Has any one had the occasion to use these batteries.
Panasonic Oxyride Extreme Power 4 Pack AA Batteries #ZR-6XA/4B-D ZR-6XA/4B-D
All new, higher powered, longer lasting batteries for the toughest tasks of all. Oxyride Extreme Power is the next generation of batteries, with two major breakthroughs in innovative new materials and advanced manufacturing technology. The battery uses newly developed oxyhydroxide, which releases a high voltage to the manganese dioxide typically used in alkaline batteries. Then a new vacuum pouring technology allows inserting a higher quantity of electrolyte in the battery. This added power gives you the best possible performance from your metal detector.
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I have read where they are 1.7 volts and a lot cheaper than Everready Lithiums that are only 1.5 volts.
and almost tripple the price depending on where you get them.