Charging the battery charger is for connecting the battery to the charger, the appropriate amount of time. Battery charging time depends on its capacity, its discharge and current rectifier and charging time. The best and safest charging you choose the appropriate power rectifier. You do not know how to charge a car battery? This calculator will help you achieve the best charging. To select the best time to load it would be a measure of the current check the current battery voltage. Measurement should be performed on not loaded (disconnected from the electrical system of the car) battery. The calculator calculates the car battery charging voltage of 12 V.
Enter the capacity of the battery, select the intensity of the charger (charger), battery voltage (if you know) and press the "Calculate"

Car battery capacity Ah
Car battery voltage (measured) UnknownAbove 12,4012.31-12.4012,21 – 12,3012,11 – 12,2012,01 – 12,1011,91 – 12,0011,81 – 11,9011,71 – 11,8011,00 – 11,70 V

Select amperage car charger (Marked with a green color is recommended amperage battery charger )

1A

1.5A

2A

2.5A

3A

3.5A

4A

4.5A

5A

5.5A

6A

6.5A

7A

7.5A

8A

8.5A

9A

9.5A

10A

10.5A

11A

11.5A

12A

12.5A

13A

13.5A

14A

14.5A

15A

15.5A

16A

16.5A

17A

17.5A

18A

18.5A

19A

19.5A

20A

20.5A

21A

21.5A

22A

22.5A

23A

23.5A

24A

24.5A

25A

25.5A

26A

26.5A

27A

27.5A

28A

28.5A

29A

29.5A

30A

30.5A

31A

31.5A

32A

32.5A

33A

33.5A

34A

34.5A

35A

35.5A

36A

36.5A

37A

37.5A

38A

38.5A

39A

39.5A

40A

40.5A

Car battery capacity	Car battery voltage (measured)	Selected amperage car charger	Charge time of a car battery
50 Ah	Unknown	5A	10 hour