■
Charging is disabled below 32° F (0° C) and above 104° F (40° C) to protect the lithium-ion
batteries.
–
In cold weather, keep the portable IMR inside your outer clothing. A cold battery will not
last all day even with full charge.
–
In hot weather, keep the radio out of direct sunlight. A hot battery's capacity is degraded
over time and eventually the battery will not last all day even with a full charge.
–
If an IMR has been left in a hot vehicle (above 104° F, 40° C), allow the vehicle and the
IMR to cool down before powering the IMR on.
■
Shallow or partial discharge and charge cycles are preferred, rather than allowing the
battery pack to drain completely before recharging it.
■
Charging after a shallow or partial discharge does not degrade battery pack life or
performance.
■
The lithium-ion IMR battery is good for approximately 300 to 500 charge cycles, depending
on its usage, before it must be replaced.
01 September 2020 815-0410-00 41
Itron Mobile Radio User Guide Chapter 10 Battery Basics
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