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Primary lithium cells with low magnetism |
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Custom design and manufacture of state-of-the-art battery packs,
battery chargers, UPS, and power supplies for OEMs in a Hurry
Introduction:
Occasionally
there is a need for batteries that are non-magnetic. Our research into this area has turned up the lithium metal manganese
dioxide cells as a possibility. There is some paramagetism in the manganese dioxide, since it has 3 unpaired electrons, but the
main source of ferromagnetism is the case. These cells use non-magnetic stainless steel due to the chemical properties of the
steel. However, non-magnetic stainless is only non-magnetic if it is properly annealed. When the annealed steel sheet is drawn
to form the case the crystal structure is disrupted and it becomes slightly ferromagnetic.
This means that our CR
series cells have far less ferromagnetism than other steel-cased cells, but it also means that if you have a strong enough
magnet they will be attracted to it. These pseudo-non-magnetic cells have been found useful in many areas, but they are not
good enough for others.
The key is in testing the battery in your application, not necessarily testing them with a
Nd-B magnet.
For low-magnetic coin cells click here 
For low-magnetic cylindrical cells click here
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PowerStream Technologies: 1163 S. 1680 West. Orem Utah
84058
Phone: 801-764-9060  Fax: 801-764-9061 |
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© Copyright 2000, 2002, 2003, 2004, 2005, 2008, 2010 Lund Instrument
Engineering, Inc. All rights reserved |
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