Best Car Battery Charger For 2021 (Review & Buying Guide)

Best Car Battery Charger For 2021

Best Car Battery Charger For 2021

For car owners, it’s really frustrating when their car breaks down in the middle of the road due to the battery not charged or getting dead. The situation gets even more frustrating when you have the urgency to reach somewhere and your battery gets out of charge. If you don’t want to get in a situation like this where you are helplessly standing on the road with your car due to a dead or flat battery then consider getting the best car battery charger.

A quality portable car battery charger comes in very handy when your car battery suddenly gets dead and you need to revive it instantly to make your car start. However, getting a charger for car battery is a tough decision and you might end up wondering what car battery charger should I buy?

To help you in making the right choice for buying the best portable auto battery charger, we bring you this review guide so that you can explore the best car battery chargers on the market to find the right one.  

Before we move to the top 10 best car battery chargers review, let’s talk a little about how to choose a car battery charger, what things to consider when buying a car battery charger, and is it good to buy a car battery charger. So let’s start:

Table of Contents

Is It Really Worth It To Buy A Portable Car Battery Charger? 

Yes, it’s definitely worth it to buy a portable car battery charger since it offers you convenience and more smart features than traditional car chargers. With a compact and durable design, and cutting-edge features such as water-proof and overcharging protection, a top quality car battery charger is good enough to charge a range of vehicle batteries.

How To Choose The Best Car Battery Charger? Things You Should Consider Before Buying One!

how to find the best car battery charger

To choose the ideal car battery charger, there are certain things and features that you must know about and should consider before actually making the final buying decision. Here below are all the things that you should look for before making a purchase.

Battery Compatibility

The very first thing that you need to check out is that the charger which you are considering buying is compatible with your car battery. There is a whole variety of car battery chargers available in the market that are compatible to work with certain car batteries such as lithium-ion and lead-acid. However, there are also battery chargers available that works with a range of batteries. So make sure that you know the type of your car battery and get a charger that is compatible with it.  

Charging Power (Ampere)

When you start exploring for the best car battery charger, you will find chargers with various charging powers or amperes. Make sure that you pick a battery charger with the right charging power, considering the charging requirements of your car battery. Like if you just want to maintain the charge of your car battery then go for chargers with amperes less than 5. But if you need a charger that can quickly charge your battery then get a battery charger of at least 10 amperes.  

Voltage

Just like ampere, the voltage also plays a great part in a car battery charger. Most cars have a 12-volt battery system, so you must have a 12-volt battery charger to charge the battery effectively. There are other chargers too that offer 6-volt and 24-volt charging and there are also chargers that offer multiple voltages charging so you must know the needs of your car battery before actually picking a charging option.

Charging Monitoring

These days, most car battery chargers offer you the charging monitoring feature. This feature helps you in monitoring the charging status of the battery so that there won’t be any damages to the battery due to overcharging or any other issue. While buying a car battery charger make sure that it must have the charging monitoring feature if you want to have care-free charging for the battery of your car.  

Functionalities

There are a great number of battery chargers for vehicles available in the market that offer you various functionalities. While some of these chargers can be used as trickle chargers, others are great in jump-starting the battery. Moreover, some of them are made to revive a dead car battery while some are just to manage the charging. So there is a classification of car battery chargers on the basis of their functionalities that you must know about before actually going to buy one!    

Price

Price always plays an important part when it comes to the purchase of a product. You should consider your budget first before deciding what car battery charger to buy. If your car battery needs a charge just once a year then we wouldn’t recommend you to buy the most expensive battery charger. However, if you are going to use it more often then get the best quality professional car battery charger that will cost you a bit expensive but it will also last long.

Top 10 Best Car Battery Charger For 2021 Based On Customer Reviews

1. NOCO Genius G3500 6V/12V 3.5 Amp Battery Charger and Maintainer:

NOCO Genius G3500 6V-12V 3.5 Amp Battery Charger and Maintainer

Searching for a versatile and multi-purpose car battery charger? If yes then you find a better one than the NOCO Genius G3500 battery charger and maintainer. This amazing car battery charger is not just reliable but also has high efficiency and that’s what makes it one of the best deep cycle battery chargers available in the market.

