The 4 Best AGM Battery Chargers In 2020 (NEW Guide)

Best AGM Battery Charger

Just like every other electronic item, vehicle batteries lose their charge, especially when not in use. Does that mean that you would have to spend on a new battery again? Most certainly not. All you really need to do is invest in an AGM battery charger for restoring power back to the cells.

The AGM technology created a high fuss after it’s release in the 1980s. Their effectiveness at providing a high current while increasing reliability was a high deal for consumers who spent thousands of bucks on similar yet unsuccessful methods. While the market boasts of a huge variety of chargers, choosing the perfect one is still a complicated procedure; a wrong charger poses a threat to the life expectancy of your charger.

We compiled a list of the best AGM battery chargers to help you choose the best one. The basis of compilation is customer feedback- most of them have a 5-star rating, analysis, and research along with our own experience. Moreover, our buying guide and FAQ section lists the important charger factors and answers most of the queries to let you make the perfect decision.

Best AGM Battery Charger

4.4 out of 5 stars
4.7 out of 5 stars
4.1 out of 5 stars
NOCO Genius G7200 7.2A UltraSafe Smart Battery ChargerCTEK (56-353) MULTI US 7002 12-Volt Battery ChargerSchumacher SC-1200A-CA SpeedCharge 12Amp Fully Automatic Battery Charger

  • BEST OVERALL
  • Intuitive LED indicators
  • Portable & super-efficient

  • BEST BUDGET
  • Lasts for a long time
  • Multiple modes

  • GREAT VALUE
  • Charges pretty quickly
  • Foolproof & flexible design

AGM Battery Charger Reviews

1. NOCO Genius G7200 12V/24V 7.2A UltraSafe Smart Battery Charger

NOCO Genius G7200 7.2A UltraSafe Smart Battery Charger

Check the latest price on Amazon.

See the NOCO Genius G7200 in a glance:
  • versatile all-in-one battery charger
  • great for cars, boats, trucks, tractors, etc
  • 230 amp-hours.
  • Meant for all types of 12-volt and 24-volt lead-acid batteries, any common automotive, or maintenance-free batteries
  • DC Cord-75-Inches
  • AC Cord-60-Inches
  • advanced Repair Mode to reverse the damaging effects of self-discharge
  • Power Consumption:132 Watts (Max)
  • Can be converted into a 5-amp constant-current, constant-voltage power supply
  • An optimized charge mode for safe charging
  • spark-proof technology, reverse polarity protection for safety
  • backed by a 5-year warranty

Features:

You have tons of miles left till your next destination, but suddenly, your vehicle stops. Everything is fun until you realize midway that you don’t have a charger. Doesn’t this scenario make you shiver? It’s important to have a charger when you are utilizing the power of a battery. What’s a better option than the NOCO G7200 BATTERY CHARGER?

Power

One of the best features of the Novo battery charger is the variety of modes it has to offer consumers. Everyone has different needs that keep on changing; therefore, a charger that meets each one of them is similar to a miracle. The modes offered are 12V Normal, 12V Cold/AGM, 24V Normal, 24V Cold/AGM, 12V Repair, 13.6V Supply, 12V AGM+ and 12V Lithium. The normal modes work with your standard style batteries: the 12V can easily power up a stock battery, whereas the 24V simply doubles up the power.

The cold modes work with batteries during extreme temperatures. As we mentioned in one of the FAQs, using your charger during extreme temperatures might reduce the life expectancy of the battery. Any temperature beneath 50 degrees fulfills the requirement of the cold mode: the 24V Cold/AGM works with a dual set up, whereas the lower counterpart is meant for the regular batteries.

Furthermore, the 13.6 V supply converts the voltage into DC power for purposes such as operating a tire inflator. On there other hand, the AGM plus version make sure that batteries such as the Group 31 AGM are not overcharged, thus preventing failure.

How to set it up?

You don’t need to be a clone of Albert Einstein to set up this battery. The only thing you really need to do is follow the instructions. Follow the correct coordination to connect the cables with the battery. It’s essential to check the side of power; however, in most cases, power is on the left side: a red sign will confirm it.

Even though the timing of attaching cables doesn’t affect the performance, it’s preferred to connect the positive cable first, especially when installing a battery.

Other features

Overcharging can ruin the life of the battery, and you don’t want that. But how can you prevent it from happening? NOCO comprises of several safety features to prevent overcharging and minimizing related fires.

