The 3.3 kW and 7.2 kW figures in the Tata Punch EV refer to the power rating of the AC wall-box charger, not the battery size. A 7.2 kW charger can top up the car much faster than a 3.3 kW charger, so it is more useful if you drive a lot and want quicker overnight charging. Punch EV brochure of Tata
