User's Manual

Charging and caring for batteries 135
DRAFT 2
ing the battery contacts can heat up the conduc-
tive material.
Attaching of labels
Warning Do not obstruct the vent hole on the battery
or the vent hole on the radio chassis label. If the vent
on the battery is obstructed the battery may explode,
causing personal injury and/ or damage to property. If
the vent on the radio is obstructed, audio quality and/
or key function may deteriorate and radio seals may
be damaged.
For detailed information about attaching labels safely,
see "Attaching labels to the radio or battery" on
page 28.
Charging temperatures
Notice Do not expose a battery to very high or very
low temperatures for extended periods of time. Doing
so will shorten the usable life (‘service life’) of the
battery.
To achieve the best results when charging your
battery:
■ Before you begin to charge your battery, make
sure that the battery temperature is close to the
room temperature in which the battery is to be
charged.
■ If possible, charge the battery in
temperatures between 50 °F and
77 °F (between 10 °C and 25 °C).
This temperature range is the opti-
mal charging range.
Charging only starts when the battery is
between 32 °F to 104 °F (0 °C to 40 °C).
77 °F
25 °C
50 °F
10 °C