sounds very much like a false moisture alarm. there may be a conductive residue the contacts, you might try cleaning them - if you have it available something like some isopropyl alcohol, clean the contacts off with it and let them dry thoroughly. The alcohol should displace any residual moisture or conductive deposits. If you have a multimeter, check the voltage of the various batteries you have tried. A new one should be around 3.6V if memory serves me correctly.   If it keeps it up send it