How long does it take to charge modern car batteries?

So charging is a little different today than it was before he recharged the cars almost constantly. In defense of the car manufacturers, however, it must be said that the charging algorithm is quite intelligent and will never completely discharge the battery. But first, to what draws the most power from your battery: take off. A normal start of a warm petrol engine takes from the car battery proud about 120 A. With a warm engine it takes approx Energy 0.2-0.4Ah.

All of this is related to shorter life than modern car batterieseven in cars that have it turned off stop-start system. A fully charged car battery from an older vehicle has more reserve, for example for a frosty morning and a cold engine start. For example, a newer battery will be charged at 70-80%which puts him at a disadvantage.

How long does it take to charge a car battery while driving?

For previous cars, a few minutes, today about two hours by car. In cars manufactured about 15 years ago, the alternator was still charging, i.e. with a fixed setting with a voltage of 14.3-14.5 V. After the start, the energy was recharged, the car battery voltage was therefore kept at the full charge value. Current systems charge more intensely (even 15.8V), but very briefly, the accumulator therefore cycles constantlywhich accelerates wear. But overall it takes much longeruntil the battery is recharged to an acceptable level.

How long does it take to charge a car battery?

Once the car battery voltage is around 12.5V, a modern car it stops charging so hard. At the same time, 12.4V is already the level when it starts to form lead sulphate on the electrodes. The crown is usually engaged by the stop start system, which abuses the already insufficiently charged car battery he throws a load of energy at her at every intersection. So car batteries in the city it doesn’t load fully never, it takes a while to drive a few hours.

Charge the car battery with a charger

Insufficient charging of the car battery can be prevented with self-help. Only one battery once every 14 days to a month plug it into the charger and let it fully charge. Avoid the fast one battery wearsignificantly it will extend its life (maybe double). Especially the ones that are supposed to top up they mainly travel short routeson which the car battery cannot be recharged by the alternator.