Sorry, I don't remember what size it is. I purchased a set of terminals and a crimper that I'll link. Also, I soldered the terminal after crimping and gave it several coats of liquid electrical tape to try to prevent future corrosion.

https://www.amazon.com/gp/product/B07LBQYGK6/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1

https://www.amazon.com/gp/product/B07PB3DH6D/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1