Best Deep Cycle Battery Chargers

Just like any other device with a standard battery, car batteries tend to lose charge. But when this happens, it doesn’t mean you have to buy a new one. You would rather choose to charge them with a deep cycle battery charger. The deep cycle battery charger keeps working by slowly providing power to your battery. It will keep charging until you can successfully start the engine of your car or motorcycle. You can save time and money by simply having the best deep cycle battery charger.

What to Consider Before Buying a Deep Cycle Battery Charger.

i. How long it takes to Charge

It’s difficult to discern the average charging time of a battery. It can be only determined by the type of the battery and the charger you are using. It can be a lengthy process to fully charge a battery. It takes between two to ten hours to fully charge a deep cycle battery. It may even take longer if you are using a smaller deep cycle battery charger.

ii. If it’s easy to use

Generally, it shouldn’t be difficult to hook up a battery charger. All it takes is to clamp on the negative and positive. You then plug the charger into the socket and let go. You may have to mess with settings beforehand on some chargers. Buying an automatic charger that can adjust to your deep cycle battery can save you time.

Types of Deep Cycle Battery Chargers

THE CHARGER

The gist of this battery charger is covered by its name. This is the most basic deep cycle battery charger that is capable of restoring and reviving your dead battery even if it is fully discharged. Its universal functionality makes it capable of providing the needed power to your battery. This type of deep cycle battery charger is the most common on the market.

THE RESTORER

The restorer works by breaking down contaminants built-in the battery and that’s why it’s the most expensive deep cycle battery charger on the market. Contaminants block the battery from receiving power. But the best and highly rated restorer is capable of clearing and restoring energy to your battery once again. It’s because of this feature that they are mostly used in professional mechanics.

THE MAINTAINER

This type of deep cycle battery charger is built to maintain the charge of the battery. Just like their name suggests, they prevent deep cycle batteries from being discharged completely. They save energy and help extend the life of a deep cycle battery.

Top 6 Best Deep Cycle Battery Chargers Available of 2021

1. NOCO Genius G26000 ProSeries Battery charger

Top Pick

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Features

The NOCO Genius G26000 ProSeries Battery chargers are some of the safest and most advanced in stock. This model was invented to charge 12 volts and 24 volts deep cycle and lithium batteries up to 500Ah. The NOCO Genius G26000 can also effectively maintain automotive, marine, and RV batteries. It was designed to charge two times faster than the ordinary battery charger. Its other use includes jumpstarting and repair damaged batteries, charging 124V racing batteries, and other power DC equipment.

The NOCO Genius G26000 was designed to be used on micro-hybrid start and stop cars, and also on CANBUS electrical systems. This model can monitor battery activity for safe and efficient charging. This is made possible by an onboard microcomputer. With the microcomputer on board, it automatically minimizes energy consumption and provides redundant levels of safety protection for the battery and the vehicle at large. The safety protection features include spark-proof technology, reverse polarity, and overcharging. For 24/7, it can remain safely protected. This unit is ultra-compact, portable, and incredibly lightweight because of its streamlined design.

The NOCO Genius G26000 features external mounting holes and a rubberized base. The function of this feature is to avoid surface slipping and scratching. This is done while it remains impact, UV, and water-resistant. It is equipped with intuitive LED indicators that provide visual state of charge feedback and diagnostic information. It can do this even when it’s in maintenance mode. The NOCO Genius G26000 includes HD X connect battery clamps for 50-60Hz electrical systems. The battery clamps are equipped with detachable eyelet terminals and five years limited.

The NOCO Genius G26000 is a powerful and professional battery charger. This tool was designed to recharge all types of batteries at a faster speed. It is equipped with an input voltage of AC-110-120 VAC. During year-round battery maintenance, it is designed to keep your battery fully charged. This unit is also perfect for improved performance and longevity power consumption of 443 watts maximum.

You can also use the advanced repair mode to reverse the damaging effects. This is done when the battery is left uncharged for an extended period. This is meant to improve performance and longevity. You can also convert the NOCO Genius G26000 into a 5Amp constant current and voltage power supply. This can be done to maintain onboard computer members during battery changes or as a DC power source.

Pros

• At low voltage, it applies a high voltage pulse charge
• It is equipped with an intuitive visual diagnostic tool for detecting reverse polarity
• The NOCO Genius G26000 automatically enables the charging port to charge CANbus systems
• It was also designed to keep the battery fully charged without overcharging

Cons

• The NOCO Genius G26000 doesn’t come with a case for storage

2. CTEK MULTI US 7002 12V Battery Charger

Top Pick

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Features

• 12 volts
• Low back current drain
• Maintenance pulse charging features

The CTEK MULTI US 7002 12V is a deep cycle Battery Charger made with a primary switch. The primary switch is for pulse maintenance. For battery charging, this represents the state of the art technology. This unit is equipped with multiple charging modes. It also features a unique eight-step charging curve. With these refined technological innovations, The CTEK MULTI US 7002 moves far beyond the capabilities of other 12V battery chargers. By so doing, it’s able to determine whether a battery can hold the charge given. They make sure that your car battery is getting the best possible care.

