Motorola HS801 User Manual page 26

Additional Information
Use only Motorola original accessories. Use of non-original Motorola
accessories could be risky and the warranty is void should cause by using
non -Motorola orig inal accessories.
Do not expose your battery in an environment temperature above +55 C
(+131 F). If the battery is operated in cold temperatures, the battery capacity
is reduced.
Use your battery in room temperature for maximum battery capacity.
The battery can only be charged when the temperature is between +10 C
(+50 F) and +45 C (+113 F).
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