The best thing you will like about this super fast car battery charger is that it can charge both 6-volt and 12-volt batteries. Moreover, this charger comes in a variety of amperes, from a minimum of 0.75 amperes to a maximum of 26 amperes. The models with the higher amperes such as 15 ampere and 26 amperes are good enough to jumpstart a dead or flat car battery.   

Furthermore, the charger has intelligent micro-processors that help in monitoring the efficiency of the battery for safe charging. These on-board microprocessors also help n optimizing the energy consumption of the charger.

When it comes to the design, NOCO Genius G3500 has a very compatible design that also makes it very lightweight and super portable so that you can take it anywhere you want. Overall, it’s a very good car battery charger if you are looking for a cutting-edge and portable charging option for your vehicle battery.

Specifications: 

  • Brand: NOCO
  • Model: G3500
  • Charging Power: 3.5 Amps
  • Voltage: 12 volts
  • Batteries: Lithium Metal batteries
  • Product Weight: 2.15 pounds
  • Product Dimensions: 7.7 x 2.7 x 1.9 inches

Salient Features:

  • Versatile all in one battery charger
  • Advanced charging monitoring
  • Super-fast recharging
  • Advanced repair mode
  • Reverse polarity protection & spark proof technology
  • Works best for both 6-volt and 12-volt batteries

Pros

  • Very easy to use
  • Extreme portability
  • Intuitive design
  • Offer improved battery performance
  • No overcharging
  • Super safe for use

Cons

  • Can’t jumpstart a dead or flat battery
  • Difficult to operate

 

2. Battery Tender Plus Charger and Maintainer: 12V, 1.25 Amp Powersport Battery Charger and Maintainer for Motorcycles, ATVs, UTVs, and More – Smart 12 Volt Automatic Float Chargers by Deltran

Battery Tender Plus Charger and Maintainer

If you are on the quest for a small portable car battery charger with great features then Battery Tender Plus Battery Charger & Maintainer is the ideal suit for you! Battery Tender Plus Charger is the best battery charger if you are looking for one to charge lead-acid batteries.

Another incredible feature of this charger is that it’s an automatic car battery charger, which means that it will automatically stop supplying charge when the battery gets fully charged. This amazing feature will prevent your car battery from getting overcharged and will help in increasing the battery life. Moreover, the charger offers you a low and steady charge that is very good especially when you look from the battery’s health perspective.

Even though it’s a 1.25 amp charger still it offers you fast charging that can be faster even than a 3 amp charger. Therefore, you can consider buying it if looking for a portable emergency car battery charger for quick charging. Another incredible thing that you will like about this best-rated auto battery charger is that it works on a very simple mechanism and is also super easy to use. Simply connect the charger terminals to the battery terminals and it will start charging instantly.  

Specifications: 

  • Brand: Battery Tender (Deltran)
  • Model: 021-0128
  • Charging Power: 1.25 Amps
  • Voltage: 12 volts
  • Product Weight: 2.29 pounds
  • Product Dimensions: 11 x 4 x 11 inches
  • Warranty: 10 Year-Limited Warranty

Salient Features:

  • Power levels monitoring
  • Quick disconnect harness
  • Reversed hook-up protection
  • Constant upgrading
  • Charging indicator lights
  • Automatically detects the reverse polarity

Pros

  • Easy plug-in and charge
  • Faster charging
  • Maintain proper voltage levels
  • Automatic switching between charge and float modes
  • High-performance charging in any condition
  • Compatible with almost all types of car batteries

Cons

  • No proper display

 

3. NOCO GENIUS1, 1-Amp Fully-Automatic Smart Charger, 6V And 12V Battery Charger, Battery Maintainer, Trickle Charger, And Battery Desulfator With Temperature Compensation

NOCO GENIUS1

NOCO Genius 1 is currently one of the best-selling car battery chargers online and there have been obvious reasons for it! One of the reasons why it has been so popular is that it is a very cheap car battery charger that you can buy for a very economical price. Moreover, this battery charger is both reliable and will last for long.

However, the pick of the features of this charger is that it can even charge a vehicle battery that is completely dead. The charger also has sensors that are helpful in monitoring temperature etc. and it also offers you the option to adjust the charge according to your wants.

