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Is the car battery / starter battery weak or defective? We know the symptoms, we know how the exchange / change works and we also have some information about the costs involved! An optimally working car battery, which is also referred to as a starter battery, is an important prerequisite for the combustion engine in the car to be started without a separate help. The battery supplies the starter and the vehicle electrical system with electrical energy, for example for the ignition coils, comfort and entertainment electronics or various control units. When the engine is running, the battery is powered by the alternator as a voltage source superseded and through this charged. Batteries are generally wearing parts in cars. The constant thermal stress from cold and chemical or age-related wear can be responsible for the fact that the capacity of the battery is no longer sufficient.
Signs: weak, empty, defective car battery
Most often, the motor jumps with a defective battery not on. Often he just jumps bad or only after several attempts at. The starter rotates slower than usual or just gives a "clicking sound' by himself. The electrical consumers such as the radio or the light have various misfires during a cold start. Various error memory entries due to insufficient power supply occur. To be safe, especially in winter, we recommend at least one Car charger / a battery pulser to have at home. With older vehicles / batteries, this saves a lot of unnecessary stress.
What can a defective / weak car battery be mistaken for?
In the workshop it can be determined whether the cause of the problems that have arisen is actually the battery or another component such as the Starter, is. For this purpose, the battery is first tested with a special test device. In this way, the overall condition can be assessed. So it can be at the same time that only vergessen has been switched off all consumers such as the light and the battery has discharged as a result, but it is still in good overall condition.
Leakage currents (for example due to a defective keyless door handle etc.) can be a reason for the slow but steady discharging of the car battery. In addition to checking the battery, the battery is also checked charging circuit and the alternator. If the engine at Jump start attempt with jumper cables starts without any problems, there is a high probability that there is a problem with the battery. If, on the other hand, the vehicle does not start even when the battery is bridged, then the Starter malfunction.
Changing the car battery!
It used to be necessary to regularly replace or service the battery with distilled water. Such a process is with "maintenance-free batteries“ No longer necessary/possible today. With regular use, they usually have a service life of around 7 to 10 years and then have to be replaced with a new car battery. Changing the battery in modern vehicles is quite complex. It is the case that the starter battery is now often installed in the car in a particularly "unfavorable" way.
An exchange then calls for the beforehand Disassembly of other parts. On the other hand, the new car battery often has to be replaced after a change be stored in the control unit. An important reason for this is that the new battery is charged with different cycles than the old one. A possibly existing one Start-stop system may need to be retrained. Work on the car battery should therefore always be carried out in a specialist workshop, primarily for safety reasons. Changing the battery is routine work here. In addition, the old battery can be used in this way directly and without Battery deposit be disposed of in an environmentally friendly manner.
How much does a new car battery cost?
The material costs of a new battery are around 50 to 400 Euro. The costs are primarily dependent on the vehicle and the necessary battery power dependent. Characteristic of this is the specification in Amps (A). Well-known manufacturers of vehicle batteries are Bosch, Banner or Varta. Incidentally, it is worth investing in a high-quality battery. Especially if the car is left outside a lot in winter. Voltage values, pole position and shape must match the respective car model and comply with the manufacturer's specifications. Most of the time changing the battery only takes 30 minutes. Sometimes it is already done after 10 minutes. Based on an hourly rate of 100 euros, this results in labor costs of around 20 to 50 euros. With our calculation, the driver arrives at total costs of around 70 to 500 euros. Attention: Depending on the vehicle type, you can also two batteries be installed. If both need to be replaced, the costs will increase accordingly. As a rule of thumb, about 2 euros are incurred per Ah.
Important aspects of the car battery!
On the one hand, the car battery supplies the Starter as well as that at the same time electrical system with electrical energy. For example for ignition coils, entertainment and comfort electronics as well as various control units. When the engine is running, the alternator takes over from the car battery as the source of the voltage and is recharged by it. A short-distance driver rarely or never fully charges the car battery. This leads to a higher number of discharge and charge cycles and thus to a higher wear respectively an early one aging. The condition of the battery should therefore be checked at regular intervals - for example once a year as part of a winter check - be checked. The capacity of the battery is given in ampere hours. The value indicates how much current can be drawn in a specific time at a defined voltage. Values between 60 Ah and 200 Ah are characteristic.
For example: A car has a vehicle battery with 12 V and 200 Ah capacity. It was forgotten that Sidelights (4 x 15W) off. The current required for this is determined with a consumer power (4 x 15W) divided by the voltage of the battery (12V). Accordingly, a current of 5 amperes flows. So it is possible that the 200Ah car battery can withstand this load for over 40 hours (200Ah through 5A). In practice, however, it can be less because the battery is usually not new and discharge is not uniform. A radio in the car with 200 watts of power, the battery lasts at best 12 hours. Also play other consumers like one immobilizer, a Alarm system or an always active one Keyless Go included in the calculation. New battery management systems can warn of a low charge level before the starting process is no longer possible. There is usually a message about this in the instrument cluster from the vehicle or any Vehicle APP.
The following note is essential: For safety reasons, tuningblog recommends all repair, inspection and maintenance work exclusively to be carried out in a specialist workshop! Although our information is summarized to the best of our knowledge and belief, we cannot assume any liability for the content. All information is therefore "without guarantee".
Of course, that wasn't the end of it!
In this tuningblog category there are guides and instructions for common defects/repairs on the vehicle and for installing accessories/tuning parts. Our articles explain in a simple way common defects and the corresponding repairs, as well as explaining how the first signs of a defect become noticeable. In most cases, we also have initial clues to the repair instructions in our repair instructions approximate The costs of the pending repair are listed. The goal of our subcategory “Auto Repair Guide“ is to create a head start in knowledge for the next visit to the workshop with initial tips. This may save you from tedious troubleshooting and small things can perhaps be done directly on your own. The same applies, of course, to the installation of accessories/tuning parts. Here, too, we would like to help with the implementation with instructions and tips. There are many other posts on this as well. Below is an excerpt of the last and HERE there are all previous instructions:
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