Hi Bill !! !
I know you are an expert on battery science and also have experience with an Ace250 detector, therefore
I come to you with the following question :
First, I'll set up the question with a little background. Lately I've been wondering if a metal detector's
coil-signal strength is reduced as a result of declining battery voltage. So I re-read your Battery Clinic! -
Chapter 1 post of July 30, 2006, in the How to Use Your Metal Detector!
In this chapter you say that metal detector circuitry is designed to operate on millivolts ( 1/1000 V).
Question :! Notwithstanding that there are factors involved, such as matrix composition, target conductivity
and amount of exposed surface area available for eddy current production, etc., that will control the effective
signal depth, can I run the Ace250 until the batteries go completely dead, or nearly so, with the assurance that there has been no reduction in coil-signal strength and depth ? If the answer is NO, then at what point should I replace (or recharge) the batteries to maintain full signal strength and depth ?
Thanks much !