Minelab is an ISO9001 company. Everything is tested and tracked including in-field failures, because if they want to maintain that certification they have to. They make their real money selling de-mining equipment to governments & NGO organizations. Those entities demand ISO certification & compliance to even enter a bid. Therefore, for Minelab to risk losing that side of their business by not paying attention to the hobby side quality would be foolish.
Early on there was an issue with the battery housing & contacts on the X-Terras. Since then there have been some similar problems with detectors from another manufacturer. That other manufacturer(non-ISO) chose to band-aid the problem by putting in more foam padding(which will deteriorate over time). Minelab ended up re-designing the battery compartment, which involved new 4 cavity injection molds etc. Which company did the right thing and took the correct path? And by the way those "other" detectors are higher priced with more margin, yet they chose to foam it.
Are they perfect as a complex organization? Far from it! But pose this question to the so called experts on that other forum; "Which other company making hobby detectors has the technology, manufacturing capability, and just plain old nads to make de-mining equipment? Bounty Hunter, Fisher, Garrett, Teknetics, Tesoro, Whites?
I've yet to see pictures of anyone clearing minefields with a Bounty Hunter in their hand.
If you have a problem with your detector then call them, ask them how they are going to handle it. If you don't like the answer, ask to move up the food chain. If you still don't like the answer, contact the mother ship in Oz land. So far I've not heard much about any issues getting that far.
Oh yea, the 6 week thing is just pure silly, it's how many hours, vibration, heat etc that expose failures.
First thing I would do is to go get a different brand alkaline battery and try them. I would not be surprised that a lot of counterfeit batteries are being imported and distributed.
HH
BarnacleBill