With winter coming, cars tend to suffer, the most common case is to have troubles starting your Bmw Serie 7 early in the day with very low temperatures. Generally this is related to problems recharging the battery of your Bmw Serie 7 . There are several causes that can describe why your battery does not recharge correctly anymore, and today we will try to help you to fix this issue that can prevent you from using your motor vehicle. To get this done, first we will describe how recharging your car battery works, then the different problems of recharging a Bmw Serie 7, and finally how to recharge an empty car battery.

charging-problem-battery-bmw-serie-7

How does recharging the battery of a Bmw Serie 7 function?

Before we describe the different complications of recharging the battery on a Bmw Serie 7 , we will describe to you how its recharging system functions so that you can figure out the complications you are facing. A motor vehicle battery works like a phone battery, it will store energy to start your Bmw Serie 7 , turn on your headlights, listen to music, lower your power windows… However all these actions will consume energy and it may deplete the energy reserve that your battery can store. To handle this issue, the engineers have produced a component called the alternator , this component will use the energy generated by the engine of your Bmw Serie 7 to create energy thanks to a copper coil and a magnet. This energy will recharge the battery of your motor vehicle . However, keep in mind that this process can only work when your motor vehicle is running, using electrical elements of your motor vehicle when it is stopped will decrease the energy reserve of your motor vehicle. It is considered that a battery of a xxx has a life span of 3 to 5 years.

Problems recharging a Bmw Serie 7’s battery

We will now describe the different battery charging complications on a Bmw Serie 7 you may be victim of. If your battery is not recharging because there is necessarily a issue in your electrical installation, we will now see the different cases.

Battery charging problem on Bmw Serie 7: My battery is discharging regardless if I am recharging it with a particular charger

In this first circumstance, it is quite possible that your alternator is dead , in truth, if you manage to recharge your battery with a charger and your Bmw Serie 7 to start, the problem obviously originates from your alternator which should not be able to create any more current.

Battery charging issue on Bmw Serie 7: My motor vehicle shuts off and does not start regardless if I have charged the battery

If you have recharged your battery and you have managed to start your Bmw Serie 7 but it switches off although you are driving and then does not start, the problem with recharging the battery of your Bmw Serie 7 is that your battery no longer holds the charge .

Battery charging issue on Bmw Serie 7: My battery is discharged although it is new

.
If you’ve just bought a battery and it discharges although you’re driving, the issue most likely originates from your alternator. It cannot originate from your battery, which is new and consequently holds the charge. The second possibility is that you have a ground somewhere in your electrical system.

How to fix the issue of battery charging on Bmw Serie 7?

We will now give you the solutions according to the issue you are facing. Here are the different complications and their solutions:

  • Faulty alternator: You can try with basic mechanics to verify it with a pressure gauge to discover if it’s producing power. If it doesn’t, replacing it is the best solution, depending on your motor you will pay a few hundred euros. This fix is feasible in case your alternator is accessible.
  • Battery that no longer holds the charge: In such a case, the purchase of a new battery is the only realistic solution. Indeed, if you have already recharged it but it is still empty because it is good to be replaced, count between 60 and 100 euros depending on your engine.
  • Ground in the electrical circuit: If you cannot start your Bmw Serie 7 but your alternator and battery are in good condition, it is possible that you have a ground on your wiring harness and that you lose energy, a verify by a motor vehicle electrician is in this case necessary.

How to recharge an empty battery of a Bmw Serie 7

At last, to recharge the empty battery of a Bmw Serie 7 there are only few solutions, using a battery charger is the most efficient solution, you can locate some for 50 to 100 euros at vendors like Oscaro. Otherwise you can use cables that will only provide the energy needed to start.

To discover more tips on the Bmw Serie 7, take a look at the Bmw Serie 7 category.