SECTION III - BATTERIES (INSTALLATION)
A.
GENERAL
Nine size ‘D’ regular flashlight cells connected in series for a nominal value of 12 Volts, supply
power to the SBX-11A. These cells are inserted in groups of three into plastic tubes which fit
into the battery box on the bottom of the set. The battery box unlatches from the set with two
pull down catches. Battery polarity is indicated on the inside of the box.
B. SELECTION
1.
When selecting a battery type the following points should be considered:
a. Type of use
b. Temperature of operation
c. Rechargeable or non-rechargeable
d. Battery
life
e. Availability
For example: if operation to -22 Deg.F. is required, a nickel cadmium battery will be needed.
The temperature range of the various battery types are:
Nickel Cadmium
-22 Deg.F. to 122 Deg.F. - -30 Deg.C. to 50 Deg.C.
Alkaline
14 Deg.F. to 122 Deg.F. - -10 Deg.C. to 50 Deg.C.
Zinc Carbon
32 Deg.F. to 122 Deg.F. - -0 Deg.C. to 50 Deg.C.
If the above is not a consideration then the choice may depend on whether rechargeable or non-
rechargeable types are desired. When selecting one of the rechargeable types, read the charging
instructions to ensure that proper recharging facilities are available.
The choice of the non-rechargeable type will depend on battery life desired and perhaps on
availability. Consult the battery table for more information.
Do NOT use Lithium or lead-acid cells in the battery holder. Their voltage is too high and the
internal fuse will blow.