NOCO Genius 1 comes in a range of different models offering different amperes so you can get a high power model if you want a fast charge for your battery. Furthermore, it has a tickle charging feature that makes NOCO Genius 1 both a car charger and car maintainer.    

The charger also has a great smart design and it is efficient enough to charge batteries up to 30AH. Additionally, it is compatible with all sorts of lead-acid car batteries that include AGM, wet, and gel car batteries.  

Specifications: 

  • Brand: NOCO
  • Model: GENIUS1
  • Charging Power: 1 Amp
  • Voltage: 12 volts
  • Product Weight: 15.2 ounces
  • Product Dimensions: 3.43 x 4.02 x 6.73 inches
  • Warranty: 3 Year-Limited Warranty

Salient Features:

  • Ultra compact design
  • Offers 35% more power
  • All in one car battery charging solution (charger, maintainer, trickle charger, & desulfator)
  • Eliminate both over-charging and under-charging
  • Adjustable charging rate

Pros

  • Fully automatic operations
  • Can charge all kinds of car batteries including lithium-ion and lead-acid
  • Reputed to sense sulfation
  • Can charge both 6V and 12V batteries
  • Can even charge dead batteries

Cons

  • Slow charging issues due to low amperage
  • Only suitable for small capacity vehicle batteries

 

4. BLACK+DECKER BC15BD Fully Automatic 15 Amp 12V Bench Battery Charger/Maintainer with 40A Engine Start, Alternator Check, Cable Clamps

BLACK + DECKER BC15BD Fully Automatic 15 Amp 12V Bench Battery Charger Maintainer

Looking for a multifunction car battery charger? If yes then you won’t find a better one than BLACK+DECKER BC15BD that has great features to offer. The BC15BD model car charger by BLACK+DECKER is one of the finest car chargers that the brands have to offer.

Not just this model is very user friendly in terms of use because it has an uncomplicated interface but it also comes with the repair mode option that helps in preventing the buildups of solids on the battery for extended long life.

Moreover, this charger has an alternator check feature that keeps track of the battery voltage under load. The charger also features the 40-amp engine start technology that will start your car engine in less than 1.5 minutes, makes it the best car battery charger with a jump start function.

When it comes to charging connectivity options, the BC15BD model charger offers you three different ways to charge a car battery. You can connect your battery for charging either through battery clamps, cigarette lighter, or ring lugs and this multi-charging connectivity feature is something that you won’t find in most car battery chargers.

Specifications: 

  • Brand: Black & Decker
  • Model: BC15BD
  • Charging Power: 15 Amps
  • Voltage: 12 volts
  • Product Weight: 5.5 pounds
  • Product Dimensions: 10 x 6 x 12 inches

Salient Features:

  • Fully automatic high-frequency charging
  • Large LCD monitoring screen
  • Reverse polarity protection
  • Battery reconditioning feature
  • Patented alternator check

Pros

  • Compact & portable design
  • Additional monitoring features
  • Worry free charging
  • CEC compliant and ETL Certified

Cons

  • Quality control issues
  • Less user control

 

5. Schumacher SC1281 100 Amp 30 Amp 6V/12V Fully Automatic Smart Battery Charger 100A Engine Starter and 30A Boost Maintainer and Auto Desulfator Advanced Diagnostic Testing

Schumacher SC1281 100 Amp 30 Amp 6V 12V Fully Automatic Smart Battery Charger

The Schumacher SC1281 is a high power car battery charger that is the ideal buy for those who want to get their car battery charged in a quick time. With this smart car battery charger, you can get a fast boost charge of 30 amp for your car battery, moreover, it can offer you a charge of up to 100 amp that will make this car battery charger act as a jump starter.

Its super light weight is yet another great thing that makes this model one of the best-selling and top rated ones since it weighs only 12 pounds. The charger also comes up with a handle that makes its handling super convenient.

Despite being a little expensive than some of the other car battery chargers on this list, Schumacher SC1281 is still worthy of a good buy. Being a fully automatic car battery charger, it will stop charging the battery once the battery gets fully charged. This amazing feature will prevent the car battery from getting overcharged.

