A battery terminal connector assembly for attaching to a terminal post of a battery includes a biasing portion and a post engagement portion. The biasing portion has a first terminal post receiving opening. A biasing wall extends about a circumference of the first terminal post receiving opening. The post engagement portion has a second terminal post receiving opening for receiving the battery terminal post therein. Engagement walls extend about a circumference of the second terminal post receiving opening. The biasing portion is movable relative to the post engagement portion between a first insertion position and a second termination position. As the biasing portion is moved from the first insertion position to the second termination position, the biasing wall engages the engagement walls and moves the engagement walls into mechanical and electrical engagement with the battery terminal post positioned in the second terminal receiving opening of the post engagement portion.