User's Guide

Table Of Contents
Charging is disabled below 32° F ( 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.
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Itron Mobile Radio User Guide Chapter 10 Battery Basics