Your car will only start with a functional and charged car battery .

What is the best car battery for you? The most popular car batteries can be found in the comparison table .

n some vehicles, it can happen that the car battery is defective or has discharged. The risk of such complications increases with increasing battery age . A new copy can be used quickly. It is also possible to bridge a discharged battery with a charged one. So there are many good reasons to always store a replacement in the garage.

Without it, the car won’t start: a car battery is an integral part of a roadworthy car

1. Car batteries: How To Find Your Best

The most important task of a car battery is to provide the electricity necessary to start the car. It also supplies electrical functions such as lighting, radio or heating when the engine is switched off. Find out which model is particularly recommended here.

Voltage of a car battery

The electrical voltage in volts (V) indicates the force with which the current flows. In the case of car batteries, it is 12 V. This clearly distinguishes the component from those of other vehicle types. For example, a truck battery has a voltage of 24 V.

This is the best 12 V car battery

VartaSilver Dynamic AGM 12V 70Ah E39TO OFFERPRICE COMPARISON

  • Pole arrangement 0
  • Floor molding type B13
  • Cold test current 760 A.
  • The price display does not always include the battery deposit of 7.50 euros.

Capacity of a car battery

The capacity in ampere hours (Ah) denotes the maximum amount of charge – i.e. the amount of electricity that is in the battery when fully charged. It is at least 30 and a maximum of 120 Ah. Every time you start your car, the engine takes part of the load. Any other electrical application you use with the engine off will also reduce the available charge.

If you regularly use electrical functions in your car when the engine is switched off – for example, a running car radio while changing tires – you can select a higher Ah value. As a guideline: mid-range cars require a capacity between 30 and 70 Ah .

There is the best car battery up to 70 Ah

VartaBlue Dynamic 12V 60Ah D59TO OFFERPRICE COMPARISON

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  • Floor molding type B13
  • Cold test current 540 A
  • The price display does not always include the battery deposit of 7.50 euros.

The reserve capacity

If the alternator fails, the reserve capacity ensures that the electrical systems are still supplied with power for a while. Manufacturers specify the value in minutes. This means that if the alternator fails, you have x minutes before the reserve is emptied. The following applies: the higher the reserve capacity, the better .

Dimensions

The car battery must of course also fit into the vehicle. Therefore, there are standard car and truck sizes that you have to follow. A specimen for cars is often characterized by a height and width of 175 mm and a length of 278 mm. It weighs around 18 kg. But there is also a maximum size of 190 x 175 x 393 mm . Truck batteries with dimensions of 240 x 273 x 518 mm and up to 65 kg are significantly larger and heavier.

By the way: Other properties of your vehicle determine which battery it needs to be. It is crucial, for example, whether it is a diesel or a petrol engine because the performance of the engines differs.

2 . These are the differences in car batteries

In the following we present AGM batteries, EFB batteries, lead-acid batteries and lithium-ion batteries with their advantages and disadvantages.

AGM batteries: Absorbent Glass Mat

Advantages :

  • This type of battery is found in new start-stop vehicles and is considered to be of very high quality.
  • The products can cope with numerous charging cycles, which, however, also require frequent starts and stops

Disadvantage :

The high price.

Unfortunately, a simple car battery cannot be replaced with this variant because it is sensitive to heat and therefore not suitable for the engine compartment. In new vehicles, the model is either in the trunk or in the passenger compartment.

EFB batteries: Enhanced Flooded Batteries

EFB batteries are also suitable for cars with a start-stop function. In principle, they are lead-acid batteries that are adapted to the special requirements of modern vehicles.

Advantages :

  • Stabilization of the lead plates
  • Cheaper than AGM batteries and better coping with higher temperatures

Disadvantage :

EFB batteries are more expensive than lead-acid versions.

Car battery: This is our price tip

VartaBlue Dynamic 12V 44Ah B18TO OFFERPRICE COMPARISON

  • Pole arrangement 0
  • Floor molding type B13
  • Cold test current 440 A
  • The price display does not always include the battery deposit of 7.50 euros.

The lead-acid battery

It is one of the most common types of batteries and is also used as a starter battery in the car.

Advantage :

The lifespan is quite long.

