Need battery terminals please...

I don't know if this is the right place to ask. Apologise if it's not. I'm wondering if anybody knows where I can buy battery terminals for this unit (generics are fine if they'll fit). They are corroded badly but there's no other visible damage. I'm repairing it for my daughter's school. I appreciate any help and thanks for viewing.

Thank you both for your prompt responses. I tried cleaning the terminals first and they were really bad. The wires look ok. There was ample room for me trim and expose a fresh copper strand. Sorry if my pics don't post. I'm brand new here, super green. Thanks again.