Nissan Repair Questions? Ask a Mechanic for Answers ASAP
The best place to go for a new battery would be your local Nissan Dealer. They can most certainly supply and fit the correct part for your vehicle.
If you need a mobile service then you can either contact Halfords and see if they can source the correct battery for you or try someone like Kwik Fit who also provide a Mobile Service. You can find them here: Kwik FIt.
No problem at all. If they can't help then I can see if there is anyone else local to you who may be prepared to help you. Try them first and if no joy let me have your post code and I will have a look around for you.