Disadvantage :

  • Individual parts such as the electrodes can easily wear out. This is why alternative lead-gel batteries are often used
  • Due to the high lead content, it is considered to be harmful to health and the environment

Lithium ion batteries

These are significantly less susceptible to wear than lead-acid batteries and are also used in cars, but mostly in the form of batteries for electric cars.

Advantages :

  • The high energy density
  • Long lifetime

Disadvantages :

  • Relative expensive
  • Severe overheating can cause fires
  • Rapid aging, ie decrease in loading capacity

3 . Car batteries in comparison: This model suits you

Which battery is the right one for your purpose depends on numerous factors.

Car battery for vehicles with start-stop system

For cars with a start-stop system, you need a special battery model. It is often an AGM battery, but the cheaper, but less robust EFB batteries are also suitable. A suitable battery is imperative because the constant starting and stopping of the engine, which effectively reduces fuel consumption, consumes more battery power instead .

Without a special battery, you cannot supply your vehicle with sufficient starting energy and have to bridge it more often. However, please note that the intensive load on the battery reduces its service life. You therefore need a replacement every 5 years . When purchasing, indicate that this is the case or look for suitable models in retail that support the start-stop system.

This is the best car battery with start-stop systems

VartaSilver Dynamic AGM 12V 70Ah E39TO OFFERPRICE COMPARISON

  • Pole arrangement 0
  • Floor molding type B13
  • Cold test current 760 A.
  • The price display does not always include the battery deposit of 7.50 euros.

Starter battery with energy recovery

Some vehicles have a recuperative brake: with each braking operation, it recovers energy that it feeds back into the system, i.e. directly into the car battery. This means you benefit even more from a well-charged car battery. Incidentally, car manufacturers combine the technology with the start-stop system. Which energy recovery starter battery should you buy? Be sure to follow the manufacturer’s instructions because the braking system works closely with the battery. Deviations from important properties can lead to problems.

Starter battery for campers and boats

In order to be somewhat self-sufficient on the road, you cannot avoid the high capacity of your battery in the motorhome. You can find variants with 12 V on the market, but you can also opt for a power bundle with 220 V. In a motorhome or in a boat you also have to provide 2 batteries, one as a classic starter battery and one as a supply battery. The latter provides you with electricity for many hours if no external electricity is available.

This is the best starting battery

VartaSilver Dynamic AGM 12V 70Ah E39TO OFFERPRICE COMPARISON

  • Pole arrangement 0
  • Floor molding type B13
  • Cold test current 760 A.
  • The price display does not always include the battery deposit of 7.50 euros.

High cold start current value for difficult winter starts

Do you know these cars that hardly want to start in winter? Most likely, the cold start current value of the installed car battery is very low. The term (also called cold test current) refers to the maximum current that the battery delivers within 30 seconds at low temperatures before the battery voltage is too low for this test. The higher the value, the more reliably the connected car starts. If you often struggle with the problem, you should look specifically for a battery with a high cold start current value .

4 . Car batteries in the test: this is what Stiftung Warentest & Co. say

The Stiftung Warentest has already tested car batteries three times in 2004, 2007 and 2012. In the most recent test, the focus was on batteries for cars with a start-stop system, because this technology is very common in modern cars. 7 such models came under the microscope, including 4EFB and 3 AGM batteries for compact to medium-sized cars. In addition, the foundation dedicated 3 “normal” batteries. The testers came to the conclusion that all test products are good and that the cheap ones were particularly convincing .

Details about the test

The testers examined the products in the following categories: suitability for start-stop, durability, overcharge resistance, usage properties and compliance with the performance specifications. Some categories did not apply to certain products due to their technical characteristics. In addition, there were devaluations if the cold start current was only sufficient or insufficient . The batteries in comparison come from the manufacturers JCI / Varta, Banner and Exide (AGM) or Moll, Banner, JCI / Varta and Excide (EFB). Banner, Bosch and Exide are represented in the starter battery area.

Best in comparison: the test winner

All AGM batteries received the “Good” quality rating, although they are only suitable for low temperatures. The winner is the JCI / Varta product with a grade of 1.6. The best ratings are the suitability for start-stop, the usage properties and the agreement with the performance data.

