskis, and so many more automobiles. It has a wide application and multi-purpose use, and it is excellent to grab it on the go as well. The versatility of this battery charger also adds as an extra bonus feature to this charger.

Bottom Line

The durability and build of this charger make it an excellent choice for marine batteries as it can withstand the tough climates and harsh weather conditions. So, if you’re on the lookout for the best battery charger to revive your marine battery, then this is the best one you can find in the market right now.

Best Schumacher Deep Cycle Battery Charger:
Schumacher SC1305 12V

Schumacher SC1305 12V Fully Automatic Battery Charger and 10/50A Engine Starter

Pros

  • Small and compact, making it easy to carry around
  • Easy to set-up and comes with impressive functions
  • Float mode monitoring equipped for optimum battery charging
  • Clips, wires and other accessories are made of good quality materials
  • Reverse hook-up protection adds the factor of protection and prevents damage

Cons

  • Battery clamps are small in size
  • Selector is initially confusing and hard to get a hold of
  • Instruction booklet is too long and confusing to understand

What Recent Buyers Report

Users found this charger to be lightweight and fool-proof. It performs brilliantly and can start your car in minutes, since it is a SmartCharger, and can fully charge the battery with a speed of up to 2 times more than a standard charger. It is a great product once you get the hang of its features.

Why it Stands Out to Us

The reason why this battery charger is so amazing is because of the unique high-tech qualities it has. It is designed for rugged use and is super durable. This means that it can withstand harsh conditions and be used for years without any damage being caused. It also has protective features so that you feel safe.

Who Will Use This Most

Since this product is designed for rugged use, users who require a sturdily built charger for their automobiles will find it the most useful. It is an amazing battery charger for deep cycle batteries as well and can be used on the go because it is strong but lightweight and compact.

Bottom Line

If you’re looking for a heavy-duty battery charger that not only performs impressively but is also lightweight and compact, then this is the one for you. It is reasonably priced and is also safe for use in rugged conditions. Overall, this battery charger will not let you down.

Best 12V Deep Cycle Battery Charger:
 BMK 12V 5A Smart Battery Charger

BMK 12V 5A Smart Battery Charger Portable Battery Maintainer with Detachable Alligator Rings Clips Fast Charging Waterproof Trickle Charger for Car Boat Lawn Mower Marine Sealed Lead Acid Battery

Pros

  • Lightweight and easy to carry around
  • Constant pulse current embedded to avoid overcharging
  • It is super versatile and can be used for many different vehicles
  • IP65 Waterproof build and constructed with high-quality materials
  • Multiple built-in protective systems to ensure the highest standard of safety

Cons

  • Is not able to identify void batteries
  • Higher average failure rate after some months of usage
  • There are some issues regarding how long this battery charger actually lasts

What Recent Buyers Report

This is one of the best battery chargers in terms of the price and the value of money that it offers. Not only is it cheap, but it is also made with high-quality materials and has multi-protection features that make it quite an impressive charger for multi-purpose usage.

Why it Stands Out to Us

For the price, this product has a ton of outstanding qualities and features. Some of them include reverse polarity protection, over-voltage, and over-current protection, constant pulse current, and much more. It is also waterproof and is designed for usage in harsh conditions, which makes it more convenient.

Who Will Use This Most

Since it is waterproof, it is specifically designed for usage on boat batteries. It works amazing even on the rainiest days, storms, etc. Moreover, it aims to extend your RV’s battery life and can recharge lawnmowers, electric tools, and other electric vehicles as well. It is also the best 12V deep cycle battery charger.

Bottom Line

If you’re looking for a quick and easy solution to revamp your battery and charge it in no time, then this is the one for you. It works in all sorts of weather conditions, has impeccable performance, and is built with several protective measures to ensure safety for yourself and the battery.

Best 24 Volt Deep Cycle Battery Charger:
TECMATE OptiMATE 6 12V/24V

TECMATE OptiMATE 6 12V/24V, TM-193, 8-step 12V 5A / 24V 2.5A sealed battery saving charger & maintainer

Pros

  • There is a 3-year warranty on this product
  • Can be used indoors or outdoors, making it versatile
  • Portable and lightweight, making it reliable for travel
  • Waterproof seal ensures that it works in the rain as well
  • Automatic safety feature where it shuts down if there is a short circuit

Cons

  • The product is not durable
  • Limited voltage acceptance
  • Instruction manual is indecipherable

What Recent Buyers Report

This battery charger charges the battery fast and accurately. It tests the batteries, charges, and maintains them, as well as desulfates them so that there is no risk of damage or harm. It is also built with great quality materials and comes with a useful 3-year warranty, making it quite an impressive charger.

Why it Stands Out to Us

This is a great versatile battery charger that can be either used for charging batteries, maintaining them or both. It can also perform well indoors or outdoors and is waterproof, which makes it easy to use in the rain. It is also smart and recognizes when the battery is sulfated, so it doesn’t overcharge it.

Who Will Use This Most

This 24-volt battery charger can be used on high performing starters and is excellent for deep cycle batteries which need temperature-controlled charging. Since it is designed for sensitive electronics, it ensures their safety and guarantees that it will charge them and maintain them accurately and properly.

Bottom Line

If you’ve got fragile or sensitive electronics or a deep cycle battery that charges using temperature controls, then this is the best one that will suit your needs. It is versatile and waterproof and promises to maintain and take care of your batteries, as well as bring the dead ones back to life.

Best Solar Deep Cycle Battery Charger:
SUNER POWER 12V

SUNER POWER 12V Solar Car Battery Charger & Maintainer - Portable 6W Solar Panel Trickle Charging Kit for Automotive, Motorcycle, Boat, Marine, RV, Trailer, Powersports, Snowmobile, etc.

