8
Chapter 2. Learning the basics
Using AC adapter and battery
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̈
Checking battery status
Yo
u
ca
n
de
t
erm
in
e
t
he perce
nt
a
g
e of ba
tt
ery power rema
ining
by check
ing
t
he ba
tt
ery
i
co
n
in
t
he
n
o
ti
f
i
ca
ti
o
n
area.
̈
Charging the battery
Whe
n
yo
u
f
in
d
t
ha
t
t
he ba
tt
ery power
i
s low, yo
u
n
eed
t
o char
g
e
t
he ba
tt
ery
or replace
it
w
it
h a f
u
lly char
g
ed o
n
e.
Yo
u
n
eed
t
o char
g
e
t
he ba
tt
ery
in
a
n
y of
t
he follow
ing
s
itu
a
ti
o
n
s:
• Whe
n
yo
u
p
u
rchase a
n
ew ba
tt
ery
• If
t
he ba
tt
ery s
t
a
tu
s
in
d
i
ca
t
or s
t
ar
t
s bl
in
k
ing
• If
t
he ba
tt
ery has
n
o
t
bee
n
u
sed for a lo
ng
ti
me
̈
Removing the battery pack
If yo
u
are
n
o
t
g
o
ing
t
o
u
se
t
he comp
ut
er for a
n
ex
t
e
n
ded per
i
od of
ti
me, or
i
f
yo
u
n
eed
t
o se
n
d yo
u
r comp
ut
er
t
o Le
n
ovo for serv
i
ce, e
t
c. remove
t
he
ba
tt
ery pack from
t
he comp
ut
er. Before remov
ing
t
he ba
tt
ery pack, make
s
u
re
t
he comp
ut
er has bee
n
sh
ut
dow
n
.
Note:
As each comp
ut
er
u
ser has d
i
ffere
nt
hab
it
s a
n
d
n
eeds,
it
i
s d
i
ff
i
c
u
l
t
t
o pred
i
c
t
how
lo
ng
a ba
tt
ery char
g
e w
i
ll las
t
. There are
t
wo ma
in
fac
t
ors:
• The amo
unt
of e
n
er
g
y s
t
ored
in
t
he ba
tt
ery whe
n
yo
u
comme
n
ce work.
• The way yo
u
u
se yo
u
r comp
ut
er: for example, how of
t
e
n
yo
u
access
t
he hard d
i
sk
dr
i
ve a
n
d how br
ig
h
t
yo
u
make
t
he comp
ut
er d
i
splay.
Note:
•
Yo
u
are adv
i
sed
t
o
in
ser
t
t
he ba
tt
ery pack whe
n
u
s
ing
yo
u
r comp
ut
er
t
o preve
nt
small
par
ti
cles from e
nt
er
ing
t
he
in
s
i
de of yo
u
r comp
ut
er.
•
To
in
crease
t
he l
i
fe of
t
he ba
tt
ery pack,
t
he comp
ut
er does
n
o
t
s
t
ar
t
rechar
ging
t
he
ba
tt
ery
i
mmed
i
a
t
ely af
t
er
it
drops from f
u
lly char
g
ed.
•
Char
g
e
t
he ba
tt
ery a
t
a
t
empera
tu
re be
t
wee
n
50 °F a
n
d 86 °F (10 °C-30 °C).
•
F
u
ll char
g
e or d
i
schar
g
e
i
s
n
o
t
req
ui
red.