The state of the art design features a rubber body to prevent any unfavorable slips while minimizing the side effects of sunlight and UV rays. Its compact size allows it to fit in your hand while the lightweight makes it portable.

What we like:

  • Has excellent safety features
  • Intuitive LED indicators for battery information
  • Portable and super-efficient

What we don’t:

  • Might have problems with charging a completely dead battery

Editor’s Rating

4.4 out of 5 stars

2. CTEK (56-353) MULTI US 7002 12-Volt Battery Charger

CTEK (56-353) MULTI US 7002 12-Volt Battery Charger

Check the latest price on Amazon.

See the CTEK (56-353) in a glance:
  • reconditioning mode
  • built-in temperature sensing capabilities
  • Securely sealed Unit
  • spark proof and reverse-polarity protected
  • Excellent input and output cable
  • Great for start-stop systems
  • Input voltage 110-120 VAC

Features:

Isn’t it weird how our batteries choose the worst days to end? Be it a cold, wet, or dreary day and within no time, your car just stops, and without a charger, you may just face the worst of times. The CTEK Multi US 7002 12 Volt Battery Charger was manufactured, keeping in mind the needs of a consumer. The compact and lightweight design makes it an optimal tool for your vehicle kit, while the outstanding power makes it highly competitive with its expensive counterparts.

It’s a perfect fit for all of your 12V recreational vehicles such as ATV’s and boats.

Multiple Modes

As we mentioned earlier, it caters to a diverse consumer range. How does it do that? Keeping in mind the different needs of every battery owner, it comes with multiple modes. You can choose the one for your current requirement from a range of four options. The normal mode is meant for gel and maintenance-free batteries while the cold weather mode caters to batteries being charged in a colder climate, i.e., .lower than 41 degrees Fahrenheit. The 13.6V supple mode, on the other hand, serves as a maintenance mode for a constant supply, whereas the recond feature reconditions severely discharged batteries.

8 step charging curve

A charger’s only job is to charge. Pretty obvious, right? The real test lies in the efficiency of the process. Safe to say, the CTEK Multi US 7002 charger makes it easier for the users. You don’t need any special knowledge whereas; beginners find it pretty easy too. After selecting the mode you want, the charger picks up its own readings to finish the 8 step process. It reconditions the battery in the case of self-discharge. After the desulphation process, the soft-start procedure charges the battery, allowing the terminal voltage to reach a preset level. The bulk stage is symbolized by an 80% charge, and after the final absorption stage, it’s voltage is measured to finish the process. The battery is reconditioned again to maintain a constant voltage float while the pulse feature injects a pulse of electricity for a quick reboost.

Safety features

There’s no use of buying equipment with no safety features. The biggest threat faced by AGM batteries is overcharging. The spark free charged makes the connection safer while preventing any reverse polarity connections. With the short circuit proof and red light indicator, you can be notified of poor connections.

What we like:

  • Multiple modes for different environments and needs
  • Lasts for a long time
  • Has great safety features

What we don’t:

  • Can not be used to jumpstart batteries
  • Might be less durable due to its compact size

Editor’s Rating

4.7 out of 5 stars

3. Schumacher SC-1200A-CA SpeedCharge 12Amp 6/12V Fully Automatic Battery Charger

Schumacher SC-1200A-CA SpeedCharge 12Amp Fully Automatic Battery Charger

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See the Schumacher SC-1200A-CA Speed Charge in a glance:
  • 50A engine start
  • 10A boost mode
  • 6/2A charging and maintaining
  • Microprocessor automatically adjusts the amperage rate
  • Multi-stage charging for precision, safety, and long battery life
  • Float mode monitors and maintains an optimum battery charge
  • Reverse hook-up protection to prevent damage to battery and charger.

Features:

What determines a good charger? Correct and efficient functions, easy user interface, great portability with a fast-charging speed. However, finding a charger that offers all of these features is quite hard. The Schumacher SC-1200A-CA fully automatic battery charger is a product of the Schumacher Company. The attractive features and impeccable design can not be ignored.

The company

Schumacher is famous for manufacturing energy-efficient products for your day to day tasks. Keeping the consumer’s needs in mind, they ensure that each product matches the highest safety standards without affecting the ecological system. Their battery chargers received a lot of hype and positive reviews due to the great results.