Pros

  • Charges anywhere as it converts sun’s energy into electricity
  • Safe charger that not only charges but also maintains the batteries
  • It is durable and built with high-quality materials for added strength
  • Does not overcharge your battery and comes with reverse protection qualities
  • This is a plug-and-play battery charger which requires little to no maintenance

Cons

  • Can only be used outdoors
  • Does not charge huge appliances like fridges
  • You cannot really determine whether it is working or not

What Recent Buyers Report

This is an amazing product which works very well and is also environment-friendly. It not only charges the batteries but also maintains them. It is also built with solid construction to ensure durability and longevity. For the price of the product, the charger is completely phenomenal.

Why it Stands Out to Us

This solar-powered battery maintainer converts the light energy into electricity and generates an electric current that is used to charge the battery. It is highly efficient and comes with a built-in diode to prevent the battery from over-charging. It is also quick and easy to connect and disconnect.

Who Will Use This Most

This is an excellent battery charger for boats, RVs, trucks, motorcycles, marines, boats, and even farm equipment. This is also an amazing charger for deep cycle batteries. Overall, the high-quality features and the unique system allow this charger to be versatile and excel in performance.

Bottom Line

If you’re looking for something different, environmentally friendly, and also light on the pocket, then this is the charger for you. It utilizes the sun’s energy to maintain and charge your battery, and is great for traveling purposes as well, especially if you are riding around in an RV.

Best 3 Stage Battery Charger Deep Cycle:
TowerTop 2/8/15A 12V

2/8/15A 12V Smart Battery Charger/Maintainer Fully Automatic with Cable Clamps, Winter Mode

Pros

  • Winter charging mode for harsh weather conditions
  • Overheat and reverse polarity features for added security
  • LCD display shows the battery’s current status and performance
  • Durable build to ensure that it works in winters and colder climates
  • Multi-protection features to ensure that there is safety on each stage

Cons

  • Not so great for maintaining batteries
  • It is only 12V and is not applicable for 24V batteries
  • The battery clamps may be too small for standard batteries

What Recent Buyers Report

Many users adored this product, especially the mechanics and professionals, who admired the quality of the design and the charger’s performance. It is also well made and smart, which makes the user’s life easier. The durability of the design also adds to the longevity of the charger, as well as the added security features.

Why it Stands Out to Us

The reason why this product is mentioned on this list is because of its amazing features and supreme quality design. It is a high-quality charger that also operates as a maintainer and comes with multiple security features so that your battery is protected. It also comes with a specialized winter design to protect it from the colder weather.

Who Will Use This Most


This is quite a flexible and versatile charger that can be used in RVs, motorcycles, deep cycle batteries, ATVs, and snowmobiles. Moreover, this charger is also good for usage on vintage, antique or classic cars, and specialty cars, as its security features protect the battery at all costs.

Bottom Line

If you’re looking for a simple to use and easy to set up battery charger, then this is the one for you. Not only is it high in performance and capability, but it is also designed for harsh weather conditions and comes with security features to offer protection for you and the battery as well.

Types of Deep Cycle Battery Chargers

Now that you’ve gone over the reviews, let’s take a look at some of the most common type of deep cycle battery chargers that you will find in the market. This will help you decide which one is more suitable for you and which features are more important for you to consider for your battery.

Standard Battery Charger

The first one is the standard battery charger. These charge the battery until it’s nearly full, and because they are so simple, they have the danger of overcharging attached to them.

Advanced Deep Cycle Chargers

These chargers monitor the level of energy inside the battery. It is able to recognize when the battery is about 80% or 90% full and then drops the energy level automatically to prevent it from overcharging. They also come with more advanced features such as multi-protection safety features, so as to prevent the battery from being damaged. Deep cycle battery chargers, on the other hand, can charge a battery quickly to 80% discharge.

Automatic Chargers 

These chargers can switch to float-mode, by automatically charging the battery whenever it is required. However, they cannot be used for a longer period of time, as they are not durable.

Conclusion

Now that you have gone over the most sought-after battery chargers in the market getting one should not be such a big hassle. Hopefully, there won’t be an issue with purchasing a deep cycle battery charger now, and that you found this guide helpful and informative.

People Also Ask

If you still have any ambiguities or concerns regarding deep cycle battery chargers, then you can refer to this portion down below, which will clear out some of your pressing concerns. The frequently asked questions are listed below, with answers for all of them:

Do Deep Cycle Batteries Need Special Charger?

Automatic battery chargers are the best ones for deep cycle batteries since they can adjust settings automatically, and help the battery to stay in shape without corroding or getting damaged. They can also be changed and stop the battery from overcharging, which is an essential requirement for battery chargers.

Can You Use a Regular Battery Charger on a Deep Cycle Battery?

Yes, a regular battery charger can be used on a deep cycle battery. A deep cycle battery charger isn’t that different than a regular one, except where deep cycle battery chargers give small amounts of energy for longer periods of time, whereas regular ones do the opposite.

How Long Does It Take to Charge a Deep Cycle Battery?

This completely depends on the size of the deep cycle battery, which is measured in amp-hours. A standard deep cycle battery charger may have 80 or more-amp hours of storage capacity. If you charge a deep cycle battery at 2 amps at the discharged state, it will take a few days or 48 hours.

What Amp Should I Charge my Deep Cycle Battery?

If you want faster results, then you should charge your deep cycle battery charger at a faster rate, such as 6-amp or 10-amps. However, in order to get the perfect amp, you must also check the battery specifications for the proper charging rate as the size of the battery matters.

Can You Fast Charge a Deep Cycle Battery?

In some cases, such as when you are using a marine battery, you may need to fast charge the battery. You can do this by increasing the amp rate at which the battery is charging; however, this may cause a certain downside: decreasing the battery’s life and longevity.