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WHITES GMT Goldmaster information and questions
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<blockquote data-quote="Guest" data-source="post: 68228"><p>No they won't - you'll get spurious noises & other issues. Use as a minimum good quality alkaline batteries. I always used Duracell alkalines & got around the claimed 30-40hrs detecting time before they reached the 50% mark.</p><p>Lithium rechargeables might be ok but others will give similar poor results as poor quality or less than alkaline batteries.</p><p>Reasons:</p><p>Normal battery (heavy duty, general purpose etc.) 1.2v max output</p><p>Alkaline battery 1.5v max. output. Because the voltage of an alkaline battery drops at a very predictable rate: 1.5 volts - fully charged, 1.25 volts - 50% charged, 1.0 volts - at the end of its lifecycle. This is why you discard @ 50%. Still around 1.25v or slightly higher than the cheaper types even after nominal 30-40hrs detecting. </p><p>Rechargeable batteries are usually all 1.2v max. output</p><p>Lithium rechargeable batteries 1.5v max. output. </p><p></p><p>Basically with anything less than alkaline batteries you are starting off flat.</p><p>With 8 x alkalines you start at 12v & finish around 10v @ 50%</p><p>Cheapos you start at 9.6v</p></blockquote><p></p>
[QUOTE="Guest, post: 68228"] No they won't - you'll get spurious noises & other issues. Use as a minimum good quality alkaline batteries. I always used Duracell alkalines & got around the claimed 30-40hrs detecting time before they reached the 50% mark. Lithium rechargeables might be ok but others will give similar poor results as poor quality or less than alkaline batteries. Reasons: Normal battery (heavy duty, general purpose etc.) 1.2v max output Alkaline battery 1.5v max. output. Because the voltage of an alkaline battery drops at a very predictable rate: 1.5 volts - fully charged, 1.25 volts - 50% charged, 1.0 volts - at the end of its lifecycle. This is why you discard @ 50%. Still around 1.25v or slightly higher than the cheaper types even after nominal 30-40hrs detecting. Rechargeable batteries are usually all 1.2v max. output Lithium rechargeable batteries 1.5v max. output. Basically with anything less than alkaline batteries you are starting off flat. With 8 x alkalines you start at 12v & finish around 10v @ 50% Cheapos you start at 9.6v [/QUOTE]
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Metal Detectors
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WHITES GMT Goldmaster information and questions
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