MT 1500 Model 1
39
Helpful Tips
Battery
Battery Life
Battery life is determined by several factors. Among the more critical
are the regular overcharge of batteries and the average depth of
discharge with each cycle. Typically, the greater the overcharge and
the deeper the average discharge, the fewer cycles a battery will last.
For example, a battery which is overcharged and discharges 100%
several times a day, will last fewer cycles than a battery that receives
less of an overcharge and is discharged to 50% per day. Further, a
battery which receives minimal overcharging and averages only 25%
discharge, will last even longer.
Charging the Battery
Motorola batteries are designed specifically to be used with a
Motorola charger and vice-versa. Charging in non-Motorola
equipment may lead to battery damage and void the battery warranty.
Motorola-authorized battery chargers may not charge batteries other
than the ones listed on page 45.
The battery should be at about 77°F (25°C) (room temperature),
whenever possible. Charging a cold battery (below 50° F [10°C]) may
result in leakage of electrolyte and ultimately in failure of the battery.
Charging a hot battery (above 95°F [35°C]) results in reduced
discharge capacity, affecting the performance of the radio. Motorola
rapid-rate battery chargers contain a temperature-sensing circuit to
ensure that batteries are charged within the temperature limits stated
above.
Battery Charge Status
Your radio can indicate your battery’s charge status by the following:
LED and Sounds
• you see the LED flash red when the PTT Button is pressed
indicating low battery
• you hear a low-battery “chirp” (short, high-pitched tone)
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