Furthermore, this charger features reverse polarity protection that ensures that the charger won’t get operational if you will be attaching the clamps to the wrong terminal of the battery, making things extra safer.        

Specifications: 

  • Brand: Schumacher
  • Model: SC1281
  • Charging Power: 30 Amps
  • Voltage: 12 volts
  • Product Weight: 12.65 pounds
  • Product Dimensions: 11 x 10 x 8 inches

Salient Features:

  • Fully automatic charger
  • Super powerful and fast charging
  • Auto voltage detection
  • Reverse hook-up protection
  • Multi-stage charging

Pros

  • Very easy to operate
  • Float mode monitoring
  • Powerful enough to charge even large batteries
  • Has a handle for easy carry
  • Extra precision safety

Cons

  • Confusing instructions
  • Flimsy clamps

 

6. CTEK (56-353) MULTI US 7002 12-Volt Battery Charger, Black

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

The CTEK 56-353 is a very simple and easy to use car battery charger yet it offers you all the features that expect from a good charger. The 8 step charging is the pick of the features of this amazing car battery charger that makes charging of the battery quick and safe.

Not just basic safety, this external car battery charger also offers you advanced safety features such as reverse polarity function and spark free charging so that you don’t have to worry about your battery getting a short circuit problem. Another great advantage that this charger offers you is that it is all waterproof and shockproof, and you can charge your vehicle with it in any weather condition.

The power pack charger for the car battery won’t just charge your battery really quick it will also help in maintaining the life of the battery. Additionally, it has a feature that detects and eliminates buildups in the battery to increase longevity. The charger also has the battery monitoring feature that keeps track of the battery health and gives suggestions regarding the maintenance so that any major problem can be tracked and solved before arising.  

Specifications: 

  • Brand: CTEK
  • Model: 56-353
  • Charging Power: 7 Amps
  • Voltage: 12 volts
  • Product Weight: 1.76 pounds
  • Product Dimensions: 7.52 x 3.5 x 1.89 inches
  • Warranty: 5-Year Limited Warranty

Salient Features:

  • Superb performance
  • 8-Step Charging System
  • Maintenance pulse charging
  • Patented desulfation functionality
  • Short circuit proof

Pros

  • Very compact design
  • Offers no-watch battery charging
  • Helps in boosting the car battery life
  • Multiple charging modes
  • East to store and transport

Cons

  • Not very budget friendly
  • Plastic clips can break

 

7. Optima 150-40000 Digital 400 12V Performance Maintainer and Battery Charger

Optima 150-40000 Digital 400 12V Performance Maintainer and Battery Charger

When it comes to buying an automatic car battery charger that can also charge and revive a dead car battery the options are usually not that much. Optima Digital 400 is an automatic smart car battery charger that will charge your battery until it gets fully charged and when the battery gets entirely charged it will stop charging automatically.

This car battery charging product from Optima is also the best maintenance charger for the car battery that you can find in the market. Furthermore, it has a very compact design still you will get a bundle of great features built in this small charger.

Another amazing thing about this heavy-duty car battery charger is that it uses a microprocessor that helps in determining various battery conditions so that it can offer optimal charging performance. Due to this superb feature, you will not only get fast charging for your car battery but also extended battery life.

If we talk about the usability of this charger, it is very easy to use. Additionally, it has an LCD screen that keeps you updated regarding the charging status of the battery. This car battery charging device is compatible with almost all major types of vehicle batteries that include lead-acid batteries, AGM batteries, and deep cycle batteries.

Specifications: 

  • Brand: Optima
  • Model: 150-40000
  • Charging Power: 4 Amps
  • Voltage: 12 volts
  • Product Weight: 1.6 ounces
  • Product Dimensions: 8.2 x 3.7 x 7.4 inches
  • Warranty: 3-Year Warranty

Salient Features:

  • Multi-purpose charger
  • Spark-free connection technology
  • Built-in battery health mode for maximizing battery life
  • Pre-charge battery status display mode
  • Dual-purpose hook and tilt stand design

Pros

  • Easy to set up and use
  • Spark-free connection technology
  • Over-temperature protection
  • Interchangeable battery clamps
  • Automatic multi-stage charging

Cons

  • Sometimes charge doesn’t last

 

8. MOTOPOWER MP00205A 12V 800mA Automatic Battery Charger, Battery Maintainer, Trickle Charger, and Battery Desulfator with Timer Protection

MOTOPOWER MP00205A 12V 800mA Automatic Battery Charger, Battery Maintainer, Trickle Charger, and Battery Desulfator with Timer Protection

If you are on the quest for a low price car battery charger then this MOTOPOWER MP00205A car charger is the most budget-friendly charger on the list that you can buy. This amazing low cost car battery charger might not be the most advanced charger when it comes to features but it is certainly one of the best chargers that you can get for a very reasonable price.

