car with the engine running "live", and if the engine is not running, it's just a piece of metal.Work gasoline engine depends on the battery or batteries.It becomes especially clear in the winter when the frost below -20 ° C.So far not idle is the question of how to charge a car battery.
It is clear that it is better to discharge the battery not to bring, but stuff happens.If the terminal voltage drops below 10.5 volts, the battery charge is vital.We must remember that at a deep discharge occurs sulfation plates - and the battery fails.Of course, when one of its service charge not do ,.It is necessary to check the density of the electrolyte, but the article we are talking only about how to charge a car battery.
Make it possible from the DC voltage source, and a 12-volt battery voltage from the power it takes about 16,5V.Of course, it is best to use a special device, the more that they are now laying special algorithms, significantly increasing the efficiency of the entire process.But in the absence of such a device can be applied to any source of voltage with the appropriate specifications and regulations, or to collect the relevant scheme.There are several different ways to charge the car battery.
One of them, the most common - charging DC.In this case, charge the battery using a current of 0.1 nameplate capacity battery.If its capacity is 55Ach, current must be 5,5a.If the battery capacity is 90Ach, current is 9A.
How much should I charge a car battery?And it is simply defined.Battery capacity must be divided by the value of the charging current.That will have the necessary time.If the battery capacity is 90Ach and current is 9A, the charging time is 10 hours.To the best DC charging should take into account several nuances.For example, it is necessary to control the voltage, ensuring its permanence.And if there is no automatic voltage regulation, it must be done manually.
During the work necessary to monitor the battery voltage.When it becomes equal to 14.4V, then you need to halve the charging current.This is due to the fact that during the charging the electrolyte is heated, begins to separate gas - and a loss of energy and heating of the battery.To avoid this effect, and use this technique.When the battery voltage reaches 14.4V, the battery is partially charged and a further charge of its large current is no longer needed.Therefore, the need to decrease the current.
Charging current is conducted in such a half, until the voltage at the battery will not remain constant for two hours.Then, it is believed that it was possible to fully charge the battery of the car, and work stopped.
That looks like this pattern of charging the battery of the car.Of course, it describes the easiest and most common option.There are other ways of charging.Thus, it is possible to carry out a forced battery charging, but it is necessary to use a current up to 0.7 times the battery capacity.And if you spend such a charge in terms of using household electrical outlet, then it is likely not survive.And then the fire could occur.
There is a way of charging at a constant voltage, but also here in the first minute of operation can be current exceeds the capacity of a household power.Therefore, battery charging will be safer to just use the method described above, or even better - to use a special device.It supports all modes automatically, and engaged in more sophisticated and efficient algorithms for charging.
condition of the battery must be constantly monitored and if too low to take timely action.How to charge the car battery, discussed above, describes the modes of charging methods of control and duration of the process.
