You'll find 16a to 6a adapters at most local electrical shops, it'll be fine to use for this since realistically you wouldn't be drawing more than 4 amps. Corsair has a habit of providing 16A/20A plugs with their power supplies in India. You could also just buy a replacement cable on Amazon but choose one that has atleast 4.5 stars since you'd want one that's not of questionable quality.