How Long Does Car Battery Charger Take. However you dont have to fully charge the battery in order to start the car. If the battery is fully empty then you just need to double these times to see the amount of time your charge will.
In fact a dead car battery takes from 4 to 24 hours to reach a full charge. Normally 4 amps is the common rate for car battery chargers. Again I encourage you to watch the video above this answer will make more sense.
In actuality the number is a little bit less and all battery chargers will be about 80 efficient plus or minus due to a myriad of factors.
Answer 1 of 7. Lets apply the formula using two more examples below. The most common rate for car battery chargers is around 4 amps. How much does it cost to charge a hybrid car.
