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Top 10 Best Deep Cycle Battery Chargers For All Budgets In 2020 Review

Ever come back to your car or bike and have a dead battery? Just because you have a dead battery, it doesn’t mean you need to buy a new one.

As your batteries age, they will lose their charge slowly over time. The Best Deep Cycle Battery Charger will keep your battery topped up and your vehicle ready to roll at all times.

In this review, we will go through review our top-10 favorite deep cycle battery chargers. Let’s see which one deep has charged its way to the top spot!

So, let’s get straight to it, starting with our…

Best Deep Cycle Battery Chargers

Top 10 Best Deep Cycle Battery Charger On The Market Reviews

ProductsBattery VoltageBattery TypeMax Power OutputPrice PointRating
Battery Voltage
12V or 24V
Battery Type
Lithium and Sealed Lead-Acid
Max Power Output
5 amps
Price Point
$$$
4.4 out of 5 stars (4.4 / 5)
Battery Voltage
12V
Battery Type
Sealed Lead-Acid
Max Power Output
5 amps
Price Point
$
4.4 out of 5 stars (4.4 / 5)
Battery Voltage
12V
Battery Type
Flooded and Sealed Lead-Acid
Max Power Output
1.25 amps
Price Point
$$
4.7 out of 5 stars (4.7 / 5)
Battery Voltage
6V or 12V
Battery Type
Flooded and Sealed Lead-Acid
Max Power Output
1.2 amps
Price Point
$
4.3 out of 5 stars (4.3 / 5)
Battery Voltage
12V
Battery Type
Flooded and Sealed Lead-Acid
Max Power Output
1.5 amps
Price Point
$
4.6 out of 5 stars (4.6 / 5)
Battery Voltage
12V
Battery Type
Flooded and Sealed Lead-Acid
Max Power Output
12 amps
Price Point
$$
4.6 out of 5 stars (4.6 / 5)
Battery Voltage
12V or 24V
Battery Type
Flooded and Sealed Lead-Acid
Max Power Output
5 amps
Price Point
$$$
4.7 out of 5 stars (4.7 / 5)
Battery Voltage
12V
Battery Type
Flooded and Sealed Lead-Acid
Max Power Output
1.5 amps
Price Point
$
4.5 out of 5 stars (4.5 / 5)
Battery Voltage
12V
Battery Type
Flooded and Sealed Lead-Acid
Max Power Output
4.3 amps
Price Point
$$
4.7 out of 5 stars (4.7 / 5)
Battery Voltage
6V or 12V
Battery Type
Flooded and Sealed Lead-Acid
Max Power Output
4 amps
Price Point
$$$
4.3 out of 5 stars (4.3 / 5)

1 NOCO Genius G15000 12V/24V 15 Amp Pro-Series Battery Charger and Maintainer – Best Deep Cycle Battery Charger for Battery Restoration

The first charger up is the NOCO Genius G15000. It is made to be waterproof, dust, and shockproof while featuring a plug and play type design that features overcharge protection.

On the durable IP44 case, you will notice indicators letting you switch between charging modes. These indicators will also help you diagnose any battery problems you may have.

Easy to use…

If the orange standby light is lit up, it indicates that the battery has too little amps for the charger to detect it. Or you might see a solid red light letting you know you have a polarity problem, for example.

Once you are connected, this charger will provide up to 15 amps to 12V batteries and 7.5 amps to 24V batteries. When it has done its job, and your battery has sufficient charge, it will automatically stop.

Versatile…

This charger has multiple charging modes that give it the ability to charge various types of both 12V and 24V batteries automatically.

You have a repair mode for 12V batteries that works exceptionally well at restoring lost battery capacity. There are charging modes specifically for both lithium and AGM batteries as well.

Quick as a flash…

If you need to power a tire pump, for example, you can put the charger in supply mode. There is even a ‘Jump Charge’ mode that rapidly charges a battery in five-minute cycles.

