Your validity is depends on 8+18% per day for super family.. So 8rs+18% × number of days = total balance you have in your a/c.. So if you have around 20rs balance in your a/c, you will get upto 2 days validity & so on, similarly if you have 283 rs balance in you a/c you will get 30 days validity..as long as you have balance in your a/c 8rs+18% or more you will get validity irrespective of how you recharge your a/c..