Energizer PP355 - Manual (Page 14)

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ENERGIZER BATTERY MANUFACTURING
VERSION 1.2
Figure 12: Air Management Design Concept
3.3 ‐‐ Battery Compartment
The design of a Zinc Air Prismatic battery compartment depends on several factors including battery
dimensions, battery orientation, and air flow needed to maintain power to the device. Other
considerations are the ease of battery insertion and removal, contact materials, reversal protection, and
the shape and location of device contacts. In general, consumers should be able to use and replace Zinc
Air Prismatic batteries in a similar fashion to AA and AAA replaceable batteries with no additional
actions required other than removing the tab from the Zinc Air Prismatic battery prior to use.
Energizer Zinc Air Prismatic batteries are electrically conductive on all surfaces, and flat battery contacts
are recommended. Leaf spring contacts are preferred over coil springs as coil springs are more prone to
shorting. Positive contact should be made at the positive (+) can sidewall rather than on the air hole
side of the battery to prevent unwanted air flow restrictions to the air holes. Negative contact should
be centered on the negative (‐) cup bottom (non air hole side of battery) in such a way as to minimize
potential shorting between the negative cup and the positive can sidewall. Figure 13 illustrates the
recommended contact surfaces for Zinc Air Prismatic batteries.
Figure 13: Zinc Air Prismatic Polarity
Contact surfaces area should be maximized to reduce contact resistance. Sufficient contact pressure
should also be maintained to ensure consistent electrical connection but not so great as to deform the
battery contacts. A contact force in the range of one half to two pounds is recommended.