No matter the charging mode you choose, you will have reverse polarity protection. The clamps have also been designed to prevent sparks.


NOCO Genius G15000

Our rating:4.4 out of 5 stars (4.4 / 5)

Pros

  • Can charge lithium-ion or lead-acid batteries up to 400 amp-hours.
  • Choose between nine different charging settings.
  • Shockproof case only measures 14.1 inches long from end to end.

Cons

  • The cables could be more durable.

2 LST 12V 5A Automatic Battery Charger – Best Multi Purpose Deep Cycle Battery Charger

The next high quality Deep Cycle Battery Charger in our review is from LeicesterCN. This trickle type charger provides 5 amps at 12V and works with numerous lead-acid battery types.

A great all-rounder…

It is meant to maintain, charge, and help restore old batteries through a seven-stage process. Located on the small display are indicators that will show you your battery’s current status and charging state.

You can charge a motorcycle battery in as little as three hours or an RV battery in 20 hours. This will vary depending on the amp-hours of your battery you are charging, though.

Safety first…

LeicesterCN has integrated quite a few safety features into this charger. The LST has short circuit, over-current, and overload protection, just to name a few. It includes a set of spark-proof alligator clamps that grip well. Located on the included terminal harness, you will even find integrated 10-amp fuses.

All of the included cables have a plug and play design. You can leave the terminal harness connected to your battery at all times this way. When full, simply unplug them.



Our rating:4.4 out of 5 stars (4.4 / 5)

Pros

  • Can charge ATV, boat, or motorcycle batteries.
  • The 7-step indicator supplies a good amount of diagnostic information.
  • Comes with a 12-month warranty and 24/7 after-sales service.

Cons

  • It isn’t the fastest charger out there.

3 Battery Tender Plus Charger and Maintainer – Safest Deep Cycle Battery Charger

Deltran’s Battery Tender Plus Charger and Maintainer is compatible with 12V lead-acid, gel, and AGM batteries. It provides a slow but consistent 1.25 amps of power to maintain your battery.

To get this charger up and running, all you have to do is plug it into a nearby outlet and connect the alligator clips to your battery. As it runs, the charger will detect the ambient temperature and adjust accordingly to provide optimal charging voltage.

Laters of protection…

While it’s operating, you will also notice either a red or green light lit up on the front of the charger. If the red light is on, it indicates that it is charging.

Once your battery is full, the light will turn to green, and the charger will go into a battery maintaining mode. This charger features overcharge, polarity, and shock protection.

Multiple-fuse protection…

While some deep cycle battery chargers come with only one integrated set of fuses for protection, this charger provides two. You will have a 7.5-amp fuse located on the clamp wiring as well as one on the terminal harness. Since these fuses are only 7.5 amps, they aren’t exactly robust. The plastic cases they are enclosed in are also very bendable.

Whenever you are using this Battery Tender charger, you need to make sure that it does not get wet. This charger’s housing is not in any way water-resistant.



Our rating:4.7 out of 5 stars (4.7 / 5)

Pros

  • Small and can fit into the palm of your hand.
  • Both the clamps and terminals are protected with inline fuses.

Cons

  • The clamps could grip tighter.
  • The fuse enclosure could be more durable.

4 BLACK+DECKER BM3B Fully Automatic – Best Value for the Money Deep Cycle Battery Charger

If you are in the market for a lightweight charger, then look no further. The BLACK+DECKER™ BM3B weighs in at just over one pound, making it super portable.

This charger has a very durable case but does need to be kept away from moisture. Fortunately, it has two mounting holes on the case, making it easy to secure somewhere dry.

Connectivity and safety…

The BM3B can automatically charge 6V or 12V batteries at the flip of a switch. The BM3B also provides 1.2 amps and has integrated circuit protection that guards against reverse polarity, overcharging, and short circuits.

You can connect this deep cycle charger to your battery in one of two ways. BLACK+DECKER has included both a terminal harness and alligator clips. With two options on hand, you will be able to start charging in no time at all. Once you determine which way you want to connect to your battery, simply plug the 12V DC plug into the wall, and you are good to go.

