Keep in mind every time a standard vehicle battery loses its charge it damages the battery itself. If a battery has been charged for a few hours and reads below 12-Volts DC, it is not holding a charge and needs to be replaced. The battery DC voltage can be checked with a multi-meter. How To Tell If The Battery Is Good or BadĪ good car battery will hold a charge above 12-Volts DC. Using a slow trickle charge overnight is often the best method. Most dead batteries can be fully charged in 2-5 hours. In today’s world of quick computers, most want to charge a battery as quickly, but it is not reasonable to think this way about a car or truck 12-Volt battery. It is always best, when possible, to let a battery charge slowly since it is a chemical process that holds the charge. How long it takes to charge the battery will depend on how dead it is and how many amps the charger can put out. How Long Does It Take To Charge a Car battery? Next, Turn the battery charger on and the battery will begin to charge.Connect the Black cable to the Negative battery terminal.With the battery charger off, connect the Red cable to the Positive battery terminal.Step By Step How To Use a Car Battery Charger With Pictures Never let the two cables touch, as they will have a charge when the battery charger is turned on.The Black cable goes to the Negative battery terminal.The Red Cable goes to the Positive battery terminal.While they make look different, the following things are always the same. Things To Know About Charging a BatteryĮvery battery charger has a different style and buttons to charge a battery. This is an easy task to do that almost any DIY person can readily get done. There are times when a vehicle battery has lost its charge and needs a battery charger to get it back to a charged state.
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