Battery Life Guidelines - mcmurdo R2 GMDSS Owner's Manual

3.5 Battery Life Guidelines

• New batteries should be fully (trickle) charged
and fully discharged several times to acheive full
capacity.
To a large extent, the battery life will depend on the
usage, or Duty Cycle of the radio - i.e the battery
will be drained much quicker if the radio is trans-
mitting continually than if it is just receiving.
Additionally, if the radio is set to High Power (5
watts*), the power drain will be considerably
greater than if transmitting on Low Power (1 watt*)
* Standard power settings.
BATTERY PACK
850mAh NiCad
Ai Based on -
Aii Based on -
B Based on -
Charge Held While Stored
The Following Data is Approximate:
Battery Pack
850mAh NiCad
Values predicted from calculation -
Typical Life of fully charged pack at 25°C
Duty Cycle Ai
6.8 hrs
5% Transmit at 5 Watts setting of r.f. output power (1.4 Amp)
5% Receive at 200mWatts Audio (0.15Amps)
90% Receiver squelched (0.02Amps)
5% Transmit at 1Watt setting of r.f output power (0.8Amp)
5% Receive at 200mWatts Audio (0.15Amps)
90% Receiver squelched (0.02Amps)
10% Transmit at 5Watt setting of r.f. output power (1.4 Amp)
10% Receiver at 250mWatts Audio (0.15Amps)
80% Receiver squelched (0.02Amps)
Up to 50% Charge
Duty Cycle Aii
8.14 hrs
Duration
At 25 ºC
4-6 Months
Duty Cycle B
3.89 hrs
At 45ºC
4 Weeks
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