Duration of charging totally depends to OBC, car battery size and type of charger. Example:1 Battery- 30KWH/ OBC – 3.3KW /Type-2 Charger – 3.3KW Approx. time to charge = 9Hrs. (30KWH/3.3KW) Example:2 Battery- 30KWH/ CCS DC – 30KW (OBC bypassed in case of DC charging) Approx. time to charge (SOC 10% – 80%) = 50Mins.