I giggle the battery cables on the car the power is fine until I try starting it

Hello, You either have corrosion on the battery terminals, bad battery cables, or a lose connection at one end of one or both battery cables. Isolate the issue by cleaning the battery terminals and battery posts, reconnecting the battery, and, if the problem persists, move one cable at a time to see which one allows power to flow to the vehicle. The one that allows power to be regained should be inspected, tightened or replaced.