This model is also equipped with multiple modes for flexible use. it has been designed for different needs of batteries and cars. Having kept this in mind, you can choose between several different modes. The available different modes include the normal type for wet, maintenance-free batteries; the cold weather type which is recommended to be used in conditions that are less than 41F; and the record type that reconditions batteries that have discharged fully.

This model is designed for safety and compatibility. When they were designed, user safety was in mind. The connection is much easier because they are spark-free. This feature will also protect you from gasses that the batteries normally produce. The CTEK MULTI US 7002 12V deep cycle Battery Charger is also protected from reverse polarity. It’s designed with short circuit proof features as well. It is also equipped with a red light that indicates when the charging cannot begin until you have connected the charger correctly.

With CTEK MULTI US 7002 12V deep cycle battery charger, there is no need for any specific knowledge of the batteries or their charging methods. The charger takes its readings once you switch it to preferred mode. After switching it on, it starts charging the battery in 8 steps. The first step is desulphation. This step is where it allows the possible reconditioning of batteries that have lost power because they have never been used for a long period. The second step is the soft start. At this stage, it charges the battery until its terminal voltage has risen to the pre-set level. Bulk is the third step in which 80% of primary charging occurs. Absorption is the fourth step. At this stage, voltage is kept at a present level.

The analysis is the fifth step. This is a step where charging voltage is measured. Reconditioning is the sixth step. At this stage, the battery is fed with a constant current of 1.5A. It’s also fed with a maximum voltage of 15.7V. The seventh step is floating. At this stage, a constant voltage is maintained. The last and final step is pulse charging where when the voltage drops below 95%, then the battery receives a pulse of electricity. At the final step, the battery is kept at the perfect condition when it’s not being used. The CTEK MULTI US 7002 12V deep cycle Battery Charger is perfectly suited for optima yellow top batteries. It is ideal for seasonal cars because it can be connected for months.

Pros

• This battery charger has switch charging features
• It is also equipped with desulfation functionality that reconditions batteries that have never been used in a long period.
• It is also ideal for seasonal cars because it can be connected for months
• The warranty is limited to five years

Cons

• There have been reports that it doesn’t back up the power supply when the battery is disconnected

3. TecMate Optimate 3, TM-431 Battery Charger and Maintainer

Top Pick

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Features

The TecMate Optimate 3, TM-431 works for your motorcycle, ATV, side by side, or personal watercraft. When no other charger will work, it will save your AGM, GEL, STD, Starter, or Deep Cycle battery. Nothing will save your battery if this unit won’t. They will be no more battery problems, all you need is to connect and forget. The TecMate Optimate 3 will stop charging and warn you if there is a problem with your deep cycle battery. On the other hand, it continues to charge if the battery is healthy.

This model unit also provides 24/7 battery protection. This is done by preventing discharge from connected circuits. With this protection feature, more battery power is guaranteed. It is also designed to automatically test your battery. It will show if there is any problem with your deep cycle battery. The TecMate Optimate 3 is equipped with a fully sealed case to protect you from spillage and light rain. Therefore it is recommended by well-established brands like Honda, Kawasaki, KTM and Husqvarna, and other global battery manufacturers.

The TecMate Optimate 3 has no risk of overcharging. It suppresses sparks, making it a safer tool for your car electronics. This model is the best when it comes to taking care of battery cranking. You can always count on it for long term battery maintenance. When there is a short circuit or when the battery is disconnected, it automatically shuts down. This means it’s safer to use especially on CANbus systems. It is also designed with user interface lights that indicate when the battery is charging or when it can’t charge due to a fault with a battery. You are also advised to leave the TecMate Optimate 3 connected for a long time for effective use on your deep cycle battery. This is because 12hours is a recommended time for a charge test.

If you live in a cold climate environment then this is the best tool for your deep cycle battery. As you might know, coldness lowers the voltage of the battery. Meaning your battery will not have enough crank power. This unit will do the right job for you. It will recharge and save your battery in no time. All you have to do is to leave it plugged in overnight. The following morning you will be good to go.

The TecMate Optimate 3 can even be used to charge your back up power source like the Honda generator. This is because this battery charger is equipped with 0.8A output power which suits well for a 9Ah generator battery. When you hook it up for the first time, it will switch to battery saving mode. This function saves volts for later use. It also has well-built battery diagnostics that keep your deep cycle battery fully charged.

