Question: how much time required to charge a car battery?
Answer: Normally, a deep cycle battery often holds 48 amps so if you charge it at 1 amp, it will take you 48 hours. Similarly, if you charge your car battery at 4 amps, the total time to make the battery fully charged is about 12 hours. Therefore, if you need a quick charger, a 4 amp charger is not a good option for you.