Superb value…

The BLACK+DECKER BM3B is one of the cheapest chargers in the roundup, but you wouldn’t know it from how well it performs.



Our rating:4.3 out of 5 stars (4.3 / 5)

Pros

  • Very well priced.
  • You can charge 6V or 12V batteries.
  • Comes with two different types of battery connections.

Cons

  • Not waterproof or water-resistant.

5 BatteryMINDer 1500 – Best Deep Cycle Battery Charger for Reconditioning Old Batteries

BatteryMINDer has integrated its SmarTECHnology™ Plug ‘n Run system into this 1.5-amp charger.

This allows the charger to work as a high-frequency pulse desulfator to help recondition old batteries. Even on newer batteries, this technology allows for an increased battery life of up to four additional years. It will analyze a battery before charging it and categorize it in one of seven ways.

Intelligent design…

Once your battery is full, it will switch to a maintenance mode to regulate your battery level and make sure it is constant without overcharging.

You can plug this deep cycle charger into pretty much any power outlet in the world! The internal circuitry allows it to run off 90 to 240-volt power outlets that have a frequency between 47-64 hertz.

Highly expandable and compatible…

Once you have it connected to a power outlet, simply plug in the removable alligator clips and attach them to your battery. In case you have a polarity problem, the charger will let you notify you via the indicator lights on the housing.

Next to the plug and play adapter for the alligator clips, you will notice another empty plug. BatteryMINDer has optional adapters, allowing you to connect up to four batteries at once to this charger. If you can find a compatible plug, you can also create your own adapter out of 18-gauge wire.



Our rating:4.6 out of 5 stars (4.6 / 5)

Pros

  • Operates in temperatures ranging from -4°F to 122°F.
  • Can connect and charge up to four batteries at once.
  • Can be powered through 90 to 240-volt outlets.

Cons

  • To charge more than a single battery at a time, you need to purchase an adapter.

6 Optima Digital 400 – Most User Friendly Deep Cycle Battery Charger

The Optima Digital 400 can recover batteries that have as low as 1.25 amps of power in them, but is it the best quality Deep Cycle Battery Charger you can buy?

This reasonably priced charger provides a power output of up to four amps. It is made to charge 12V lead-acid batteries, including high-performance AGM and flooded ones.

The Optima 400 includes six-foot-long AC and DC cables. You will also have removable alligator clips that have inline fuses on-hand as well.

User-friendly controls and mountability…

When you plug the Optima 400 in and connect it to a battery, it won’t start charging automatically. If you look at the LCD, you will see that it will perform a quick test of the battery and display your battery’s current voltage. Next, it will prompt you to choose the battery type that the charger is connected to. It will then analyze the batter further and begin its multi-stage charging process.

All you need to know…

Above the LCD, you will notice numbers and lettering that resemble a fuel gauge. As the battery charges, green lights will illuminate and represent the percentage of charge your battery has. When you are done charging your battery, you can neatly wrap the cords around the casing of the charger.

This charger includes a quick-release wall mount as well. Like some of the other chargers we have looked at, this one isn’t waterproof.



Our rating:4.6 out of 5 stars (4.6 / 5)

Pros

  • LCD will show you the current status of your battery.
  • Easy to read gas gauge type meter.
  • Can charge high-performance AGM batteries.

Cons

  • The mounting bracket doesn’t provide a very secure connection.

7 TECMATE OptiMATE 6 – Most Versatile Deep Cycle Battery Charger

According to TECMATE, this next charger is “The world’s most advanced fully-automatic 12V battery charger!”

To begin, this charger provides up to five amps of charging power. This is possible due to TECMATE’s Ampmatic charging system. The Ampmatic system adjusts the charging current to suit three to 240-amp hour AGM, gel, and standard batteries. It will adjust the charging speed based on your battery’s specific needs.

