SDS

Product Specification
Model No.: R03 Super Heavy Duty (PVC/Foil Jacket) Document No.: JYSO222
Revision: A0 Page 6 of 6
2008-12-05
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15. General guidance for appliance design
15.1 Clearly indicate the type of battery to use, the correct polarity alignment (+ and –) and directions for
insertion.
15.2 To overcome the problems associated with the reversed placement of a battery, consideration should be
given at the design stage to ensure that batteries cannot be installed incorrectly or, if so installed, will not make
electrical contact (see Figure 1).
a) Correct insertion b) Incorrect insertion
Figure 1 – Example of the design of a positive contact of an appliance
15.3 Electrical contact parts and extreme materials and shapes should be appropriate to enable them to
form and maintain effective electrical contact. Materials should be materials with strong conductivity, high
corrosion resistance, not easy oxidation and elasticity (such as nickel-plated stainless steel). Shapes and
styles should avoid causing short circuit of batteries (such as positive and negative spring shrapnel piercing
trademarks and causing positive and negative battery conduction, as shown in Figure 2). The negative end
of the battery cabin should have a bulge that can fully contact the negative electrode of the battery.
a) Spring slides underneath the jacket and
contacts the metal can b) Jacket is punctured
Figure 2 – Examples showing distorted spring
15.4 The battery compartment shall be designed to allow only batteries of specified size to fit into and form
contact.
15.5 Battery cabin design should try to avoid water to avoid battery and electrical contact rust; not easily opened
by children; the battery compartment shall be isolated from the heat generated by electrical appliances.
Positive
contact of an
appliance
The positive contacts
are recessed in the
surrounding insulator