How To Fix Loose Car Battery Connection. Checking battery leads and connections. How to Tighten a Car Battery Terminal Step 1 - Check Placement and Coverage.

Mine is now very tight once again. The piece of sheet metal you are using is probably aluminum. Check out My Amazon Auto Accessories Store.
Turn the bolt clockwise with the wrench to tighten.
You should get something in the neighborhood of 126 volts. Insert a piece of metal from a Coke can. You can tighten a loose battery cable in most cars by using a Phillips screwdriver or a socket designed to fit on the bolt at the battery terminal connection. How to Tighten a Car Battery Terminal Step 1 - Check Placement and Coverage.

