Track pad replacement parts and tools

Hello, I managed to spider crack my track pad and would like to replace it. It has been clicking for a while but otherwise works fine after I changed the track pad cable. If I were to replace the track pad, cable, and battery what are all the parts and tools I would need? Do I need to replace the battery? - I heard I do if it comes out. If so will the full battery replacement kit have everything I need as far as tools to replace the track pad and cable as well? Or if my track pad works should I just not bother? My battery life is ok for 10 years old I think, any input is appreciated, Thanks for your time.