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NiMH Battery Question

R

ron_c

Member
I read on line today about testing of NiMH batteries. The article was about 5 years old or so. Can't find the article again, but according to the tester when used with a couple of different brands of detectors, that a clad dime was detected about 1" deeper and slightly deeper with a silver dime compared to alkaline batteries. This doesn't sound right. Anyone heard of this test or know anything about this?
 
Finally found the link for the NiMH battery test.

http://www.thomas-distributing.com/techfacts2.htm
 
I'm a bit dubious about the claim as most detectors have a voltage regulator than maintains a constant voltage until the batteries fall below a designed in limit. However, it would be easy enough to do one's own test by substituting a batch of NIMH batteries for the Alkaline s My two bits.
BB.
 
Plus BarberBill is right - modern detectors have regulated power supplies and so the batteries don't matter as long as they are above the floor that the voltage regulator can handle.

Plus NiCads are obsolete - can you even buy them any longer? anyway NiMH are superior to NiCads in lots of ways so they are the recharables of choice right now.
 
Unless the detector is designed for their use, you may experience a drop in performance. NiMH is lower voltage than an alkaline in the same battery size package, ie. 9v Alkaline - 8.4v NiMH.
 
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