Pros

• Saves power for later use
• It will automatically identify problems in your deep cycle battery
• It is equipped with a fully sealed case that will protect you from spillage
• It is recommended by well-recognized global battery manufacturers like Honda, Yamaha, etc.

Cons

• This unit overcharges some batteries

4. Yuasa YUA 1202262 Dual Bank Automatic Battery Charger

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To allow for simultaneous charging of multiple batteries, the Yuasa YUA 1202262 is equipped with two independent charging stations. It is capable of charging both 6 and 12 volts batteries. Both conventional and sealed batteries can be charged. To maximize battery life and performance, it is equipped with automatic charging and maintenance features. The Yuasa YUA 1202262 uses a five-stage charging algorithm that has been approved by OEM. This precautionary feature saves time and energy. It does all this to make sure your deep cycle battery is properly and fully charged.

The Yuasa YUA 1202262 recovers sulfated batteries through the active desulphation functionality. It also eliminates surprises by detecting defective deep cycle batteries. The manufacturer has also included six feet alligator clips and cables for a fast and quick connection. This model begins charging again when the battery drops down. On the other hand, it switches into maintenance mode when both batteries are fully charged. It is not waterproof. Meaning you can mount it on your boat without worrying about malfunctioning. It also protects your battery from overcharging. You can leave it plugged into your deep cycle for a long time, and it won’t over charge it.

With the Yuasa YUA 1202262, you can charge your two batteries individually. This means that you can turn off one of the chargers if you only want to charge one battery. But if you are using both chargers, you are advised to use 120 volts of a maximum of 480 watts. This is because it uses a maximum of 2 amps on each side. The length of the cable is long enough to have two bikes on fast connect systems.

The Yuasa YUA 1202262 is also designed for safety and compatibility. User safety was in mind when they were being invented. They make the connection much easier the fact that they are spark-free. This means you will also be protected from gasses produced by the batteries. The Yuasa YUA 1202262 is also protected from reverse polarity. It’s designed with short circuit proof features as well.

The Yuasa YUA 1202262 also works very well in unfriendly environments. You can install this unit outside but make sure it’s undercover. In this case, they will keep your battery working even in temperatures that are below -10 degrees Celsius. The light indicators on this model are also easy to understand. They will indicate if your battery is charging or if it has a fault. They are designed with alligator clips that are easy to hook up. When connected they give it a firm grip. So you will not need to worry about power being cut when it’s charging your deep cycle battery.

Pros

• The Yuasa YUA 1202262 has two independent battery charging stations for charging a lot of batteries
• It also saves time and energy with the OEM approved five-stage charging algorithm
• It also detects defective batteries even before it starts charging
• It also recovers sulfated batteries through the active desulphation feature
• It is equipped with alligator clips for a firm connection

Cons

• Reports of the charger melting after continuous use without disconnecting

5. Battery Tender 12V High-Efficiency Battery Charger

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The Battery Tender 12V Battery Charger keeps your deep cycle charged. Before it switches to float mode it provides a full charge to the battery of your car. It switches to float mode so that it can maintain proper voltage levels. It does this to keep you safe. It has been designed to store energy for a long period without overcharging your battery. At 50/60 Hz has an input of 100 to 240VAC. On the other hand, it has an out of 12 volts DC 1.25 Amps. These voltage levels will be well maintained that your battery cannot get damaged.

The Battery Tender 12V Battery Charger is also easy to use. It has been designed for low maintenance so that it can be quick and easy to use it. This model is a universal power sports car charger. This means that it is compact and lightweight. They can be operated anywhere. Even in spaces of small storage. The Battery Tender 12V Battery Charger has an extended battery lifespan. This means that it can charge many types of batteries. The batteries it can charge include, lead-acid, flooded, and maintenance-free sealed batteries. They also provide and maintain an optimal charge which is ideal for use in long term storage. When the battery is fully charged, it automatically switches from fully charged to float mode. With this feature, you don’t have to worry about your deep cycle battery being overcharged.

The Battery Tender 12V Battery Charger has the technological ability to monitor power levels. It is equipped with two colors LED light indicators with solid states. The function of this is to indicate the state of charge for your deep cycle battery. It’s able to indicate when the battery voltage drops too far under load. The ISM adaptive charging will resume the full output of the charger when the power is cut short or when it’s under load. And to ensure user safety is designed with reverse polarity protection features. Reverse polarity is inform of red and green light. In this condition, they flash alternately to ensure your safety.

