With the alternator or with an external charger.
Need to charge a new car battery.
There are two ways to charge a car battery.
Gather the correct materials before you get started you will need the following materials.
Baking soda car charger distilled water if necessary extension cord if necessary gloves moist cloth or sandpaper pad if necessary safety glasses goggles or face shield.
Typically a car battery charger that charges at about 2 amps will require about 24 hours to deliver the full 48 amps your battery needs for a full charge.
You need to find a type of battery charger that is designed to charge a completely dead battery.
When a battery dies then an external charger is the best way to charge it back up.
First find your vehicle s battery and locate the positive and negative terminals.
The positive terminal is marked with a and the negative terminal.
How to charge a car battery.
You can get around this by hooking a car with a working battery up to the dead battery with jumper.
Under normal circumstances the alternator charges the battery whenever the engine is running.
For the benefit of those who are unaware when a car battery is first made it does not need to be charged.