Will a 18 volt batter charger, from harbour freight charge my 18 volt porter cable batterys as long as I have the + and - hooked up correct? Thks richard

It should. However, some chargers are only for LION and other Ni Cad, others both. Worth a try. Need another 18 Volt PC drill?

If your depending on the porter cable equiptment to function then consider getting that style of charger for it or check pawn shops for a used one.

Many Batteries and Chargers seem to have 3 Connections, Believe the third may be used to sense Heat. At least what it looks like when you change the Internal Batteries.