Where To Buy The Battery - Motorola CDR500 Programming Manual

Battery Revert

Where to Buy the Battery?

A 70 A-h (0.1C) battery would provide the required
energy at room temperature environment.
3. Tcr = 20 hours
≈ ×
C 65
≈
C 74.7
A 75 A-h (0.05C) battery would provide the required
energy at room temperature environment.
Remember that the above calculations are approxi-
mate. Different discharge rates yield different "end of
discharge" cell voltages which were not taken into
account. The battery revert module is designed to dis-
connect the station from the battery if the input voltage
to the module drops below 11 V dc. When in doubt,
you can consult the manufacturer of the battery you
intend to use to obtain "project planning data" charts.
Or, you can "err" to the high side and add 10% to 25%
to the calculated number. If the battery is going to
experience extremes in temperature, the capacity will
7-4
0.1
 
20
----- -
 
5
6864110R66-O
CDR500 & CDR700 Repeater Service Manual
be affected. For cold climates, the capacity may need to
be doubled or tripled.
Where to Buy the Battery?
Most of the larger electronic supply houses will carry
or can obtain the type and capacity of battery required
for your application. You may be able to deal directly
with some of the battery manufacturers especially if
you need large quantities of the same model.
NOTE
This trickle charger is intended to main-
tain the battery for long periods of time
between power failures and is not
intended for charging a fully discharged
battery. If the battery is completely dis-
charged, it must be removed and charged
via a battery charger with higher current
capability.
March, 2001