That’s not all…

The OptiMate 6 can also be a valuable tool even when connected to brand new batteries! It can balance the cell voltage of a new battery and increase its overall performance. There are a total of nine different charging modes to make sure your battery is charged and as healthy as possible.

You can see the current charging mode via a variety of indicators located on the case. This case is also waterproof and can be used in the rain without a problem.

Short-circuit protection…

TECMATE has included removable clamps as well as terminal rings with this charger. The terminal rings have an integrated 15-amp fuse for added safety.

This charger is another one that can be powered by 100 to 240-volt outlets and includes short-circuit protection as well.



Our rating:4.7 out of 5 stars (4.7 / 5)

Pros

  • Nine different charging modes that output up to five amps.
  • Can be used both indoors or outdoors and is waterproof.
  • Comes with a wall-mount and six feet of AC cable.

Cons

  • The spring-loaded clips could grip better.

8 Schumacher SE-1-12S – Best Automatic Deep Cycle Battery Charger

The Schumacher SE-1-12S specializes in maintaining batteries that have been left in storage. It is compatible with 6V or 12V batteries and provides up to 1.5 amps. The internal circuitry incorporates a microprocessor that will adjust the output depending on your batteries needs.

You will notice two lights that will either pulse to let you know that your battery is fully charged or to notify you of a polarity problem. It is very easy to use.

But there’s a catch…

This isn’t the smallest or most streamlined charger out there. It is made from molded plastic that has a rectangular shape to it. We wouldn’t consider this the easiest charger to carry around with you either.

Schumacher has included a wall mount for this charger. This mount consists of a simple l-shaped bracket and does a good job of securing the SE1-12S to the wall.

Some minor functionality issues…

Before mounting this to the wall, make sure you have a compatible power outlet nearby.

Another thing to note is that it uses non-removable terminals for connecting to a battery. These terminals are not long, and you might find yourself needing to get extensions.



Our rating:4.5 out of 5 stars (4.5 / 5)

Pros

  • Integrated microprocessor manages amperage output.
  • Extremely easy to use.

Cons

  • The molded plastic case is clunky.
  • You cannot remove the terminal harness.

9 CTEK (56-958) MUS 4.3 POLAR – Best Deep Cycle Battery Charger for Extreme Climates

The next deep cycle battery charger we look at is made for use in extreme climates. CTEK’s 56-958 model charger will provide up to 4.8 amps and charge all types of 12V lead-acid batteries.

Plenty of options…

The 56-958 has an integrated microprocessor that utilizes an 8-step charging process. You can power this deep cycle battery charger via any 100 to 120V outlet. It also offers multiple charging modes. If you happen to be in a cold climate, you will want to stick the charger into Snowflake mode, for example.

There are also other modes like Recond and Float. Float mode can recondition your battery while Recond mode works well at recovering extremely discharged batteries.

Weather-proof and durable…

Since this deep cycle battery charger can withstand temperatures as low as -22F, you might be using it in snow. The very heavy-duty case of this charger is IP65 rated. You could even take a hose and spray this charger without having to worry about water damage. It is completely dustproof as well!

Like other chargers, it comes with both o-shaped terminals as well as some beefy clamps for connecting to your battery. When we connected the o-shaped terminal connections to our battery, they did seem a bit weak, in our opinion. The metal used is not that thick and can be bent rather easily.



Our rating:4.7 out of 5 stars (4.7 / 5)

Pros

  • Can charge all 1.2 to 110-amp hour lead-acid batteries.
  • Comes with a 5-year warranty.
  • Can be used in all weather conditions.

Cons

  • The metal o-shaped battery terminals could be stiffer.

10 Battery Tender 5-Bank Charger – Best Multi Bank Deep Cycle Battery Charger

The last charger we look at can charge up to five lithium or lead-acid batteries simultaneously! With the ability to charge so many batteries at the same time, you will notice this product doesn’t come cheaply.

