User's Guide

Charging and caring for batteries 55
Notice Turn the radio off before removing the battery,
and turn it on again after attaching the battery. This
ensures that the radio powers down and up correctly.
Failing to follow this procedure may require the radio
to be turned off then on again to operate correctly.
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 optimal charging
range.
Charging only starts when the battery is between
32 °F to 104 °F (0 °C to 40 °C).
When the battery temperature is outside the normal
charging range, the orange LED on the charger is lit.
Charging will start or resume once the temperature is
within normal limits, and no action is required by you.
Leaving the battery on charge
You can leave a battery/radio in the charger once
charging is complete. Leaving a battery in the charger
will not overcharge or damage it.
77 °F
25 °C
50 °F
10 °C