Technical data

BATTERY PACK Typical life of fully charged pack at 25°C
Duty Cycle Ai Duty Cycle Aii Duty Cycle B
850mAh NiCad 9 hrs 12 hrs 5 hrs
1200mAh NimH 12 hrs 20 hrs 7 hrs
HT50/HT51/HT53 & Axis 50 GMDSS
18
E03766 Issue 3.0
3.6 Battery life guidelines
New batteries should be fully (trickle) charged and fully dis-
charged several times to achieve full capacity.
To a large extent, the battery life will depend on the usage, or
Duty Cycle, of the radio (Tables 2 and 3), i.e. the battery will
be drained much quicker if the radio is transmitting 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
Ai Based on - 5% Transmit at 5 Watt setting of r.f. output power (1.4 Amp)
5% Receive at 200 mWatts Audio (0.15Amp)
90% Receiver squelched (0.02 Amp)
Aii Based on - 5% Transmit at 1 Watt setting of r.f. output power (0.8 Amp)
5% Receive at 200 mWatts Audio (0.15Amp)
90% Receiver squelched (0.02 Amp)
B Based on - 10% Transmit at 5 Watts setting of r.f. output power (1.4 Amp)
10% Receiver at 250 mWatts Audio (0.15 Amp)
80% Receiver squelched (0.02 Amp)
Table 2 - Battery life values predicted from calculation:
Table 3 - Battery charge held while stored
The following data is approximate:
BATTERY PACK Duration
At 25°C At 45°C
850mAh NiCad Up to 50% charge 4–6 months 4 weeks
1200mAh NimH Up to 50% charge 4 months 4 weeks