Five banks of charging capacity…

This 5-bank charger is straightforward to use. Located on the front of it, you will notice it has two buttons as well as a lit-up status indicator. The top button lets you adjust between 6V or 12V batteries. Just below that button, you will see another one that lets you change between lithium or standard battery types.

Whenever you connect a battery to charge, all you have to do is select the appropriate settings for that battery, and the charger will do the rest. It supplies up to four amps of power per channel.

Overcharge and circuit protection…

When your batteries are charging, you will notice a yellow indicator above each terminal. Once your battery is full, the indicator will turn green, letting you know that battery is in float mode.

Battery Tender’s 5-bank charger features overcharge and short circuit protection. It comes with five sets of terminal adapters as well as five sets of clamps that are 7.5 feet long.

Safety in mind…

No matter the type of connection you go with, the Battery Tender will not output power until the cables are connected correctly. This eliminates any chance of the clamps sparking, for example.



Our rating:4.3 out of 5 stars (4.3 / 5)

Pros

  • Spark proof charging!
  • You can charge up to five batteries at once.
  • Included cables are long and easy to use.

Cons

  • Expensive.

Best Deep Cycle Battery Charger Buying Guide

Best Deep Cycle Battery Chargers Review

Battery Types

You will typically find sealed lead-acid and lithium type deep cycle batteries. There are also different types of lead-acid batteries like AGM and gel that are sealed and also flooded.

AGM batteries are often found on vehicles that have a push-button type starting mechanism. They perform differently than a standard lead-acid battery and might not work with just any old charger. All deep cycle batteries are measured in amp-hours. For example, if your battery is rated at 100Ah, it will provide 100 amps of continuous current over an hour.

Over time, your deep cycle battery will lose charge. If the battery gets too low, you might not be able to recover it.

Functionality

The deep cycle battery chargers we have looked at are great at maintaining the charge of your battery when not in use or are in storage. They can also help recondition an old battery that doesn’t have many amps in it to perform better.

However, not every charger is as powerful as another. You will notice that some chargers can output four amps of power while some might only be able to output 1.2 amps. An integrated microprocessor will often decide the amount of power that the charger sends out. Some chargers have microprocessors that provide up to a 9-step charging process.

Multi-step chargers typically provide better results when it comes to recovering older batteries. That doesn’t mean a simple automatic two-step charge won’t perform just as well, but it will be limited.

Durability

You also need to consider the environment that you are charging in. While one charger might feature an IP65 rated case, it doesn’t mean they all do.

Manufacturers will typically label the charger’s recommended operating conditions. Since you are dealing with electricity, we strongly advise you to follow them. If your charger gets too hot, cold, or wet, and you try to use it, you can cause damage to it and potentially hurt yourself.

Connectivity and Power

All of the chargers in this roundup offer a couple of ways to connect to your battery. You most commonly will have clamp-style connectors that will grab on to your battery’s posts. You will also usually have a terminal harness connection. This type of connection can be left attached to your battery even when you aren’t charging it.

To power the charger, you need to have a wall outlet handy. If you are using a portable charger, this shouldn’t be a problem since most come with a few feet of cable. If you’re using a charger that needs to be mounted on a wall, though, you need to make sure it is within reach of both the battery and the wall outlet.

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Back to battery chargers…

So, what is the Best Deep Cycle Battery Charger

The winner of our roundup is the…

TECMATE Optimate 6

We looked at some great chargers, but the overall versatility of the Optimate 6 made it a clear choice for us. TECMATE claims that the Optimate 6 is “The world’s most advanced fully-automatic 12V battery charger,” and we don’t doubt it. No matter if you have a flooded or sealed lead-acid battery, you can rest assured the Optimate 6 will charge it.

This 9-step multifunctional charger is easy to set up and use. The Optimate 6’s case is also very durable and even waterproof. This allows you to use it outdoors, no matter the weather conditions. It even comes with a generous 3-year warranty on hand in case anything unfortunate might occur!

Happy charging.

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