The charger is the best buy for those who are not in a rush to charge their car batteries, moreover, it is super easy to use for charging a car battery. Not just a charger, the MOTOPOWER MP00205A can also be used as a battery maintainer and battery desulfator for optimized battery performance without even putting any manual effort.

One of the best things you will like about this intelligent car battery charger is that it offers you multi-level safety protection. This protection feature will not only prevent the charger from getting battery overcharged but also avert reverse polarity and short circuit.  

You can also consider purchasing this product if you want a compact design trickle battery charger. So overall it’s a good pick for you to get, at an unbeatable price!

Specifications: 

  • Brand: MOTOPOWER
  • Model: MP00205A
  • Charging Power: 0.8 Amps
  • Voltage: 12 volts
  • Product Weight: 11.7 ounces
  • Product Dimensions: 4.1 x 2 x 1.5 inches
  • Wattage: 9.6 Watts

Salient Features:

  • Low-voltage activation & recovery
  • Timer protection
  • Thermal compensation for stable performance
  • Absorption mode to desulfate the cells
  • Energy saving and multi-level safety protection

Pros

  • Both compact & portable
  • Easy to operate
  • Extremely budget friendly
  • Repair cells damage
  • Spark-free safety
  • Restart charging when voltage drop

Cons

  • Take a very long time to charge the battery
  • Offers very low power

 

9. Schumacher SC1325 250 Amp 40 Amp 6V/12V Fully Automatic Smart Battery Charger with Engine Starter, Boost, and Maintainer for Cars, Trucks, SUVs, Marine, RV Batteries

Schumacher SC1325 250 Amp 40 Amp 6V-12V Fully Automatic Smart Battery Charger

Number 9 on the list is Schumacher SC1325 which is a heavy-duty car battery charger and weighs approx. 30 pounds. Not just this charger has the most incredible features that one can expect from a quality car battery charger but it is also the most expensive car battery charger.

Despite being a heavy weight battery charger, you won’t find any difficulties handling it since it comes with a retractable handle. Talking about the height of this high power car battery charger, it is almost 2-feet tall and is ideal for auto shops and garages. The charger features both charging and maintenance modes so you can both charge your vehicle battery and provide a boost-up power of up to 40 amp to revive a flat battery.

Moreover, you can jumpstart a car with this jump starter battery charger as it offers a 250 amp jump start charge that can be really helpful in an emergency situation. Even being a high power car battery charger, it offers you extra precision and protection. All thanks to the integrated micro-processor that is attached to this charger and enables multi-stage charging for extended battery life.  

The charger also comes with two-rotary switches and a multi-functional tester along with a voltmeter that will help in testing your vehicle battery so that you can get the best performance. In addition, it offers you multiple charging options for increased effectiveness.  

Specifications: 

  • Brand: Schumacher
  • Model: SC1325
  • Charging Power: 40 Amps
  • Voltage: 12 volts
  • Product Weight: 29.9 pounds
  • Product Dimensions: 12 x 12.5 x 23.3 inches
  • Warranty: 2-Years Warranty

Salient Features:

  • Micro-processor controlled with multi-stage charging
  • Fully automatic charging
  • Auto voltage detection
  • Reverse hook-up protection
  • multi-functional tester

Pros

  • Super-fast charging
  • Can bring even dead batteries back to life
  • Ideal for charging large size vehicle batteries
  • Temperature protection
  • Float mode monitoring for maintaining optimum battery charge

Cons

  • Very expensive compared to other car battery chargers on the list

 

10. ALLPOWERS 12V 7.5W Portable Solar Car Boat Power Sunpower Solar Panel Battery Charger Maintainer for Automotive Motorcycle Tractor Boat RV Batteries

ALLPOWERS 12V 7.5W Portable Solar Car Boat Power Sunpower Solar Panel Battery Charger Maintainer for Automotive Motorcycle Tractor Boat RV Batteries

Last but not least is the ALLPOWERS portable solar car battery charger that is the best option for you if you have been searching for an eco-friendly battery charger. This solar powered battery charger is not just for cars and other vehicles but you can also use it for motorcycles and boats.

