Charging a car battery
How do I charge my car battery with a battery charger? Which car charger should I use? How to light the battery? These are questions that absolutely any car owner is asked when using a car on a regular basis. Initially, it is worth noting that charging the car battery is very simple. It is only important to pay attention to detail and accuracy. It makes no sense to charge a car battery if it and the car as a whole have become just a pile of metal. In this case, it is necessary to ask for help: https://scrap4cash.com.
Checking the battery charge
During the period of car use, the capacity of the battery decreases due to many factors. The main ones are:
Evaporation of acid;
Poor quality of the reagent;
Sulfation of lead electrodes.
Decreased capacity leads to frequent recharging of the battery and shortened battery life. There are several methods to check the charge of a car battery:
Look at the indicator on the case if this light is present. A green light on the indicator will indicate a normal charge and the amount of reagent, a white light will notify you of the need to charge the car battery, and a red light to the need to urgently charge the battery and refill the reagent;
Use a multimeter. It is important to turn off the engine, set the multimeter to voltmeter mode and bring it to the battery terminals. The numbers on the meter will speak for themselves: 12.6 volts – 100% battery charge, 12.4 volts – 75%, 12.1 volts – 50%, and if the battery is dead, the instrument will show 11.7 volts;
Use a load coil/fork. This is a diagnostic device to which a voltmeter is attached. It is then connected to the battery to measure the readings.
The charge should be measured no sooner than 8 hours after removing the battery from the car or completely disconnecting it from the vehicle’s systems.
Charging a car battery with a battery charger
There are several ways to charge a car battery. The easiest is to charge the battery with a battery charger. You need to connect the charger leads to the battery terminals, without breaking the rule: the plus connect to the plus and the minus connect to the minus. Very often during production the positive terminal (+) is painted red and the negative terminal (-) is painted black. It is worth noting that improper connection of the charger may not lead to charging, but to additional discharging of the existing charge.
There are only 2 methods of charging a car battery: without removing the battery and with removing the battery. Charging without removing the battery is proven to be more effective, but requires attention and several steps:
Charge the car battery with a current that is only 10% of the capacity of the battery. In other words, if the capacity is 90 A/h, then the electric current should be 9 A. It is important to wait for a voltage of approximately 14.2 volts.
After reaching a voltage of 14.2 volts, you must reduce the current by exactly half. In our case, the current should be no more than 4-5 A. After about 10 hours, the car battery will be 100% charged by the battery charger without removing the battery.
Charging with the removal of the battery is possible only at 80%, but this will be quite enough for a comfortable and safe driving for a long period of time. It is sufficient to wire the charger to the engine and set the voltage to 14.4V. In about 12 hours the battery will be 80% charged.
It is worth noting that in order to start the car, it is enough to charge the battery for 15 minutes. For a full charge it will be necessary to drive around without turning on additional devices in the form of the furnace, air conditioner, seat heating, etc.
Emergency car battery charging in winter
Charge the engine battery in the winter can also be several methods: with the removal of the battery and without removing it.
In the first case it will be enough to take the battery home or to a warm room for 30 minutes, and then connect it to the charger.
In the second case, you can douse the battery with a little warm water while keeping the engine terminals dry. You can then plug in the charger and charge the battery. It is important to do this quickly and not very long in time. It will be enough for 15-20 minutes of charging in order to start the car.
Cigarette lightering the battery from another battery
Often drivers on the roads use the method exactly of cigarette lightering the engine from another engine of the car. Here, it is very important to adhere to the following scheme:
It is important to connect the wire to the plus on the working battery first and only then connect the wire to the plus on the dead battery;
When connecting the second wire, it is necessary to act exactly in the opposite way. First connect the wire to the minus of the dead battery, and then connect the wire to the minus of the charged battery.