JW Detector Downunder

Pardon me as new to this forum (Just Joined) I wonder why one would need this battery Pack? The rechargeable batteries with the 540 last for Yonks as do Alkaline Batteries also. How much extra weight does this battery pack add to the weight of the 540? Not to mention the cost? I imagine it is not super cheap? How easy is it to carry a spare set of AAs in ones bag? or pocket? 2 sets of batteries would last more than one day continuous detecting, I can't see the value of this none minelab? upgrade product, not to mention problems like what is happening to your unit. 4 AAs in the machine seems a much more logical and SAFER option to me maybe I am missing some point with this? cheers anyway and good luck with geeting the problem rectified. JW Detector Down Under. 🙂