All the info you need is present here --
Nine-volt battery - Wikipedia, the free encyclopedia
Usually it is avaialble in local stores for 15rs, brand I don't remember but it is blue and white in colour...
One battery runs quite long gives you at least 5 -6 hours of driving.... So you can use disposable batteries...
For AA you all must be aware of what you need to do .. Go for Eneloop
Nine-volt battery - Wikipedia, the free encyclopedia
Usually it is avaialble in local stores for 15rs, brand I don't remember but it is blue and white in colour...
One battery runs quite long gives you at least 5 -6 hours of driving.... So you can use disposable batteries...
For AA you all must be aware of what you need to do .. Go for Eneloop