How To Use A Battery Charger On A Car. For the greatest safety keep the charger as far away from the battery as the cables allow. Then attach the negative charger clamp.

Its time for a new car battery. Decide whether you want to charge the battery slowly trickle charge or quickly. Recharge the booster as soon as you can so that if the situation springs up again it will be ready for action.
Disconnect the Battery Terminals.
Disconnect the Battery Terminals. 34 Cleaning the Terminals. Let the engine run for 10-15 minutes with all the accessories turned off before turning it back off. With this type of charger you dont need another car to help you recharge the battery.

