White’s Electronics Sierra Madre - Manual (Page 5)

5
Batteries
Non-rechargeable batteries will start to drop in
voltage as soon as they are put into use and then
steadily diminish in voltage till they die. The Nicad
rechargeable battery pack, however, will diminish
very slowly (plateau) in somewhat of a flat line and
then drop like a rock.
Headphone use prolongs all battery life.
Battery life will vary a great deal with temperature,
number of target signals, battery type, brand, and
shelf life.
Rechargeable Battery (Opt.)
A rechargeable battery system is not standard equip-
ment, however, high quality systems are available.
White's rechargeable battery #802-5211, and char-
ger #509-0022 are recommended and offer quick
charge and overnight charge options.
Rechargeable batteries deliver fairly constant volt-
age until they're nearly dead. If you use them until
they are dead, they will deteriorate more quickly
than if you only use them until their voltage starts
to drop significantly. Rechargeables should be taken
out of service and recharged as soon as you notice
battery check to the left of the Batt Good range
on the meter upon turning Tuner ON. Rechargeable
batteries will not provide the same amount of con-
tinuous use as a new set of Alkaline batteries.
CAUTIO
N
Battery #802-521
1
13 12 11.5 11 10.5 10 9.5 9 8.5 8 7.5 7 6.5 6
5
4.5
4
3
2.5
2
1.5
1
0.5
0
3.5
Any voltage reading
less than 8 volts-
charge for 5 hours
maximum on
Quick Charge
setting. Further
charging can
damage the
system.
Do not charge until
voltage reading drops
below 10.5 volts.
Charging
Hours
Using the Battery Charger on Quick Charge Setting
Battery Voltage Reading