This happens to be the brand that Walmart pushes and it's probably one of my favorite places to visit. It is also possible to get bad batteries right out of the package. This has happened to me a couple of times and it will leave you scratching you head for a few hours and preparing to cash in on that five year warranty. Most high quality alkaline batteries have an expiration date on the package and it makes sense to check it out before buying them. They might work great in a smoke detector that draws almost no current, but we want batteries that are going to put out some work.
Lets change the subject for awhile and talk about mineralization.
There are about a bazillion minerals out there that will drive a metal detector to the brink. Iron in the soil is the most common culprit here in the midwest. Iron , after all, is the bane of metal detecting in general. Ever since the beginning of the iron age of human existence, man has left it laying around to be buried and later found by us. Sometimes in such concentrations that it makes it impossible for us to metal detect through it.