Somebody who lives near my house has a small motor/air pump which when connected to battery pumps air in the tires. Comes in very handy in fact it came very very very handy to me twice. He said it costed him Rs.1200 and got it from Shershah. Just put nozzle on tire, connect wires to battery terminals and it starts pumping air.
Do you know any other cheaper electronic air pump/motor which is easily available in main city!?