The Battery Tender 12V Battery Charger is a safe and secure device. During deep cycle battery connection, it is spark proof. This makes it a smart charger and a great power maintainer of your battery. Before it starts proving power to your battery, it automatically detects reverse polarity. The purpose of this is to ensure correct and locked-in protection. Its charging program is completed in 4 steps. The first step is initialization which is sometimes referred to as a soft start. At this stage, the Battery Tender 12V charges the battery until its terminal voltage has risen to the pre-set level. Bulk is the second step in which 80% of primary charging occurs. Absorption is the fourth step. At this stage, voltage is kept at a present level. The seventh and the last step is float. At this stage, a constant voltage is maintained.

Pros

• Before switching to the float mode the Battery Tender 12V provides your deep cycle battery a full charge
• The fact that it’s a universal power sport, it is compact and lightweight to operate anywhere
• It also extended battery life features
• It has the technological power to monitor energy levels
• It is spark-proof, which makes it safe and secure

Cons

• Since it’s a low amp charger, it may take up to 3 to 4 days to fully charge a completely discharged battery

6. CTEK MXS 5.0 Battery Chargers and Maintainer

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The CTEK MXS 5.0 is an advanced battery charger controlled by a microprocessor. It is equipped with automatic features for charging and maintaining the deep cycle batteries for your cars and motorcycles. This puts the CTEK MXS 5.0 in an unrivaled position for lead-acid batteries from 1.2 to 110Ah. This model is designed with automatic temperature compensation built in. the function of this technology is to ensure the best charging performance even in the most extreme unfriendly weather conditions. It has been designed with battery diagnosis features. These features can establish whether your battery can receive or retain a charge.

The CTEK MXS 5.0 has an AGM option which is a patented automatic desulphation program. The CTEK MXS 5.0 also has a special record mode for reconditioning deeply discharged batteries. And when a battery is connected for a long period, this unit model uses a pulse system which is the most efficient maintenance mode. It also features a unique combination of charging modes for the battery. These features are found in the automatic temperature. This makes the CTEK MXS 5.0 the fastest, most effective, and versatile deep cycle battery charger. They are also equipped with alligator clamps and eyelets for a firm grip when connecting.

The CTEK MXS 5.0 can restore stratified and deeply discharged batteries. This is done by a special reconditioning feature. Other special reconditioning functions include unique maintenance charging and the charging of highly demanding Optima AGM batteries. It is also designed to protect the electronics of your car. The CTEK MXS 5.0 charger is dust and spark-proof. Other precautionary features include reverse polarity protection and short circuit proof.

The CTEK MXS 5.0 model is also equipped with multiple modes for flexible use. It has been designed for different needs of batteries and cars. Having kept this in mind, you can choose between several different modes. The available different modes for the CTEK MXS 5.0 include the normal type for wet, maintenance-free batteries; the cold weather type which is recommended to be used in conditions that are less than 41F; and the record type that reconditions batteries that have discharged fully.

Pros

• It is equipped with built-in temperature sensing capabilities
• The CTEK MXS 5.0 is a completely sealed unit, spark-proof
• It’s also protected from reverse polarity
• 2 volts is the minimum voltage required

Cons

• There have been reports that it doesn’t back up the power supply when the battery is disconnected

FAQs

Q. Can you use any Deep Cycle Battery Charger to charge an RV?

A. Yes. You can charge 3 125Ah AGM batteries with any deep cycle battery charger without any difficulties. They can even run an air conditioner for over an hour without going below 50%.

Q. Is the Deep Cycle Battery Charger heat up when it’s charging?

A. No. it’s not supposed to heat up when you are charging your battery. You can pick out different deep cycle battery chargers and try them out on different batteries. We advise you do a replacement if they are heating up.

Q. Can a Deep Cycle Battery Charger Charge a Dead Battery in Cold Temperatures?

A. Yes. most deep cycle battery chargers can charge through a cigarette lighter. They can charge your battery in temperatures as low as -20 degrees.

Read also: Best Home EV Chargers

Recommendations

We recommend to you The NOCO Genius G26000 if you are looking for a charger that can work on micro-hybrid start and stop cars, and also on CANBUS electrical systems. We also recommend The CTEK MULTI US 7002 12V deep cycle Battery Charger made with a primary switch. The primary switch is for pulse maintenance. For battery charging, this represents the state of the art technology. Another great charger from CTEK that we can recommend is the CTEK MXS 5.0. This is an advanced battery charger controlled by a microprocessor. This model allows simultaneous charging of multiple batteries. We also recommend the Yuasa YUA 1202262 if you need a charger that is equipped with two independent charging stations. This means that It is capable of charging both 6 and 12 volts batteries. last but not the least, we recommend to you the TecMate Optimate 3, TM-431 that can work perfectly fine for your motorcycle, ATV, side by side, or personal watercraft.