We have researched this for you, and here is what we found.
The first thing to do is to get a Diehard battery charger. Always try and understand the manufacturer's instructions.
You can now start recharging your vehicle's battery as soon as you find a good and safe location. Remove the key from the ignition and make sure the vehicle is totally turned off.
It is important that you check to see that the Diehard charger is in the right settings so that it can charge your battery.
When you have the Diehard battery charger on the appropriate setting, the next step is to get the battery ready for charging.
At the end of the battery cable, there should be a pair of clamps. These clamps are designed in such a way that they can be attached to the terminals of a car battery.
To charge your battery, you will be needing a grounded plug, also known as a three-prong plug, which will be inserted into a grounded outlet.
Maintain the connection between the battery and the charger until the battery has been fully charged or when the battery is able to start the engine.
When the battery has been fully charged to the point where the engine can be started, you can now disconnect the diehard charger because the alternator in the car will finish charging the battery on its own.