You will find a lot of car battery chargers of different brands in the market. You may find them very effective and efficient to charge your car battery. But when you need to charge a dead car battery, most of them will fail.   Yes, all car battery chargers don’t have the ability to charge a dead car battery. But there are some chargers that are able to do so. Here we will discuss such chargers that can charge even a dead car battery very efficiently. So, let’s see our top 3 picks. 

Top 3 pick



Expert rating

Check price

NOCO GENIUS10, 10-Amp Fully-Automatic Smart Charger

NOCO GENIUS5, 5-Amp Fully-Automatic Smart Charger

Battery Tender Plus Charger and Maintainer


A car battery charger is a device that is used to charge or recharge a car battery. They can provide a consistent flow of power for recharging or maintaining the charge of a vehicle’s battery when discharged or fully charged. Generally, car batteries require a 12-volt DC type current to charge. But the electrical outlets put out 120-vol AC type current which is not suitable to charge the car battery. Battery chargers convert this 120-volt AC drawn from an electrical outlet to a 12-volt DC outlet to make it suitable for charging the battery. Since they don’t have dedicated charging ports, they come with special cables that connect to the battery terminals.

Now, if we consider a jump starter, it is a portable battery pack designed to jump-start a car when the battery is dead. It can jump-start the car battery without the help of another car or source of power. This comes with specialized jumper cables that can draw power directly from the jump starter’s battery when the cables are connected to a dead battery. It actually provides a kick to start the battery without providing it any charge through a quick burst of power. These devices are not able to charge a battery.


It can charge your dead battery. Most of the regular chargers are not able to charge a dead car battery. But if you have a special charger that is able to charge a dead car battery then you don’t have to worry about it.

It will save your car battery. As it can make your car battery run again, you don’t have to worry at all about your dead battery.

It saves money. When your car battery is dead, you need to consult a mechanic or an expert to fix the battery. But if you have a charger that can charge a dead battery, then you don’t have to do so. Therefore, it saves your extra cost.

It also provides other features like a regular charger. If you choose a good product then you will get the best charging features along with the capability to charge you dead battery.


The ability to charge a dead battery

Not all car battery chargers have the ability to charge a dead battery. Some charger comes with this feature and some don’t. You will find a number of chargers out there. But if you want to charge your dead car battery, you have to choose the one that can do so.

So before buying one, take a proper look at the features of the battery and check if it can charge a dead battery or not.


You check this feature of the battery. If you want to carry the charger in your car all the time, you must buy one that is easily portable. Best battery charger brands focus on keeping their products small and light which makes them portable. You can carry them anywhere in your car and use them when you need them. So, take a look at the weight and size of the charger and inspect how much portable the charger is.


Most of the batteries come with 12 V. so, you need a charger that can provide enough power to the battery. If the charger doesn’t deliver enough power, it would be too weak to strengthen your battery.

For a battery charger, the more powerful the charger is, the quicker it would charge your dead battery. Also, if the charger has the proper power to provide the necessary voltage that a battery needs, it will ensure safe and fast charging to the battery.

Sometimes different batteries come with different power requirements. You need to buy a charger that copes with the power requirement of your car battery. So, before buying one, inspect your car battery power requirement and then choose the one that goes with your battery.

Easy to use

The charger must be easy to use. If a battery charger is not easy to use, it definitely not going to help you as much as you expected. Some battery chargers may come with complex features that are not easy to maintain. But for avoiding such complexity while using, you can choose a charger that is easy to use and maintain.


Most of the time you will use your battery charger outside your garage or parking place. So, it would be better if your charger is waterproof. Also, a car battery charger takes a long time to charge a battery fully. You may not be able to inspect the charging. So, if it a waterproof charger, then you don’t have to worry about it.

Protection from water and dust is an important feature, often denoted by the IP rating system that measures how resistant something is to these elements. Basic heat protection also goes a long way towards protecting the interior components of a charger. 


The best-rated car battery charger usually comes with indicators. These are very useful in keeping track of the performance of the battery. Thus, they help you to know when it is charging when it is full, and when it requires recharging.

Indicators are also integrated with safety features. An excellent charger will state when issues arise. Some of these include overcharging or reverse polarity. With indicators, you are less inclined to make costly mistakes.

Safety features

A good battery charger must have some safety features. It should be temperature resistant, it should not overcharge the battery, or it should maintain a constant flow of power. Chargers that come with such features are very efficient and ensure safe charging. As you would not be around all the time while charging, the charger should have its features to keep the battery safe. So, take a look one the safety features of the charger that you are going to buy.

Time of charging

The average charge time of a car battery charger will vary, depending on the charger itself and the car battery. Some take a very short time, some may take a long time. On average, most chargers take between two and ten hours to charge a battery completely. Small, portable chargers tend to take longer so larger garage-only models may be a better purchase if you want the fastest charge times. 

