Most older Japanese cars were fitted with JIS terminals. You must ensure that when you are buying a new battery that you know which terminals you have. One must also look at the orientation of and which side of the old battery the terminals are on.
Japanese Industrial Standard
The Japanese Industrial Standard test is carried out at -15°C. The automotive batteries are usually tested at either 150A or 300A with different 10s /30s voltage and durability requirement to 6V. For European applications we believe this does not give as clear a view to the customer of battery startability and is rarely shown and used within the European aftermarket.