Recharge Car Battery

Although charging a car battery while still connected or in situ is possible it s always a good idea to disconnect the battery before charging after a quick clean. Feel free to call our experienced mechanics for a consultation about the best chargers for your needs or to recharge your battery for your without any hassle. Charging a car battery is usually simple but there may be times when you don t have access to the necessary materials or don t feel comfortable attempting to recharge it on your own.

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In order to charge a dead car battery a set of jumper cables and a functional car with a charged battery is required.

Recharge car battery. From this step by step guide you can confidently charge your car battery both safely and efficiently. Many battery chargers deliver two to six amps some allow you to choose the amperage level and will take at least several hours to recharge a dead car battery. Remember you should never charge leaking or damaged car batteries. In the case of a battery in good condition the rate of charge may be around 3 to 6 amps with a normal home charger.

Car battery chargers run off ac power and provide 12v dc at relatively low voltages which is the best way to charge a completely dead battery. You will then have the ability to connect the batteries to one another using the jumper cables and recharge the dead battery by transferring energy from the functional battery. Always disconnect the negative usually black lead first and reconnect it last otherwise you could end up getting a nasty shock when you touch the positive terminal. A basic home battery charger incorporates a transformer and rectifier to change the mains 110 220 volt alternating current to 12 volt direct current and allows the mains supply to provide a charging current at a rate determined by the state of the battery.

A healthy battery will show 12 4 to 12 7 volts across both terminals when measured with a voltmeter a simple device that s very handy when diagnosing battery issues. Most of the time you will be able to charge the battery without taking it out of the car but if reaching the battery or fitting the charging cables in the engine bay or trunk where the battery is located proves difficult remove the battery from the car completely while you charge it. When you recharge a dead car battery it s very helpful to know just how dead it is before you decide how you re going to deal with it. Providing the battery is not excessively past its expected life cycle with the right equipment charging a car battery is not difficult.

Charging a dead battery with an excessively high voltage can increase the off gassing of hydrogen which can in turn result in a hazardous situation where the battery might explode.