In contrast, Moll was best in the EFB selection with a “very good” (grade: 1.3), mainly because of its suitability for start-stop and relevant performance data. All other motor vehicle batteries can be decorated with a presentable “good”. The best product in the starter battery area is the Banner product with a grade of 1.4. But a second model was awarded a “very good”: it is the Bosch battery .

Results of older tests

Very good and good grades as far as the eye can see. But how did car batteries fare in the two previous tests? There is a clear deviation from the comparison from 2007. Only 3 out of 12 products were able to achieve a “good”. These are products of the brands Berga, Opel and Moll . The other models were devalued, for example, because of false promises by the manufacturers. Among them was a battery from Exide, one of the producers who later received good grades and apparently could improve.

The conclusion from 2004 already makes the foundation clear in the title: Unreliable. How did the tested car batteries really look like? Of 16 models, only 3 are “good”. In this test situation too, devaluations occurred due to incorrect manufacturer promises . In addition, poor durability was one of many problems that became noticeable. 3 car batteries received the title of test winner. They come from Banner, Moll and Arctic.

Car battery: This is our buying tip

VartaSilver Dynamic AGM 12V 70Ah E39TO OFFERPRICE COMPARISON

  • Pole arrangement 0
  • Floor molding type B13
  • Cold test current 760 A.
  • The price display does not always include the battery deposit of 7.50 euros.

5 . Buy cheap car batteries: that’s how much you have to spend

Many cars need to change the batteries over the course of their service life. The costs can add up quickly. It is therefore worth paying attention to the prices. By the way: If you want to buy a new car battery, you should also plan additional costs for the installation. A change costs about 20 euros .

Car batteries up to 70 euros

Branded products from Varta, Bosch or Banner are also among the cheap car batteries up to 70 euros . Usually the capacity is relatively low if the model is cheap. It is often in the range from under 40 to 60 Ah. The value for the cold test current also meets only minor requirements. They are almost always simple starter batteries that are not suitable for start-stop systems. You have to pay more for them. But older cars can be equipped well for little money.

This is the best car battery up to 70 euros

VartaBlue Dynamic 12V 44Ah B18TO OFFERPRICE COMPARISON

  • Pole arrangement 0
  • Floor molding type B13
  • Cold test current 440 A
  • The price display does not always include the battery deposit of 7.50 euros.

Car batteries between 70 and 200 euros

The products in the medium price range between 70 and 200 euros are diverse. Capacities between 60 and 110 Ah are typical, but you will also find significantly lower or higher values. For the manageable budget, every common type of battery is also available, i.e. in addition to the starter battery, you can also get a supply battery for motorhomes or a start-stop battery for modern vehicles. Incidentally, individual models are not characterized by the classic 12 V voltage, but only bring 6 V with them.

This is the best car battery up to 200 euros

VartaSilver Dynamic AGM 12V 70Ah E39TO OFFERPRICE COMPARISON

  • Pole arrangement 0
  • Floor molding type B13
  • Cold test current 760 A.
  • The price display does not always include the battery deposit of 7.50 euros.

Car batteries from 200 euros

The luxury class from 200 euros shines with impressive values: You will certainly find specimens with capacities of over 200 Ah for the generous budget. But even if you only want a value of 70 Ah, the selection is large. In addition to many powerful starter batteries, you will discover various products from the start-stop battery and supply battery categories. Another interesting specialty: The values ​​for the cold test current can be over 850 A, which is very high.

This is the best car battery from 200 euros

LiontronLithium LiFePO4 LX Smart BMS 12.8V 100Ah (LI-SMART-LX-12-100)TO OFFERPRICE COMPARISON

  • The price display does not always include the battery deposit of 7.50 euros.

6 . Conclusion: the best car battery for you

Would you like to provide modern vehicles with good performance at a reasonable price? Then you cannot avoid a high-quality car battery.

  • Modern vehicles with a start-stop system require AGM or EFB batteries, the former need low temperatures and are more expensive
  • In addition, the lead-acid battery in older cars and the lithium-ion battery in electric vehicles play an important role
  • Test winners in recent tests by Stiftung Warentest include Moll and JCI / Varta
  • Branded devices are often available at prices below 70 euros , while you can get high-performance batteries for 200 euros and more.

On this page you will discover a wide selection of suitable car batteries with the right power for your vehicle. Find a suitable copy right away. We hope you enjoy your new car battery and have a good trip.

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