Elecraft KX3 Assembly Manual - Manual (Page 38)

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Figure 54. Connecting the Flex and Battery Cables.
If you wish to install the internal battery, you may do so now. When installing the battery always inspect
the sheath around each cell for damage. The sheath provides critical insulation to avoid short circuits. Many
cells, especially single-use (not rechargeable) alkaline cells, have the entire cell casing connected to the positive
terminal which is separated from the negative terminal at the bottom end of the cell by a thin insulator (see
Figure 55). If the plastic sheath is damaged, the bottom spring contact in the battery holder can bridge the
insulation, shorting the cell. The resulting heat can do extensive damage to the KX3. Damage to the sheath
along the sides of the cells can also cause short circuits by touching the metal shield on the battery retainer.
Refer to your owner’s manual for more information about recommended battery types and battery care.
Figure 55. Checking Battery Cells.