Power

It’s not uncommon to buy an expensive charger and have it give up on you when needed the most. You need a reliable charger that would solve all of your charging requirements in no time. The Schumacher charger is meant for charging all the batteries with a range of 6V and 12V. You do not need to do much except connecting the charger to the terminals of the battery since the process starts on its own.

Since quick charging is required during dire situations, this charger automatically detects the voltage for initiating the charging process. The amperage rate is adjusted according to the charging function. With three amps, it maintains the charger while it requires six amps for medium-speed charging. For rapid action, the 12V does the job perfectly.

The multiple charging modes make this device one of our favorites. The pre-programmed microcontroller delivers high performance within a limited time by automatically adjusting the amperage, according to the weather and requirements.

Safety

Safety features are a must, regardless of the equipment. There is a list of safety concerns attached to the usage of battery chargers, such as short circuits. Therefore, this charger has a reverse hook-up protection to minimize issues with its maintenance. If your terminals are wrongfully attached, the Unit doesn’t begin the operation, keeping it well functioning for future use. On the other hand, the float mode monitoring stops the charger from acting to save up on energy when not in use.

The Function of its Microprocessor

As we mentioned earlier, this charger features the latest technology to minimize negative effects on the environment and increase its efficiency. The microprocessor further enhances the user interface, so users with limited battery experience can use it without any hassle too. Compared to a conventional charger, it offers double the speed and brings your dead batteries to life without any start-up issues.

With a sturdy handle and easy portability, you can store it anywhere.

What we like:

  • Charges batteries pretty quickly
  • It is affordable for many customers
  • A foolproof and flexible design for beginners
  • Lightweight and portable

What we don’t:

  • Has a noisy fam operation
  • Cheap construction of housing
  • No properly written instructions manual

Editor’s Rating

4.1 out of 5 stars

4. Optima Digital 1200 12V Performance Battery Charger and Maintainer

Optima Digital 1200 12V Performance Battery Charger and Maintainer

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See the Optima Digital in a glance:
  • Charges batteries down to 1.25V
  • Operates car stereo and video applications more than 250 watts over the OE system
  • Integrated (+) charging clamp
  • LED work light covered by non-slip grips
  • Charges, conditions and maintains 12V AGM as well as flooded batteries
  • LCD battery charging gauge and quick-set selections for easy operation
  • USB charging port compatible with smartphones, cameras, and tablets

Features:

The Optima Digital 1200 Battery Charger is, quite easily, the best one in the market. The qualified manufacturers are aware of the complex procedures behind charging batteries, which are not limited to clamping on leads and plugging into cables. By using an innovative shortwave and variable charge rates, consumers get access to a successful and safe way to charge their AGM battery.

Power

It’s safe to say that we are completely obsessed with the Optimas power range. By offering an output current of 12 amps, it provides a quick jump start to your dead battery while charging it slowly and steadily, just the way an AGM battery wants to be charged. Setting up the battery is not complicated: firstly, you’ll need to select the type of battery being used eg, AGM, lead-acid, or glass mat. Doing so analyses it states after which Optima begins to rev it up to an optimum charge. After it reaches this level, the charger shifts to the maintenance mode which not only trickle charges the battery but also monitors it throughout. What’s the use of it? A constant state of charge and discharge minimizes the life of the battery; therefore, the maintenance mode lets it discharge a bit before continuing the process. As a result, your battery remains conditioned for a great performance.

Design

For some reason, consumers do not find enough space to store the large battery chargers in their vehicles. Even though it’s part of their own carelessness, Optimas manufacturers made their version of the charger sport a compact and lightweight size. It makes it portable and easy to use.

Moving on to its ergonomic design, Optima looks similar to their other batteries with a refined version of their signature high tech look. There is a ratcheting carrying handle on the top of it for easier portability.

Moreover, a tidy compartment in the rear end carries the charging cables while providing additional space to store the hard wires connectors. Apart from a secure yet easy closing technique, there are slots at the ends for the cables to pop out from whilst being connected.

Furthermore, the central information gauge at the top displays the battery charge level, amperage, and other messages related to internal errors. Along with this, there are quick set profile controls to initiate the connection process while on the right, there is a pre-charge status indicator and the LED backlight button.

