Energizer PP355 - Manual (Page 15)

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ENERGIZER BATTERY MANUFACTURING
VERSION 1.2
Contact Materials:
Nickel plated stainless steel is recommended because it provides good conductivity and environmental
stability at a reasonable cost. Nickel plating must be adherent, continuous, and non‐porous. The nickel
plating must also resist the wear that occurs during the insertion and extraction of batteries. The
suggested plating thickness is 5‐6 micrometers.
Battery Orientation:
How the battery is situated in the compartment is an important design consideration. The location of
the air access path, plenum, and seal are determined by the facing of the battery air holes. The
orientation of the air hole side of the battery also influences the location of the electrical contacts.
Determining the facing of the battery air holes is generally a function of device use and the position of
the battery compartment within a device. Figure 14 presents an example of a device which orients a
Zinc Air Prismatic battery with the air holes facing the compartment door. The cover holds the battery
in place and does not restrict air flow to below what is required for device operation.
Figure 14: Battery Orientation and Device Contacts
Reversal Protection:
Battery reversal protection is recommended for battery operated devices to prevent against possible
damage to a device or battery if a battery is inserted incorrectly. Reversal protection can be mechanical
or electronic, depending on the device. An example of mechanical reversal protection is a design
feature in the battery compartment that only allows the battery to be inserted with the correct polarity.
This can be accomplished by including a raised lip or ridge that conforms to the battery contour when
inserted in the correct polarity. The recommended location of the rib for Energizer Zinc Air Prismatic
batteries is where the recessed edge around the non air hole side of the battery fits into the
compartment.
Battery Dimensions:
Similar to other battery systems, Zinc Air batteries can bulge slightly under normal discharge conditions
as zinc is converted to zinc oxide in the intended reactions. Energizer recommends designing devices
around standard industry dimensions where available. Typical dimensional specifications for Energizer
Zinc Air Prismatic batteries, including consideration for possible bulge, can be found on the respective
datasheets.