•
It
is
necessary
to
charge
the
battery
before
its
use.
Always
use
the
charger
and
read
the
manufacturer
instructions
or
the
manual
of
the
device
for
the
instructions
regarding
charging.
•
Do
not
leave
a
battery
charged
when
it’s
not
going
to
be
used.
•
After
long
periods
of
storage,
it
may
be
necessary
to
charge
and
discharge
the
battery
several
times
in
order
to
achieve
maximum
performance.
•
Always
keep
the
original
documentation
of
the
device,
you
might
need
it
later
for
future
reference.
•
If
it’s
possible,
take
out
the
battery
of
the
device
when
it’s
not
used.
•
Do
not
store
your
device
in
extremely
hot
or
cold
places
like
inside
of
a
car
during
the
summer.
It
might
damage
the
device
and
cause
explosion
of
the
battery.
It’s
recommended
to
use
the
device
in
a
range
of
temperatures
between
5°C
and
35°C.
Prevention
of
hearing
loss
There
are
irreversible
risks
of
hearing
loss
if
the
receiver,
the
earphones,
the
loudspeaker
or
the
hands-free
kit
are
used
at
a
high
volume.
Adjust
the
volume
to
a
level
that
does
not
present
danger.
Over
time,
you
may
accustomed
to
using
a
higher
volume,
but
this
may
cause
damage
to
your
hearing.
If
you
hear
buzzing
or
muffled
speech,
stop
using
the
devices
and
consult
a
specialist.
The
higher
the
volume,
the
more
quickly
your
hearing
may
be
damaged.
Specialists
give
the
following
recommendations:
-
Minimize
high
volume
of
headphones,
the
speaker
or
handset.
-
Avoid
increasing
the
volume
to
cover
a
noisy
environment.
-
Decrease
the
volume
if
you
cannot
hear
people
speaking
near
you.
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