The automotive solar battery charger enables you to charge your vehicle anywhere. You just need a good amount of sun exposure and this charger will get the job done for you. Even though the charger offers a pretty low charging power compared to other chargers on this list, it is still worth a buy.

The best thing that customers like about this top-rated solar car battery charger is that it is absolutely maintenance-free. Moreover, this battery charging product is water-resistant that will ensure constant performance and long-lasting durability and that is just what you want as a buyer!  

The vehicle battery charger comes up with a monocrystalline silicon solar panel that can work in any daylight conditions. Furthermore, it has a blocking diode build-in that prevents reverse discharging, helping in maintaining the lifetime of the battery along with extending the usage life. Overall, it is the best solar car battery charger in the market that you can buy and that’s the reason why it has made up to our top 10 list.   

Specifications: 

  • Brand: ALLPOWERS
  • Model: AP-SP18V7.5W
  • Charging Power: 0.2 Amps
  • Wattage: 7.5 Watts
  • Product Weight: 12.8 ounces
  • Product Dimensions: 13.54 x 5.28 x 1.65 inches
  • Warranty: 18-month warranty

Salient Features:

  • Monocrystalline Silicon Panel
  • 5% sun power efficiency
  • Avoids reverse discharge
  • Water-resistant for extra durability and performance
  • Completely maintenance-free

Pros

  • A versatile product, adaptable to different vehicles and situation
  • Easy to use
  • Long service life
  • Works in all day life condition
  • Helps in extending battery usage
  • Very friendly customer service

Cons

  • Takes too long to charge the battery entirely

Frequently Asked Question (FAQs)


How many amps should a car battery charger be?

Well, that depends on your needs if you are not in a hurry to get your car battery fully charged then go for the 2 amps charger. However, if you are looking for fast car battery charging options then go either for 6 amps or 10 amps.

Is it better to charge a battery at 2 amps or 10 amps?

If your car battery is large and you want to charge it then a 2 amps charger will take a lot of time to get it fully charged. In that case, getting a 10 amps charger to charge the battery seems a better option. On the other hand, if your car battery is small or medium then go for the 2 amps charging option.

Should I charge my car battery at 2 amps or 6 amps?

If you want to charge your car battery faster then consider charging it with a 6 amps charger because a 6 amps charger charges the battery 3 times faster than a 2 amps charger. Otherwise, you can go for the 2 amps if you are not in a hurry to charge the battery.

Can you overcharge a car battery at 2 amps?

Yes, your car battery can be overcharged even with a 2 amps battery charger and it can also cause the battery to die due to excessive gassing.

How long should I charge my car battery at 6 amps?

Charging your car battery with a 6 amps charger will approximately take around 8 hours to get fully charged.

How long should I charge my car battery at 2 amps?

Usually, a car battery is 48 amps so if you are trying to charge it with a 2 amps car battery charger then it will take around 24 hours to get your car battery fully charged.

What happens if you leave a car battery charger on too long?

If you leave a car battery charger connected to a car battery for too long then it will end up overcharging the battery and that’s not a good thing. Overcharging of the car battery results in the evaporation of acid that is inside the battery that ultimately causes issues for the battery in holding a charge.

Can I start my car with the battery charger still attached?

Yes, you can start your car with the battery charger still attached to it. It doesn’t make any difference if the charger is attached to the car battery or not as far as the battery is charged.  

Can a trickle charger ruin a battery?

Yes, a trickle charger can ruin your battery if you leave it for too long. Overcharging a car battery with a trickle charger can cause serious damage to it. However, there are some trickle chargers with an automatic switch-off function that automatically stops charging once the battery is fully charged.   

 

 

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