Top Top

For everything your car needs.
Workshop Finder

Workshop Finder

Bosch Car Service - Battery Guide

What are the points to watch when buying a battery?

The constantly increasing amount of electrical equipment in cars and new technologies such as start/stop systems or braking energy recovery demand high-performance batteries. Conventional sources of power for example are soon overtaxed by frequent engine starting.

Bosch battery: Start/stop modelBy contrast, the special battery model such as the SM Mega Power Silver from Bosch provides far more power and can withstand a great number of charging cycles. The experts at your workshop will be pleased to advise you further, as the cheapest battery is not always the best choice.

To find out more about the full range of Bosch batteries, click here.

Why is the battery check so important?

Have you any idea about the current state of your battery? Most drivers probably do not give it a thought until they have a breakdown or their vehicle refuses to start. The best solution is to have a regular battery check performed at a Bosch Car Service workshop. It makes more sense to spend a few minutes in the workshop than to wait around for hours for a breakdown service to turn up.

Mechanic performing battery checkYou can also perform this check yourself with the C3 or C7 battery charger from Bosch. This ensures that the battery is always ready for action and fully charged – quickly, easily and completely without risk. With the C7 it is even possible to re-charge exhaustively discharged batteries - at the press of a button.

What is the main cause of breakdowns?

Would you have known that one in three breakdowns is the result of a defective battery? But it is not always the actual battery that is the problem. Other components may also be the cause of failure. In other words: Replacing the battery will not automatically solve the problem if your vehicle refuses to start. So it is advisable to look into other possible causes to avoid yet another trip to the workshop – this saves time, money and any amount of bother.

What are the most common causes of failure?

In addition to excessive storage times, one of the main reasons for battery failure is so-called exhaustive discharge. In this process the entire capacity is drawn off at once. The damage to the battery in this condition may be considerable depending on the length of time for which the vehicle is not driven. Consequences: Loss of power, re-charging not possible, substantial curtailment of service life.

Why does the winter present particular problems?

You would be surprised: batteries like it cold. During the hot summer time abrasion is far higher than in cold winter months. However, due to viscid, cold engine oil the battery has to overcome higher demands which then leads to defects.

9 reasons for a flat battery:

Short circuit in the electrical system

In the event of a short circuit, a considerable amount of current is drawn from the battery in a very short time and converted into heat.

Leaving the vehicle lights switched on

The vehicle lights consume a lot of power and should therefore be switched off on parking the vehicle.

Defective alternator

If the battery is not charged by the alternator whilst driving, it is the only source of power for control units and other electrical equipment – until it is completely flat.

Defective alternator regulator

If the alternator regulator is defective, exhaustive discharge will occur as a result of inadequate charging or the battery will be overcharged.

Control unit fault

If control units are not shut down when the engine is switched off, they continue to use power and thus cause exhaustive battery discharge.

Retrofitting of electrical equipment

Extra electrical equipment such as seat heating generally draws power through the cigarette lighter and very quickly leads to battery discharge.

Fitting of incorrect battery

Defective batteries should always be replaced with one of the same type so as not to shorten the service life.

Short journeys

On short journeys, the amount of power consumed is more than the alternator can supply. So it is best not to use unnecessary equipment (seat heating, radio, etc.) in winter.

Radio, TV, DVD, refrigerator units

Radios, navigation systems and other entertainment devices use a lot of power and will cause exhaustive discharge if the battery is not sufficiently re-charged.

How can you give your battery a helping hand?

The Bosch C3 and C7 battery chargers bring batteries back to life quickly and easily. The C7 is even capable of effortlessly re-charging exhaustively discharged batteries. So you can get through the winter without any problems. For further information on battery chargers from Bosch, useful accessories and charging car batteries, visit: Battery Chargers website.

How safe is it to re-charge batteries?

No need to worry! The electronic charging system of the Bosch C3 and C7 battery chargers automatically checks how much charge your car battery actually needs or can take – irrespective of the type of battery concerned. But re-charging is entirely safe in any case: One-button operation makes incorrect use virtually impossible and the terminals remain de-energized if they are not or are incorrectly connected to the posts. This means you can charge your car battery without any risk and, if required, without removing it from the vehicle.

7 ways of extending service life

1) Have the voltage, charge level and starting power of the battery, as well as power loss in the car, checked at regular intervals.

2) It is advisable to remove the battery before taking a car out of service. Our advice: Store it in a cool place.

3) Inspect the battery at least twice a year - once a month in winter (frosty conditions) in the case of older batteries.

4) Make sure the battery is firmly in position in the battery compartment and that the metal parts of the battery have been greased and the terminals firmly tightened.

5) Wherever possible, avoid exhaustive discharging of the battery (caused by leaving the lights switched on, for example).

6) Switch off all unnecessary equipment such as radio, air conditioner or auxiliary heater before starting.

7) After a lengthy period of non-use, remove the battery and connect it to an electronically controlled charger.

High quality service for your car

Bosch Car Service - the car experts. This is the right address for outstanding service quality for your car. Whether you are looking for advice, repair or service work we can offer the full package - coupled with the unique expertise of Bosch, the world's leading original equipment supplier for virtually all makes.

The experts from Bosch Car Service are equipped to deal with the latest automotive technology in vehicles of all makes and keep them in perfect working order. And so your car is always in the best possible hands when you take it to Bosch Car Service for maintenance and repair.

For everything your car needs!

Is there anything else you would like to know?

We would be delighted to answer any questions you may have. Please contact us. We look forward to hearing from you.