What we like:

  • Utilizes technology for easier and effective charging
  • Several modes that cater to every charging need
  • A 3-year warranty for any defects
  • Excellent customer service

What we don’t:

  • Some people find traditional battery chargers easier to work with

Editor’s Rating

4.4 out of 5 stars

Buyer’s Guide: How To Choose The Right Battery Charger?

Purchasing electronic items is hard; there are several things that may go wrong, making you end up with a product you didn’t even need in the first place. Therefore, we made a buying guide to make this process easier for you. Let’s proceed.

Step 1: Your Battery type

Contrary to popular belief, a single charger does not work for every battery. There is a variety of battery chargers in the market; however, one with a microprocessor works best with an AGM battery.

Flooded Lead Acid Batteries

This is one of the most common types due to the reasonable price range. It’s ideal for turning your car’s ignition while being a great alternative for the power load of your car’s accessories. Does that mean that it can rev up the tonnes of features offered by luxury cars, including but not limited to heating systems, DVD players, and a GPS system? No, flooded batteries do not provide enough power for such consumption.

Their biggest drawback is high maintenance. Since they are not sealed, inevitably, you would have to spend quite a few additional bucks to ensure that there are no acid leakages, and the lead plates are intact. Another reason is the valves on the top of the box: you need to make sure that the water level is kept intact through the valve openings. If it’s too low, refill it up immediately to keep it running for longer.

Pros
  • They are affordable
  • Offer an easy start-up
  • Can easily power the standard accessories in your vehicle
  • Suitable for every weather condition and OEM applications
Cons
  • You need to maintain it regularly
  • A strong vibration may damage it
  • Due to limited flexibility, you can spill the liquid

Sealed Car batteries

Famous for the minimal maintenance, Sealed Car Batteries allow users to go through days without checking the water level. For irresponsible and forgetful people, this is a great feature since your mistake will not ruin the life of your battery.

Sealed batteries comprise of vents or openings to let the toxic gases out of the battery. Since they are tiny, the water loss is minimal compared to their flooded counterparts. However, once they run out of fuel, you will have to refill it with acid.

Pros
  • Doesn’t require maintenance
  • Minimal off-gassing
  • The acid stays the end of the battery life
  • Great for light-duty cars
  • Have added flexibility
Cons
  • A short life
  • Not meant to power too many features in your car

Calcium-Calcium Car battery

We assume that you aren’t living under a rock. Pretty obvious from its name, this battery comprises calcium alloy plates, which decreases fluid loss by 80%. Sounds cool, right? Even if you haven’t used your car for several months, restarting it will not be a huge issue. Since they don’t lose their charge quickly, it offers you a higher cold cranking amps rate.

However, charging a calcium battery isn’t as easy as you think. Due to calcium ions, there is a possibility of experiencing adverse chemical reactions: the plates may either be covered with an inactive lead plate or growing grid corrosion may occur, eventually leading to malfunctioning. But since charging a battery is necessary, you need to go on an extensive search for a suitable charger.

Pros
  • Very less fluid loss
  • Low self-discharge
  • Doesn’t require frequent maintenance
Cons
  • It’s hard to charge it
  • Short service life
  • Basic cycling capacity

Absorbed Glass Mat Car Batteries

AGM batteries are rightfully considered to be the most attractive option for a car battery. It has secret safety valves for the hydrogen and oxygen molecules to react with each other, limiting fluid loss.

However, the best feature in our eyes is the fiberglass mat. Working like a sponge, it safely holds the electrolyte in the mat, leading to less internal resistance and better electron flow. This feature works in favor of the atmosphere since there is no harmful release of toxic gasses into the air. With a strong cylindrical case and resistance to vibration, the mat stays in place. Moreover, an AGM battery is a great option for start-stop technology since it efficiently powers higher electrical demands. Be it your GPS system or a bass boosted stereo system; an AGM battery has everything under control.

Pros
  • Great for every weather condition
  • Supports high electrical requirements
  • Minimizes the release of toxic gasses
  • Has flexible mounting
Cons
  • It is not affordable
  • Limited amount of acid

Even though your budget impacts your final decision, we consider it better to save up for an efficient product rather than settling for one at a bargained price.

Step 2: The size of the battery

This translates to the number of amp-hours that your battery can store. A standard full-sized auto battery store around 50 amp-hours. You may need a 10 amp charger to refill the battery’s power within 5-6 hours. On the other hand, a marine deep cycle battery is rated at 100 amp-hours. For recharging it to its full capacity, you need about 11 hours with a 10 amp charger. How are we calculating the recharging time? Take the amp hour rating of the battery, divide it by the amp charger rating, and add an extra time of 10% for topping it off.