Additional features

If you want to get more out of a car battery charger, extra features and accessories are a must. Things like small device charging ports, built-in radios, and rapid-charging functionality all allow you to get more use out of the charger and more value for your dollar. Even basic add-ons like an LCD screen led indicators or a waterproof or spark-proof exterior help with usability and durability.

Best car battery charger for a dead battery

Top pick 1

Product Name: NOCO GENIUS10, 10-Amp Fully-Automatic Smart Charger

Product Description: When it comes to charging a dead battery the no charger is comparable with the chargers of the NOCO brand. One of them is the NOCO Genius 10. It is a 10- amp full automatic smart charger that can charge your dead battery very efficiently and designed for 6V and 12V batteries. The charger can charge batteries as low as 1-volt. The best feature is that you can use the all-new force mode that allows you to take control and manually begin charging dead batteries down to zero volts. The charger works as an all-in-one solution. It can be used as a battery charger, battery maintainer, trickle charger, plus battery desulfator. It is compatible with lead-acid automotive, marine, and deep-cycle batteries, including flooded, gel, AGM, and maintenance-free, plus lithium-ion batteries.

  • Dead battery charging
  • Safety features
  • Easy to use
  • Value for money


The NOCO Genius 10 is an effective charger for dead batteries. Also, with its safety features, it has become a unique battery charger to the customers. Using its integrated thermal sensor, it can detect the ambient temperature and alters the charge to eliminate over-charging in hot climates and under-charging in cold climates. Also, it can detect battery sulfating and acid stratification to restore lost battery performance automatically. The plus point is that you don’t have to worry a bit to maintain it. It provides a zero overcharge rate with 24/7 using capability. The charger also giving you the opportunity of charging and maintaining cars, motorcycles, lawnmowers, ATVs, lawn tractors, trucks, SUVs, boats, PWCs, classic cars, and more.


Can charge a dead battery.
Works as a trickle charger and desulfator.
Maintains a car battery.
Integrated thermal sensor.
Restores battery.


Not a very fast charger.

2) NOCO GENIUS5, 5-Amp Fully-Automatic Smart Charger

Another NOCO Genius charger on our list. Genius 5 is also an effective charger to charge a dead car battery and very similar to NOCO G3500, but 34% smaller and delivers 65% more power. This one also comes with the features of battery maintaining, trickle charging, and battery desulfation along with battery charging.

You don’t have to worry about its compatibility as it is designed for charging lead-acid automotive, marine, and deep-cycle batteries, including flooded, gel, AGM, and maintenance-free, plus lithium-ion batteries.

This maintenance-free charger also has an integrated thermal sensor and ensures safe charging. Like the first one, it also can charge batteries as low as 1-volt. Or use the all-new force mode. Overall, it completely worth your money.  

  • Charges dead battery.
  • Maintenance-free.
  • Safe charging.
  • Comes with an integrated thermal sensor
  • Cannot charge dead AGM battery.
  • Not a very fast charger.

3) Battery Tender Plus Charger and Maintainer

The next choice in our list is the Battery Tender Plus Charger and Maintainer. With an excellent design, it also provides efficient charging performance. This one also can charge a dead battery.

Like the other two choices in the list, this charger is also compatible with a wide variety of vehicle batteries. The best feature is that it comes with the dual charging mode. The first one is float charging. This mode allows you to charge when you aren’t close to the battery. The other is the full charge mode.

The charger can tickle charge your battery without harming your battery. Also, it has a very quick and safe charging feature. This temperature adjusted charger can charge a dead battery and maintain it at the best voltage.

  • Comes with all required accessories.
  • Safe to use.
  • Easy to use.
  • Compatible.
  • Cannot charge the dead battery quickly.


Q: What is a car battery charger used for?

A: A car battery charger allows you to recharge your car battery or revive your dead battery. Smart chargers are designed to observe the battery’s status. It can observe possible defect or anomaly and begins to correct the defect.

Q: How long should you charge a completely dead car battery?

A: Recharging a dead car battery can take at least 4 hours, and even up to 24 hours depending on the power of the charger and the size of the battery. Usually, battery chargers put out around four amps, but there are more powerful chargers out there.

Q: Can a completely dead battery be recharged?

A: A car battery is considered discharged when the voltage drops below 12 volts. Some battery chargers are capable to charge dead batteries. Most of the time, you don’t even have to remove the battery from your vehicle.

Q: Can a battery be too dead to charge?

A: No, the battery cannot be too dead that it cannot be jump-started. A dead battery can be alive by a jump-start, but there are some guidelines that have to be followed to jump-start a dead battery.

Q: How long can a car sit before the battery dies?

A: Car batteries can keep their charge for two months or longer without running. The specific time depends upon the potency of your battery and the draw of your car.

Final words

If your car battery is dead for a long time or damaged badly, it may not be recharged. Otherwise, you can do so. And here are the choices for such chargers that you can buy for your dead battery.

Click Here to Leave a Comment Below