My detector specifically says not to use a Heavy Duty battery in it. It requires alkaline and I purchased a "Max" alkaline the other day. Will this be okay to use in it?
Yes sir. They will work just fine. I would recommend using high quality batteries when available though. Not only do they last longer as a rule, but they are much safer to leave in the detector. I never recall having had an Energizer or a Duracell start leaking, but have had it happen several times on the store brand stuff. Especially the 9 volts. Happy hunting my friend.