Good advice!!!From memory the Micra battery you need is an import one with the smaller terminals (assuming you have the original JDM terminals), Halfords code 054, but they should have a chart so you can double check
A better option would be to change the clamps on your car to accommodate normal batteries and then get the biggest capacity one you can physically fit
Everyone seems to obsess about the small terminal size, then find out the batteries that fit the small terminals are shite or pay a fortune for a small terminalled high cranking amps battery.
Change the terminals to parger ones and buy a good high cranking amp batt many to choose from then, for a decent price