For people looking for a quick recharging time, you can purchase one with a higher amp rating. However, since AGM batteries like to receive a slow and steady charge, it’s better to opt for a smaller charger.

Step 3: Look at the extra features

As we always say, what’s the use of a product that only offers you what you pay for. Since the market is pretty competitive, it’s not uncommon to see manufacturers offering extra features at a limited price range.

To choose one, it’s necessary to look at your requirements. A low current charger works perfectly fine with motorcycle, car, and aircraft batteries. However, for people with less time on their hands, a fast and powerful charger works best.

A multi-voltage input charger offers multiple options for a variety of needs. If you’re traveling, keeping this in hand would get rid of most of your battery issues. For people traveling to humid areas, a waterproof charged is recommended, whereas, some chargers work as power supplies for RV use. If you have a lot of batteries at hand, buy a multi-bank charger to charge them all together.

Frequently Asked Questions (FAQs): About AGM Battery Charger

Q: Do AGM batteries last longer?

A: This is one of the most frequently asked questions by consumers, especially since they cost significantly more than their substitutes. However, there isn’t a straight answer, as several factors affect the life expectancy of an AGM battery. Batteries are utilizing pure lead in their construction last for a longer time than those using recycled lead.

Using a weak intercell weld negatively impacts the life compared to cast lead straps as they work better and last longer. Apart from the quality, the climate of the vicinity within which a battery is being used greatly impacts the durability. Mild temperatures are better whereas, an extremely hot and cold climate is harsh on the battery. Maintaining a proper battery voltage whilst preventing a discharged state for an extended period allows it to last for a long time. After keeping these factors in mind, the AGM battery lasts for two to three times more than a flooded battery.

Q: What are the advantages of an AGM battery?

A: There are several advantages of an AGM battery, making it a worthwhile investment. With a low internal resistance, they are capable of transmitting high currents on demand. They last much longer than your common flooded batteries without requiring any maintenance. If you are looking for a battery to rely on, this is the one. It is lightweight, easily adjusts to a variety of temperatures with a low self-discharge. The depth of discharge is almost 30% more than a flooded battery. What more would you want?

Q: Can you use a regular battery charger on an AGM battery?

A: This is a common misconception amongst users, and the answer is no. AGM batteries need to be charged on low power at a slow speed. The special AGM battery chargers comprise of microprocessors for collecting information from the battery to adjust the current and voltage accordingly.

The two most important things to remember are that overcharging kills AGM batteries, and you can not use an alternator as a substitute for a charger.

Q: What type of battery charger is needed for AGM batteries?

A: An AGM battery charger plays an important role in maintaining the battery for a long time. The first thing to be aware of is their tendency to experiencing sulfation. Since discharging leads to the formation of lead sulfate crystals, a charger with a desulfation mode works best. As we mentioned earlier, AGM batteries liked to be charged at a low and slow speed. Therefore, you need a low amp charger (around 1-12 amperes). The low voltage minimizes heat production while increasing the life expectancy of the battery.

Q: Which is better AGM or gel battery?

A: There are two types of batteries in the market: Flooded lead-acid batteries and sealed batteries. The latter is future subcategorized into an AGM and Gel version. The major difference between the two types is its cost, which determines it’s life expectancy and maintenance.

Absorbent Glass Mat Batteries are famous for working in a vast range of conditions. Due to its thin fiberglass mat, the battery is resistant to vibration. Gel batteries, on the other hand, use a thick paste rather than a mat.

The major difference between the two is the charge rate; AGM batteries work better in terms of handling a higher charge and discharge rate. Gel batteries are comparatively more sensitive. Therefore, you need to ensure that the correct parameters are used.

Conclusion

AGM battery chargers are a lifesaver in times of need. You can easily use it to keep your vehicle running without utilizing the spare battery at hand. However, choosing the right one is a complex task. Buying the wrong one will reduce the life of your battery by overcharging them. Our list of the best AGM battery chargers comprises of versatile products that last for a long time and offer maximum satisfaction.

The one thing you should remember while purchasing a charger is to buy one with a microprocessor. It prevents it from overcharging the battery while offering a quick charging time and safety.

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